Installation, Operation, and Maintenance

Thermostats
Standard and Programmable Versions

SAFETY WARNING
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of
heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and training.
Improperly installed, adjusted or altered equipment by an unqualified person could result in death or serious injury.
When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that are
attached to the equipment.

April 2020 BAS-SVX36D-EN

Introduction
Warnings, Cautions, and Notices
Safety advisories appear throughout this manual as required. Your personal safety and the proper
operation of this machine depend upon the strict observance of these precautions.

The three types of advisories are defined as follows:

Indicates a potentially hazardous situation which, if not avoided, could result in

WARNING death or serious injury.
Indicates a potentially hazardous situation which, if not avoided, could result in
CAUTIONs minor or moderate injury. It could also be used to alert against unsafe practices.
Indicates a situation that could result in equipment or property-damage only
NOTICE accidents.

Copyright
This document and the information in it are the property of Trane, and may not be used or
reproduced in whole or in part without written permission. Trane reserves the right to revise this
publication at any time, and to make changes to its content without obligation to notify any person
of such revision or change.

Trademarks
All trademarks referenced in this document are the trademarks of their respective owners.

©2020 Trane BAS-SVX36D-EN

Table of Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Product Features and Capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Pre-Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Location Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Height Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Mounting Surfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Maximum Wire Lengths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Thermostat to HVAC Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Remote Sensor to Programmable Thermostat . . . . . . . . . . . . . . . . . . . . . 10

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Mounting the Back Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
General Practice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Terminal Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1-Heat/1-Cool Thermostat 14
3-Heat/2-Cool Non-Programmable Thermostat 16
Programmable Thermostat 19
Replacing the Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Applying Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Icon Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Overview of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Non-Programmable Thermostats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Changing the System Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Showing or Changing the Heating or Cooling Temperature Setpoint . . 33
Changing the Fan Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Programmable Thermostats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Setting the Time 34
Scheduling 34
Day-to-Day Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Showing the Setpoint or Temperature on Display 37
Timed Override (TOV) Mode 38
Locking or Unlocking Modes 38

Operational and Programming Reference Information . . . . . . . . . . . . . . . . . . 39

Deadband . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

BAS-SVX36D-EN 3
Table of Contents

Heat and Cool Cycling Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Minimum Compressor Off Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Configuration and Programming Retention . . . . . . . . . . . . . . . . . . . . . . . . . 39
Extended Fan-on Time (Heat or Cool) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Compressor and Auxiliary Heat Lockout . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Auxiliary Heat Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Economizer/TOD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
System Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Troubleshooting Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Thermostat Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

4 BAS-SVX36D-EN
Introduction
This document provides installation, operation, and troubleshooting information for three Trane
models of push-button thermostat:
• The Trane Programmable 3-Heat/2-Cool Thermostat:
– Trane PLM # X13511537-01
– Trane Clarksville part # BAYSTAT150A
– Service parts # THT02774
• The Trane (non-programmable) 3-Heat/2-Cool Thermostat:
– Trane PLM # X13511536-01
– Trane Clarksville part # BAYSTAT155A
– Service parts # THT02773
• The Trane (non-programmable) 1-Heat/1-Cool Thermostat:
– Trane PLM # X13511535-01
– Trane Clarksville part # BAYSTAT151A
– Service parts # THT02772
Note: To identify the thermostat type, locate the Trane PLM # and the Trane PLM #/Trane Clarksville
# on the thermostat circuit board.
The information contained in this document applies to either one or two models or to all.
Differences are noted where appropriate. If no difference between models is noted, assume that
all thermostat models share the information.

BAS-SVX36D-EN 5
Introduction

Product Features and Capabilities

The table below shows the functional differences between the three thermostat models.

(p/n X13511535-01)

(p/n X13511536-01)

(p/n X13511537-01)
1H/1C Thermostat

3H/2C Thermostat

Programmable
Thermostat
Thermostat Function or Feature
A liquid crystal display (LCD) with symbols for temperature, setpoints, and system operating
modes. The programmable thermostat also has day of the week, time of day, and occupancy   
settings.
System modes: Heat, Cool, Auto, Off. Both types of 3-Heat/2-Cool thermostat also have
  
Emergency Heat mode.
System Configuration Options. See “Configuration,” p. 25 for more information:
• 1-heat/1-cool, conventional   
• 1-heat/1-cool, heat pump without auxiliary heat   
• 1-heat only, conventional without fan   
• 1-heat only, conventional with fan   
• 1-cool, conventional   
• 2-heat/1-cool, heat pump with auxiliary heat  
• 2-heat/2-cool, conventional 
• 2-heat/1-cool, conventional  
• 1-heat/2-cool, conventional  
• 2-heat/2-cool, heat pump without auxiliary heat  
• 3-heat/2-cool, heat pump with auxiliary heat  
A heating and cooling setpoint range of 40ºF to 90ºF (4.5ºC to 32ºC)   
Two fan modes: On, Auto   
Additional configurable options (See “Configuration,” p. 25)   
Terminals and configuration options for a remote temperature sensor. Options include:
• Displaying the remote/outdoor temperature on the LCD 
• Using the remote/outdoor temperature to lockout the compressor or auxiliary heat 
• Using the remote/outdoor temperature instead of the built-in sensor 
Scheduling function with two or four periods per day and the following day/week options:
• 5/2 day schedule: weekdays share a schedule; Saturday and Sunday share a schedule 
• 5/1/1 day schedule: weekdays share a schedule; Saturday and Sunday have their own,

independent schedules
• 1 day schedule: Every day shares the same schedule 
• 7 day schedule: Each day has its own, independent schedule 
Temporary override function with configurable override time limit 

6 BAS-SVX36D-EN
 Introduction

Dimensions
Figure 1 and Figure 2 provide dimensions for each type of thermostat. The two non-programmable
thermostats have the same dimensions; the programmable thermostat has slightly different
dimensions.
Figure 1. Programmable Thermostat Dimensions

0.3 in.
(8 mm)

1.08 in.
(27.5 mm)
3.25 in.
(83 mm)

Typ. Radius
0.08 in.
(2 mm)

4.7 in.
(119 mm)

3.4 in.
(86 mm)

Typ.P Radius 0.08 in. (2 mm)

Note: Drawing not to scale. Dimensions within ± 0.02 in. (± 0.5 mm)

BAS-SVX36D-EN 7
Introduction

Figure 2. 1-Heat/1-Cool or 3-Heat/2-Cool (non-programmable) Thermostat Dimensions

0.3 in.
(8 mm)

1.1 in.
(28 mm)
3.07 in.
(78 mm)

Typ. Radius
0.08 in.
(2 mm)

4.7 in.
(119 mm)

3.4 in.
(86 mm)

Typ.P Radius 0.08 in. (2 mm)

Note: Drawing not to scale. Dimensions within ± 0.02 in. (± 0.5 mm)

8 BAS-SVX36D-EN
Pre-Installation
This section provides the following pre-installation information:
• Location considerations
• Height requirements
• Mounting surfaces
• Maximum wire length

Location Considerations
When selecting a location, avoid the following:
• Areas of direct sunlight
• Areas in the direct airstream of air diffusers
• Exterior walls and other walls that have a temperature differential between the two sides
• Areas that are close to heat sources such as sunlight, appliances, concealed pipes, chimneys,
or other heat-generating equipment
• Drafty areas
• Dead spots behind doors, projection screens, or corners
• Walls that are subject to high vibration
• Areas with high humidity
• High traffic areas (to reduce accidental damage or tampering)

Height Requirements
It is recommended that you mount the back plate a maximum distance of 54 in. (137 cm) above the
floor. If a parallel approach by a person in a wheelchair is required, reduce the maximum height
to 48 inches.
Note: Consult section 4.27.3 of the 2002 Americans with Disability Act guideline, and local building
codes, for further details regarding wheelchair requirements.

Mounting Surfaces
The thermostat can be mounted to any sturdy, vertical surface. Plastic threaded anchors and
M3.5 x 20 mm screws are provided for mounting to plaster or wallboard; 6-32 x 3/4 inch machine
screws are provided for mounting directly to a standard electrical device box. Other fastener
varieties may be required for other surface types.
When replacing a horizontally mounted thermostat and there is an adapter kit available to cover
any opening in the wall. Contact your local Trane office for more information.

BAS-SVX36D-EN 9
Pre-Installation

Maximum Wire Lengths

Thermostat to HVAC Equipment
The thermostat may not function properly if the total resistance of any of the thermostat to HVAC
equipment wires exceeds 2.5 ohms. To ensure that wire length does not cause excess resistance,
refer to Table 1 and ensure that the wires from the thermostat to the HVAC equipment are not too
long.

Table 1. Maximum Thermostat to HVAC Equipment Wire Lengths

Copper wire size Maximum recommended wire length

22 AWG (0.33 mm2) 150 ft (46 m)

20 AWG (0.50 mm2) 240 ft (73 m)

18 AWG (0.75 mm2) 385 ft (117 m)

Remote Sensor to Programmable Thermostat

Because remote temperature sensors measure resistance, very long cable runs can cause slight
errors in the measurement. For the highest temperature reading accuracy, avoid exceeding the
maximum recommended wire lengths shown in Table 2.

Table 2. Maximum Recommended Remote Sensor Wire Length

Maximum recommended remote
Copper wire size sensor wire length

22 AWG (0.33 mm2) 1000 ft (300 m)

20 AWG (0.50 mm2) 1500 ft (450 m)

18 AWG (0.75 mm2) 2500 ft (750 m)

Note: For 22 AWG (0.33 mm2) copper wires, the rate of error can be up to 0.5 °F (0.3 °C) per 100 ,
which typically requires wire lengths in excess of 5000 ft (1500 m).

10 BAS-SVX36D-EN
Installation
This section provides installation instructions.
Before you begin, read through the pre-installation information, beginning on p. 9, and also verify
the following conditions are met:
• A wire access hole is available at the thermostat location.
• The wires are accessible through the hole.
• The wires are attached to the appropriate terminals on the HVAC equipment.
• There is continuity (and not more than 2.5 ohms resistance) between the thermostat location
and the HVAC equipment.
• The wires are accurately labeled or identified by color.

Mounting the Back Plate

WARNING
Hazardous Voltage w/Capacitors!
Failure to disconnect power and discharge capacitors before servicing could result in death or
serious injury. Disconnect all electric power, including remote disconnects and discharge all
motor start/run capacitors before servicing. Follow proper lockout/ tagout procedures to
ensure the power cannot be inadvertently energized. Verify with a CAT III or IV voltmeter rated
per NFPA 70E that all capacitors have discharged.
For additional information regarding the safe discharge of capacitors, see PROD-SVB06*-EN.

NOTICE
Thermostat Damage!
Failure to follow instructions below could result in thermostat damage. The wired thermostat
operates at 24 Vac with a maximum of 27 Vac. Do not operate the thermostat at higher
voltages.

To mount the back plate:

1. Shut off power to the HVAC equipment.
Note: If the security screw is installed, remove it before attempting to remove the cover.
See Figure 3.
Figure 3. Security Screw Location (if used)

Security screw

BAS-SVX36D-EN 11
Installation

2. Remove the cover by firmly pressing the thumb tab at the bottom of the cover and pulling the
cover away from the back plate.
3. Feed the wires through the opening in the back plate.
Figure 4. Feeding Wires through Back Plate

4. If you are mounting the back plate directly to a wall surface, hold the back plate against the
surface and mark the fastener locations.
5. Secure the back plate using appropriate fasteners. (See “Mounting Surfaces,” p. 9.) The
thermostat must be level and plumb for accurate temperature control and to ensure proper air
movement through the thermostat enclosure.

Wiring

WARNING
Hazardous Voltage w/Capacitors!
Failure to disconnect power and discharge capacitors before servicing could result in death or
serious injury. Disconnect all electric power, including remote disconnects and discharge all
motor start/run capacitors before servicing. Follow proper lockout/ tagout procedures to
ensure the power cannot be inadvertently energized. Verify with a CAT III or IV voltmeter rated
per NFPA 70E that all capacitors have discharged.
For additional information regarding the safe discharge of capacitors, see PROD-SVB06*-EN.

NOTICE
Thermostat Damage!
Failure to follow instructions below could result in thermostat damage. The wired thermostat
operates at 24 Vac with a maximum of 27 Vac. Do not operate the thermostat at higher
voltages.

General Practice
To wire the thermostat:
1. Connect the wires to the terminal block(s) packaged in the box with the thermostat. (The
programmable thermostat has two terminal blocks, the non-programmable thermostats have
only one):
• Remove approximately 1/4 inch (6 mm) of insulation from the wires.
• Use the terminal block screws to securely fasten each wire into the terminal block.
• Refer to the section, “Terminal Identification,” p. 14 and the wiring diagrams on the pages
that follow to determine the correct terminal for each wire.

12 BAS-SVX36D-EN
 Installation

Note: In some cases the terminal labels (Y, G, R, etc.) correctly correspond to first letter of the
color wire to which they are connected. However, you must verify which equipment
terminals are connected at the other ends of the wires before connecting the wires to
the thermostat.
2. Align the pins on the circuit board with the holes on the bottom of the terminal blocks and gently
push the wired terminal blocks into place on the circuit board. See Figure 5.
Figure 5. Attaching the wired terminal blocks to the pins on the circuit boards

A S1 S2
W2 Y2

Y W Rc R O/B G AuxE Y2 L C W G
C G Y C Rc R Y
Rc R
S2
S1
(W1)

A
Y2
W2
W(O/B)

Rc
R
Y
G
C

xE)

G
W
B)

(Au

Y2

C
L
W (O/

Y
W2
G

Rc
R
C
Y
Rc

R
Programmable thermostat 3-Heat/2-Cool thermostat 1-Heat/1-Cool thermostat

3. Push the excess wire through the hole in the wall cavity or into the junction box.
Important: Do not coil excess wire between the thermostat and the back plate.
4. Use nonflammable insulation to prevent air movement between the wall cavity and the
thermostat.

BAS-SVX36D-EN 13
Installation

Terminal Identification
The table below defines the terminals for each of the thermostat types.

Where present:

(p/n X13511535-01)

(p/n X13511536-01)

(p/n X13511537-01)
1H/1C Thermostat

3H/2C Thermostat

Programmable
Thermostat
Terminal
Label Terminal Description
C Common   
G Fan Relay   
Y Stage 1 compressor control   
W (O/B) Heat relay (Changeover valve)(a)   
Rc 24Vac cooling These terminals are shipped with a jumper connected   
between them. Remove the jumper if the 24Vac power
R 24Vac heating supplies are separate.   

W2 (W1)
or Second stage heat (Auxiliary heat or emergency heat relay.)(a)  
W2 (Aux/E)
Y2 Stage 2 compressor control  
A Economizer 
S1 External sensor 
S2 External sensor 
(L) (Emergency heat indicator)(a) 
(a) Text (in parentheses) applies to heat pump systems.

Wiring Diagrams
The following diagrams show all of the common wiring scenarios you are likely to encounter.

1-Heat/1-Cool Thermostat
Use Table 3 and the diagrams that follow to correctly wire the thermostat for your system type.

Table 3. System Type Options for 1H/1C Non-Programmable Thermostats

System Type Value for Option 01 See Diagram

1-heat/1-cool, conventional 0 Figure 6

1-heat/1-cool, heat pump without auxiliary heat 1 Figure 7

1-heat only, conventional without fan 2 Figure 8

1-heat only, conventional with fan 3 Figure 9

1-cool, conventional 4 Figure 10

14 BAS-SVX36D-EN
 Installation

Figure 6. 1H/1C Thermostat, 1H/1C Conventional (option 0)

Single Transformer:
Rc (jumper
L1 (hot) R installed)
L2 24 Vac Y
Compressor
C
Heat W

Fan G

Two Transformers:

Cooling Transformer Rc (jumper

L1 (hot) R removed)
L2 24 Vac Y
Compressor
C
Heat W

Heating Transformer Fan G

L1 (hot)
24 Vac
L2
Figure 7. 1H/1C Thermostat, 1H/1C Heat Pump Without Auxiliary Heat (Option 1)

L1 (hot) Rc (jumper
L2 24 Vac R installed)
Y
Compressor
C
Changeover Valve O/B

Fan G

Figure 8. 1H/1C Thermostat, 1H Only, Conventional Without Fan (Option 2)

Rc (jumper
L1 (hot) R installed)
L2 24 Vac Y
C
Heat W
G

Figure 9. 1H/1C Thermostat, 1H Only, Conventional With Fan (option 3)

Rc (jumper
L1 (hot) R installed)
L2 24 Vac Y
C
Heat W

Fan G

Figure 10. 1H/1C Thermostat, 1C Only, Conventional (option 4)

Rc (jumper
L1 (hot) R installed)
L2 24 Vac Y
Compressor
C
W

Fan G

BAS-SVX36D-EN 15
Installation

3-Heat/2-Cool Non-Programmable Thermostat

Use Table 4 and the diagrams that follow to correctly wire the thermostat for your system type.

Table 4. System Type Options for 3H/2C Non-Programmable Thermostats

System Type Value for Option 01 See Diagram

1-heat/1-cool, conventional 0 Figure 11

1-heat/1-cool, heat pump without auxiliary heat 1 Figure 12

1-heat only, conventional without fan 2 Figure 13

1-heat only, conventional with fan 3 Figure 14

1-cool, conventional 4 Figure 15

2-heat/1-cool, heat pump with auxiliary heat 5 Figure 16

2-heat/1-cool, conventional 6 Figure 17

1-heat/2-cool, conventional 7 Figure 18

2-heat/2-cool, heat pump without auxiliary heat 8 Figure 19

3-heat/2-cool, heat pump with auxiliary heat 9 Figure 20

Figure 11. 3H/2C Non-Programmable Thermostat, 1H/1C, Conventional (Option 0)

Single Transformer:

Rc (jumper
L1 (hot) R installed)
L2 24 Vac Y
Compressor
C
Heat W
Fan G
W2
Y2
L

Two Transformers:

Cooling Transformer Rc (jumper

L1 (hot) R removed)
L2 24 Vac Y
Compressor
C

Heat W

Fan G
Heating Transformer
W2
L1 (hot) Y2
24 Vac
L2 L

Figure 12. 3H/2C Non-Programmable Thermostat, 1H/1C, Heat Pump Without Auxiliary heat
(Option 1)

L1 (hot) Rc (jumper
L2 24 Vac
R installed)
Compressor Y
C
Changeover Valve O/B
Fan G
Aux/E
Y2
L

16 BAS-SVX36D-EN
 Installation

Figure 13. 3H/2C Non-Programmable Thermostat, 1H Only, Conventional Without Fan (Option
2)

Rc (jumper
L1 (hot) R installed)
L2 24 Vac Y
C
Heat W
G
W2
Y2
L

Figure 14. 3H/2C Non-Programmable Thermostat, 1H, Conventional With Fan (Option 3)

Rc (jumper
L1 (hot) R installed)
L2 24 Vac Y
C
Heat W
Fan G
W2
Y2
L

Figure 15. 3H/2C Non-Programmable Thermostat, 1C, Conventional (Option 4)

Rc (jumper
L1 (hot) R installed)
L2 24 Vac Y
Compressor
C
W
Fan G
W2
Y2
L

Figure 16. 3H/2C Non-Programmable Thermostat, 2H/1C, Heat Pump With Auxiliary Heat
(Option 5)

L1 (hot) Rc (jumper
L2 24 Vac
R installed)
Compressor Y
C
Changeover Valve O/B
Fan G

Auxiliary Heat Aux/E

Y2
Zoning Panels L

BAS-SVX36D-EN 17
Installation

Figure 17. 3H/2C Non-Programmable Thermostat, 2H/1C, Conventional (Option 6)

Single Transformer:

Rc (jumper
L1 (hot) R installed)
L2 24 Vac Y
Compressor
C
Heat 1 W
Fan G

Heat 2 W2
Y2
L

Two Transformers:

Cooling Transformer Rc (jumper

L1 (hot) R removed)
L2 24 Vac Y
Compressor
C

Heat 1 W
Fan G
Heating Transformer
Heat 2 W2
L1 (hot) Y2
24 Vac
L2 L

Figure 18. 3H/2C Non-Programmable Thermostat, 1H/2C, Conventional (Option 7)

Single Transformer:

Rc (jumper
L1 (hot) R installed)
L2 24 Vac Y
Compressor 1
C
Heat W
Fan G
W2

Compressor 2 Y2
L

Two Transformers:

Cooling Transformer Rc (jumper

L1 (hot) R removed)
L2 24 Vac Y
Compressor 1
C

Heat W

Fan G
Heating Transformer
W2
L1 (hot) Compressor 2 Y2
24 Vac
L2 L

Figure 19. 3H/2C Non-Programmable Thermostat, 2H/2C, Heat Pump Without Auxiliary Heat
(Option 8)

L1 (hot) Rc (jumper
L2 24 Vac
R installed)
Compressor 1 Y
C
Changeover Valve O/B
Fan G
Aux/E

Compressor 2 Y2
L

18 BAS-SVX36D-EN
 Installation

Figure 20. 3H/2C Non-Programmable Thermostat, 3H/2C, Heat Pump With Auxiliary Heat
(Option 9)

L1 (hot) Rc (jumper
L2 24 Vac
R installed)
Compressor 1 Y
C
Changeover Valve O/B
Fan G
Auxiliary Heat Aux/E

Compressor 2 Y2

Zoning Panels L

Programmable Thermostat
Use Table 5 and the diagrams that follow to correctly wire the thermostat for your system type.

Table 5. System Type Options for Programmable Thermostats

System Type Value for Option 130 See Diagram

1-heat/1-cool, conventional 1 Figure 21

1-heat/1-cool, heat pump without auxiliary heat 2 Figure 22

1-heat only, conventional without fan 3 Figure 23

1-heat only, conventional with fan 4 Figure 24

1-cool, conventional 5 Figure 25

2-heat/1-cool, heat pump with auxiliary heat 6 Figure 26

2-heat/2-cool, conventional 7 Figure 27

2-heat/1-cool, conventional 8 Figure 28

1-heat/2-cool, conventional 9 Figure 29

2-heat/2-cool, heat pump without auxiliary heat 10 Figure 30

3-heat/2-cool, heat pump with auxiliary heat 11 Figure 31

BAS-SVX36D-EN 19
Installation

Figure 21. Programmable Thermostat, 1H/1C, Conventional (Option 1)

Single Transformer:

C
Fan G

Compressor Y
Heat W
L2 Rc (jumper
24 Vac
L1 (hot) R installed)
W2
Y2
Economizer/TOD A
S1
Remote Temperature Sensor
S2

Two Transformers:

Cooling Transformer
L2 C
L1 (hot) 24 Vac
Fan G
Compressor Y
Heating Transformer Heat W
Rc (jumper
L2
24 Vac R removed)
L1 (hot)
W2
Y2
Economizer/TOD A
S1
Remote Temperature Sensor
S2

Figure 22. Programmable Thermostat, 1H/1C, Heat Pump Without Auxiliary Heat (Option 2)

C
Fan G

Compressor Y

L2 Changeover Valve O/B

24 Vac (jumper
L1 (hot) Rc
R installed)

W1
Y2
Economizer/TOD A
S1
Remote Temperature Sensor
S2

Figure 23. Programmable Thermostat, 1H Only, Conventional Without Fan (Option 3)

C
G
Y
Heat W
L2 Rc (jumper
24 Vac installed)
L1 (hot) R

W2
Y2
Economizer/TOD A
S1
Remote Temperature Sensor
S2

20 BAS-SVX36D-EN
 Installation

Figure 24. Programmable Thermostat, 1H, Conventional With Fan (Option 4)

C
Fan G
Y
Heat W
L2 Rc (jumper
24 Vac installed)
L1 (hot) R

W2
Y2
Economizer/TOD A
S1
Remote Temperature Sensor
S2

Figure 25. Programmable Thermostat, 1C, Conventional (Option 5)

C
Fan G

Compressor Y
W
L2 Rc (jumper
24 Vac installed)
L1 (hot) R

W2
Y2

Economizer/TOD A
S1
Remote Temperature Sensor
S2

Figure 26. Programmable Thermostat, 2H/1C, Heat Pump With Auxiliary Heat (Option 6)

C
Fan G

Compressor Y

L2 Changeover Valve O/B

24 Vac (jumper
L1 (hot) Rc
R installed)

Auxiliary Heat W1
Y2
Economizer/TOD A
S1
Remote Temperature Sensor
S2

BAS-SVX36D-EN 21
Installation

Figure 27. Programmable Thermostat, 2H/2C, Conventional (Option 7)

Single Transformer:

C
Fan G

Compressor 1 Y
Heat 1 W
L2 Rc (jumper
24 Vac installed)
L1 (hot) R

Heat 2 W2
Compressor 2 Y2
Economizer/TOD A
S1
Remote Temperature Sensor
S2

Two Transformers:

Cooling Transformer
L2 C
L1 (hot) 24 Vac
Fan G
Compressor 1 Y
Heating Transformer Heat 1 W

L2 Rc (jumper
24 Vac R removed)
L1 (hot)
Heat 2 W2
Compressor 2 Y2
Economizer/TOD A
S1
Remote Temperature Sensor
S2

Figure 28. Programmable Thermostat, 2H/1C, Conventional (Option 8)

Single Transformer:

C
Fan G

Compressor Y
Heat 1 W
L2 Rc (jumper
24 Vac installed)
L1 (hot) R

Heat 2 W2
Y2
Economizer/TOD A
S1
Remote Temperature Sensor
S2

Two Transformers:

Cooling Transformer
L2 C
L1 (hot) 24 Vac
Fan G
Compressor Y
Heating Transformer Heat 1 W

L2 Rc (jumper
24 Vac R removed)
L1 (hot)
Heat 2 W2
Y2
Economizer/TOD A
S1
Remote Temperature Sensor
S2

22 BAS-SVX36D-EN
 Installation

Figure 29. Programmable Thermostat, 1H/2C, Conventional (Option 9)

Single Transformer:

C
Fan G

Compressor 1 Y
Heat W
L2 Rc (jumper
24 Vac installed)
L1 (hot) R

W2
Compressor 2 Y2
Economizer/TOD A
S1
Remote Temperature Sensor
S2

Two Transformers:

Cooling Transformer
L2 C
L1 (hot) 24 Vac
Fan G
Compressor 1 Y
Heating Transformer Heat W

L2 Rc (jumper
24 Vac R removed)
L1 (hot)
W2
Compressor 2 Y2
Economizer/TOD A
S1
Remote Temperature Sensor
S2

Figure 30. Programmable Thermostat, 2H/2C, Heat Pump Without Auxiliary Heat (Option 10)

C
Fan G

Compressor 1 Y

L2 Changeover Valve O/B

24 Vac (jumper
L1 (hot) Rc
R installed)

W1
Compressor 2 Y2
Economizer/TOD A
S1
Remote Temperature Sensor
S2

Figure 31. Programmable Thermostat, 3H/2C, Heat Pump With Auxiliary Heat (Option 11)

C
Fan G

Compressor 1 Y

L2 Changeover Valve O/B

24 Vac (jumper
L1 (hot) Rc
R installed)

Auxiliary Heat W1
Compressor 2 Y2
Economizer/TOD A
S1
Remote Temperature Sensor
S2

BAS-SVX36D-EN 23
Installation

Replacing the Cover

To replace the cover:
1. Hook the cover over the top of the back plate. Apply light pressure to the bottom of the cover
until it snaps in place.
2. If desired, install the security screw into the bottom of the cover. See Figure 32.
Figure 32. Close cover - insert security screw

Security screw

Applying Power
Applying power to the thermostat will initiate a power up sequence.
3. The full screen appears for 1.5 seconds.
4. The firmware version appears for 1.5 seconds:
• On the programmable thermostat, the firmware version shows in the HH:MM digits.
• On the non-programmable thermostats, the digits are split between the top and bottom
regions of the screen: the most significant digits are at the top.
5. Power up tests are performed.
• If an error is detected, an error code appears (see “Error Codes,” p. 41).
• If no errors are detected, the home screen appears (see Figure 33).
Figure 33. Home screens

Mo

.. AM

Programmable Non-programmable
thermostat thermostats

24 BAS-SVX36D-EN
Configuration

NOTICE
Adverse Control System Behavior!
Improper configuration could cause unwanted, possibly adverse control system behavior. Be
sure to configure the thermostat according to your system type.

To change the installation configuration:

1. Apply electrical power to the thermostat.
2. See the appropriate table for your thermostat type to determine the configuration options you
need:
• Table 6, p. 26 for 3-Heat/2-Cool programmable thermostats
• Table 7, p. 30 for 3-Heat/2-Cool non-programmable thermostats
• Table 8, p. 31 for 1-Heat/1-Cool, non-programmable thermostats
3. Write down your selections or other notes on the table.
4. Enter installer configuration mode:

WARNING
Live Electrical Components!
Failure to follow all electrical safety precautions when exposed to live electrical components
could result in death or serious injury.
When it is necessary to work with live electrical components, have a qualified licensed electrician
or other individual who has been properly trained in handling live electrical components perform
these tasks.

a. Remove the thermostat cover.

b. Press and hold the configuration button for at least 3 sec.
Figure 34. Pressing the Configuration Button

Programmable 3H/
2C configuration Non-programmable
Thermostat Non-Prog XH/XC
X########-## Rev X
BAYSTAT15#X
####XXX

button thermostats
configuration button

The configuration wrench icon appears, along with the option number and value:
Figure 35. Configuration Mode

Value

Option
Number
Non-Programmable
Thermostat
Programmable
Thermostat

Note: Configuration mode automatically ends if no buttons are pressed for 10 min.

BAS-SVX36D-EN 25
Configuration

5. Press , , or to scroll through the options, identified by their numbers, until you reach
the option you want to change:
scrolls to a lower-numbered option.
or scrolls to a higher-numbered option.
6. Use or to change the value of the option:
decreases the value.
increases the value.
7. Repeat Step 5 and Step 6 until you have made all necessary changes.
Note: Values are saved in permanent memory after setting a value and moving to next
configuration parameter, and also when you exit configuration mode.
8. Do one of the following to exit configuration mode:
• Remove the thermostat cover, if necessary, and then press and immediately release the
configuration button.
• Do not press any buttons for 10 min.
• Press and hold for 2 sec.

Table 6. Installation Options for 3-Heat/2-Cool Programmable Thermostat

No. Name Default Opts. Descriptions
0100 Temperature 0 0 °F, 1 degree resolution
indication/ 1 °F, 0.5 degree resolution
resolution
2 °C, 1 degree resolution
3 °C with 0.5 degree resolution
4 °C with 0.1 degree resolution
0110 Clock format 12 12 12 hour clock
24 24 hour clock
0120 Year 09 09-99 2009 - 2099
0121 Month 1 1-12 Months of the year
0122 Day 1 1-31 Days of the month
0125 Daylight savings 2 0 Disabled
1 US (1987), changeover at 2:00am
2 US (2007), changeover at 2:00am
3 Europe, changeover at 1:00am
4 Manual, changeover at 2:00am
0126 Spring month(a) 03 01-12 The month in which the Spring daylight savings change occurs
0127 Spring day 08 01-31 The day on which the Spring daylight savings change occurs
0128 Fall month 11 01-12 The month in which the Fall daylight savings change occurs
0129 Fall day 08 01-31 The day on which the Fall daylight savings change occurs
0130 System selection 8 1 1H/1C (conv) 1st Stage Heat (W), 1st Stage Comp (Y), Fan (G)
2 1H/1C (HP) 1st Stage Comp (Y), Changeover (O/B), Fan (G)
3 1H (Conv) 1st Stage Heat (W), without fan
4 1H (Conv) 1st Stage Heat (W), Fan (G)
5 1C (Conv) 1st Stage Comp (Y), Fan (G)
6 2H/1C (HP) 1st Stage Comp (Y), Changeover (O/B), Auxiliary Heat (W1),
Fan (G)
7 2H/2C (Conv) 1st & 2nd Stage Heat (W,W2), 1st & 2nd Stage 
Comp (Y,Y2), Fan (G)
8 2H/1C (Conv) 1st & 2nd Stage Heat (W,W2), 1st Stage Comp (Y), Fan (G)
9 1H/2C (Conv) 1st Stage Heat (W), 1st & 2nd Stage Comp (Y,Y2), Fan (G)
10 2H/2C (HP) 1st & 2nd Stage Comp (Y,Y2), Changeover (O/B), Fan (G)
11 3H/2C (HP) 1st & 2nd Stage Comp (Y,Y2), Changeover (O/B), Auxiliary
Heat (W1), Fan (G)

26 BAS-SVX36D-EN
 Configuration

Table 6. Installation Options for 3-Heat/2-Cool Programmable Thermostat (continued)

No. Name Default Opts. Descriptions
0140 Schedule options 1 0 Non-programmable
1 Programmable
0150 TOD/Economizer 0 0 Unused
output 1 TOD energizes terminal A during occupied period, not during
(terminal A) unoccupied period.
2 Economizer energizes terminal A during a call for cool
0151 Heat fan 0 0 System controls fan
operation 1 Thermostat controls fan
0153 Reversing value 0 0 O/B terminal energized in cooling
O/B 1 O/B terminal energized in heating
0160 CPH 1st stage 3 1-5 Cycles per hour for 1st stage compressor - only for systems with cool or heat
compressor(b) pump stage - also changes 2nd stage cool default CPH
0161 CPH 2nd stage 3 1-5 Cycles per hour for 2nd stage compressor - only for systems with two cool or
compressor(b) heat pump stages
0162 CPH 1st stage 5 1-10 Cycles per hour for 1st stage conventional heat - only for systems with heat
conventional stages - also changes 2nd stage heat default CPH
heat(b)
0163 CPH 2nd stage 9 1-10 Cycles per hour for 2nd stage conventional heat - only for systems with two
conventional conventional heat stages
heat(b)
0164 CPH for auxiliary 9 1-10 Cycles per hour for auxiliary heat - only for heat pump systems with more heat
heat(b) than cool stages
0165 CPH for 9 1-10 Cycles per hour for emergency heat - only for heat pump systems with more
emergency heat than cool stages
heat(b)
0170 Continuous 0 0 Backlight “ON” time is limited
backlight 1 Backlight does not turn off
0180 Changeover 1 0 Manual changeover (heat/cool/off) - manually changeover the thermostat
between heat, cool, and off
1 Auto changeover (heat/cool/auto/off) - manually changeover between heat,
cool, and off, or select automatic changeover
0181 Deadband(c) 3 2 2° F (1° C)
3 3° F (1.5° C)
4 4° F (2.0° C)
5 5° F (2.5° C)
6 6° F (3.0° C)
7 7° F (3.5° C)
8 8° F (4.0° C)
9 9° F (4.5° C)
0182 Minimum 5 0-5 Minutes for compressor off time - for systems with cool or heat pump stages
compressor off - (Minutes specified here are added to the 5 min base off time.)
time
0190 Power supply 0 0 60Hz
frequency 1 50 Hz
0210 Temperature 0 0 Internal for H/C - display can show only local temperature and setpoint
sensor selection 1 Internal for H/C - remote (connected to S1 & S2)(d) for display - display can
show local and remote temperature, and setpoint
2 Internal for H/C, remote (connected to S1 & S2)(d) for compressor and
auxiliary lockout; display can show local and remote temperature, and
setpoint - (Disabled for conventional systems.)
3 Remote (connected to S1 & S2)(d) for H/C, internal disabled; display can show
remote indoor temperature and setpoint

BAS-SVX36D-EN 27
Configuration

Table 6. Installation Options for 3-Heat/2-Cool Programmable Thermostat (continued)

No. Name Default Opts. Descriptions
0220 Heat pump 0 0 None
compressor 15 15° F (–9.5° C)
lockout point(e)
20 20° F (–6.5° C)
25 25° F (–4.0° C)
30 30° F (–1.0° C)
35 35° F (1.5° C)
40 40° F (4.5° C)
45 45° F (7.0° C)
0221 Heat pump aux 0 0 None
lockout point 40 40° F (4.5° C)
45 45° F (7.0° C)
50 50° F (10.0° C)
55 55° F (13.0° C)
60 60° F (15.5° C)
0230 Temp occupied 3 0 0 hours (Note: TOV function is still available)
duration limit for 1 1 hour
TOV override
2 2 hours
3 3 hours
4 4 hours
0231 Number of 2 2 Two scheduling periods per day
periods 4 Four scheduling periods per day
0232 Period occupied/ 4 If Option #0231 is set to 2:
unoccupied Day Night
definitions
0 Unoccupied Unoccupied
1 Unoccupied Occupied
2 Unoccupied Unoccupied
3 Unoccupied Occupied
4 Occupied Unoccupied
5 Occupied Occupied
6 Occupied Unoccupied
7 Occupied Occupied
8 Unoccupied Unoccupied
9 Unoccupied Occupied
10 Unoccupied Unoccupied
11 Unoccupied Occupied
12 Occupied Unoccupied
13 Occupied Occupied
14 Occupied Unoccupied
15 Occupied Occupied
If Option #0231 is set to 4:
Morning Day Evening Night
0 Unoccupied Unoccupied Unoccupied Unoccupied
1 Unoccupied Unoccupied Unoccupied Occupied
2 Unoccupied Unoccupied Occupied Unoccupied
3 Unoccupied Unoccupied Occupied Occupied
4 Unoccupied Occupied Unoccupied Unoccupied
5 Unoccupied Occupied Unoccupied Occupied
6 Unoccupied Occupied Occupied Unoccupied
7 Unoccupied Occupied Occupied Occupied
8 Unoccupied Unoccupied Unoccupied Unoccupied
9 Occupied Unoccupied Unoccupied Occupied
10 Occupied Unoccupied Occupied Unoccupied
11 Occupied Unoccupied Occupied Occupied
12 Occupied Occupied Unoccupied Unoccupied
13 Occupied Occupied Unoccupied Occupied
14 Occupied Occupied Occupied Unoccupied
15 Occupied Occupied Occupied Occupied

28 BAS-SVX36D-EN
 Configuration

Table 6. Installation Options for 3-Heat/2-Cool Programmable Thermostat (continued)

No. Name Default Opts. Descriptions
0233 Scheduling mode 0 0 1 day - Mo-Su share the same schedule
day options 1 5+1+1 days - Mo-Fr share a schedule; Sa and Su each have an independent
schedule
2 5+2 days - Mo-Fr share a schedule; Sa-Su share a schedule
3 7 days - Each day has an independent schedule
0240 Heat 90 40 - 90 40° F to 90° F
temperature 4 - 32 4° C to 32° C
range stops(f)
0241 Cool temperature 50 50 - 99 50° F to 99° F
range stops(g) 10 - 37 4° C to 32° C
0260 Temperature 0 -3 –3° F (–1.5° C)
display offset(h) -2 –2° F (–1.0° C)
-1 –1° F (–0.5° C)
0 None
1 1° F (0.5° C)
2 2° F (1.0° C)
3 3° F (1.5° C)
0270 Extended fan-on 0 0 Off
time heat(i)(j) 90 90 sec
0271 Extended fan-on 0 0 Off
time cool(i)(g) 40 40 sec
0300 Restore factory 0 0 No - do not restore
defaults 1 Yes - reset all installer options to default except calendar, and system
selection - options 0120-0122 and 0125-0130 do not reset.
(a) Only available if option #0125 is set to 4.
(b) See “Heat and Cool Cycling Rate,” p. 39.
(c) See “Deadband,” p. 39.
(d) If an external sensor is attached to the S1 and S2 terminals, it must be 10Knegative temperature coefficient.
(e) Only available for heat pump systems with more heat than cool stages and remote outdoor sensor. A 5 °F (2.5 °C) dead
band between options #0220 and #0221 will be enforced automatically.
(f) Only applies to systems with heat stages.
(g) Only applies to systems with cool stages.
(h) Only applies to control temperature and display temperature for internal and indoor remote sensor. Does not apply to outdoor
temperature for display.
(i) See “Extended Fan-on Time (Heat or Cool),” p. 40.
(j) Only available when option #0151 is set to 1.

BAS-SVX36D-EN 29
Configuration

Table 7. Installation Options for 3-Heat/2-Cool Non-Programmable Thermostat

No. Name Default Opts. Descriptions
01 System type 0 0 1H/1C, conventional - 1st stage heat (W), 1st stage 
compressor (Y)
1 1H/1C, heat pump without auxiliary heat - 1st stage compressor (Y),
changeover (O/B)
2 1H, conventional without fan - 1st stage heat (W)
3 1H, conventional with fan - 1st stage heat (W), fan (G)
4 1C, conventional - 1st stage compressor (Y)
5 2H/1C, heat pump with auxiliary heat - 1st stage compressor (Y), changeover
(O/B), auxiliary heat (Aux/E)
6 2H/1C, conventional - 1st & 2nd stage heat (W,W2), 1st stage compressor (Y)
7 1H/2C, conventional - 1st stage heat (W), 1st & 2nd stage compressor (Y, Y2)
8 2H/2C, heat pump without auxiliary heat - 1st & 2nd stage compressor (Y,
Y2), changeover (O/B)
9 3H/2C, heat pump with auxiliary heat - 1st & 2nd stage compressor (Y, Y2),
changeover (O/B), auxiliary heat (Aux/E)
02 Changeover 0 0 O/B terminal energized in cooling
valve 1 O/B terminal energized in heating
03 Fan control(a) 0 0 Gas or oil furnace, equipment controls fan for heating
1 Electric furnace, thermostat controls fan in heating
04 Stage 1 heat 5 1-10 Cycles per hour for 1st stage conventional heat - only available on systems
cycle rate(b) with conventional heat
05 Stage 1 3 1-5 Cycles per hour for 1st stage compressor - only available on systems with cool
compressor cycle stages
rate(b)
06 Manual/Auto 0 0 Manual changeover (heat/cool/off) - manually changeover between heat,
changeover cool, and off
1 Auto changeover (heat/cool/auto/off) - manually changeover between heat,
cool, and off, or select automatic changeover
2 Auto changeover only (auto) - no manual changeover
07 Temperature 0 0 °F with 1 degree resolution
indication/ 1 °F with 0.5 degree resolution
resolution
2 °C with 1 degree resolution
3 °C with 0.5 degree resolution
4 °C with 0.1 degree resolution
08 Compressor 5 0-5 Minutes for compressor off time - only available on heat pump systems or
protection systems with cool stages - (Minutes specified here are added to the 5 min
base off time.)
09 Heat 90 40-90 Heating high temperature range stop in °F. (4.5-32°C)
temperature
range stop
10 Cool temperature 50 50-99 Cooling low temperature range stop in °F. (10-37°C)
range stop
11 Power supply 0 0 60 Hz
frequency 1 50 Hz
12 Deadband(c) 3 2 2°F (1.0°C)
3 3°F (1.5°C)
4 4°F (2.0°C)
5 5°F (2.5°C)
6 6°F (3.0°C)
7 7°F (3.5°C)
8 8°F (4.0°C)
9 9°F (4.5°C)
13 Stage 2 heat 9 1-10 Cycles per hour for 2nd stage conventional heat - only available for
cycle rate(b) conventional systems with at least two stages conventional heat
14 Auxiliary heat 5 1-10 Cycles per hour for auxiliary heat - only for heat pump systems with more
cycle rate(b) heat than cool stages
15 Emergency heat 5 1-10 Cycles per hour for emergency heat - only for heat pump systems with more
cycle rate(b) heat than cool stages.
16 Stage 2 3 1-5 Cycles per hour for 2nd stage compressor - only for systems with two cool
compressor cycle stages
rate(b)
17 Auxiliary heat 0 0 Comfort
control 1 Economy
18 Restore factory 0 0 No - do not reset
defaults 1 Yes - reset all installation configurations (all settings in this table) to default
settings, except System selection
(a) These options only available on systems with fans.
(b) See “Heat and Cool Cycling Rate,” p. 39.
(c) See “Deadband,” p. 39. For auto or manual systems (see Option 01).

30 BAS-SVX36D-EN
 Configuration

Table 8. Installation Options for 1-Heat/1-Cool Non-Programmable Thermostat

No. Name Default Opts. Descriptions
01 System type 0 0 1H/1C, conventional -1st stage heat (W), 1st stage compressor (Y)
1 1H/1C, heat pump - 1st stage compressor (Y), changeover (O/B)
2 1H, conventional, without fan - 1st stage heat (W)
3 1H, conventional with fan -1st stage heat (W), fan (G)
4 1C, conventional - 1st stage compressor (Y)
02 Changeover 0 0 O/B terminal energized in cooling
valve 1 O/B terminal energized in heating
03 Fan control(a) 0 0 Gas or oil furnace, equipment controls fan for heating
1 Electric furnace, thermostat controls fan in heating
04 Stage 1 heat 5 1-10 Cycles per hour for 1st stage conventional heat - only available on systems
cycle rate(b) with conventional heat
05 Stage 1 3 1-5 Cycles per hour for 1st stage compressor - only available on systems with cool
compressor cycle stages
rate(b)
06 Manual/Auto 0 0 Manual changeover (heat/cool/off) - manually changeover between heat,
changeover cool, and off
1 Auto changeover (heat/cool/auto/off) - manually changeover between heat,
cool, and off, or select automatic changeover
2 Auto changeover only (auto) - no manual changeover
07 Temperature 0 0 0°F with 1 degree resolution
indication/ 1 °F with 0.5 degree resolution
resolution
2 °C with 1 degree resolution
3 °C with 0.5 degree resolution
4 °C with 0.1 degree resolution
08 Compressor 5 0-5 Minutes for compressor off time - only available on heat pump systems or
protection systems with cool stages - (Minutes specified here are added to the 5 min base
off time.)
09 Heat 90 40-90 Heating high temperature range stop in °F. (4.5-32°C)
temperature
range stop
10 Cool temperature 50 50-99 Cooling low temperature range stop in °F. (10-37°C)
range stop
11 Power supply 0 0 60 Hz
frequency 1 50 Hz
12 Deadband(c) 3 2 2°F (1.0°C)
3 3°F (1.5°C)
4 4°F (2.0°C)
5 5°F (2.5°C)
6 6°F (3.0°C)
7 7°F (3.5°C)
8 8°F (4.0°C)
9 9°F (4.5°C)
18 Restore factory 0 0 No - do not reset
defaults 1 Yes - reset all installation configurations (all settings in this table) to default
settings, except System selection
(a) These options only available on systems with fans.
(b) See “Heat and Cool Cycling Rate,” p. 39.
(c) See “Deadband,” p. 39. For auto or manual systems (see Option 01).

BAS-SVX36D-EN 31
Operation
This section provides general descriptive and procedural information intended for typical daily
operators of the thermostat.

Icon Descriptions
Figure 36 describes the icons visible on the front of the thermostat.
Note: Except when the thermostat is powering up, when all of the icons are shown for 2 sec, only
some of the icons will be visible at once.

Figure 36. Thermostat Icons

Large numeric display - Shows current temperature but Temperature units - F or C.

can indicate other information. Fan mode indicator - auto or on.

Setpoint indicator - upper arrow

Period indicator - morning, day,
indicates cooling setpoint; lower arrow
evening, night.
indicates heating setpoint.

Heating mode indicator - heating, cooling,

automatic heating/cooling, or off. .
.

Time of day - 12 hour clock with AM and PM Mo Tu We Th Fr Sat Su

indicator or 24 hour clock.

AM
PM
DAYS HOURS

Configuration/test indicator - solid for

configuration mode; flashing for test mode. Icons on the non-
programmable thermostats
Space unoccupied indicator. have the same function, but
no programming/
Timed override indicator scheduling-related buttons
appear.
Space occupied indicator
Button lock indicator

Overview of Operation
If configured properly, both programmable and non-programmable thermostats will control HVAC
equipment to maintain room temperature automatically.

Non-Programmable Thermostats
Non-programmable thermostats do not have timekeeping or scheduling capabilities. They will
continue to maintain heating and/or cooling setpoints until an operator makes changes to the
setup. Therefore, only the following tasks may be required performed:
• Change the system mode.
• Show or change the heating or cooling temperature setpoint.
• Change the fan mode.
Note: The system mode, temperature setpoints, and fan mode can each be individually locked to
prevent users from changing them. If you see a on the display, you may need to unlock
the setting before you change it (see “Locking or Unlocking Modes,” p. 38).

32 BAS-SVX36D-EN
 Operation

Changing the System Mode

Note: If you are unable to change the system mode, check the system type setting and the manual/
auto changeover setting (see “Configuration,” p. 25) to verify that the thermostat is
configured with heat and cool modes, and that it permits manually changing them.
Depending upon the model and system type, the thermostat can be set to one of five modes:
Cooling, Heating, Emergency Heat, Auto, or Off.
Cooling mode cools the room to bring it down to the cooling setpoint.

Heating mode heats the room to bring it up to the heating setpoint.

Emergency Heat mode heats the room according to the heating unit’s emergency heat mode
settings.

Auto mode switches automatically between heating and cooling modes as required.

Off mode prevents the thermostat from requesting any heating or cooling regardless of the
room temperature. Off mode also disables fan selection and prevents the user from changing
the setpoint.

Note: The 1-Heat/1-Cool thermostat does not have Emergency Heat mode.
To change the system mode:
1. Press > . The current mode flashes.

2. Press or to select a mode.

3. Tap or wait 5 sec to save and exit.

Showing or Changing the Heating or Cooling Temperature Setpoint

To change the heating or cooling setpoint:
1. Press or once. This shows the active setpoint.
2. Within 5 sec:
• Press or to increase or decrease the setpoint.
• Press or to change between heat and cool setpoints if both are enabled.
3. Tap or wait 5 sec to save and exit.

Changing the Fan Mode

Note: If you are unable to see the fan mode, check the system type setting in the installation
configuration options to make sure that it is specified as a system with a fan.
There are two fan modes. Each are indicated by an icon on the display:
Auto mode turns the fan on and off as needed according to equipment configuration.

On runs the fan continuously.

To change the fan mode:

1. Press > > . The current mode flashes.

2. Press or to change the mode. The selected mode flashes.

BAS-SVX36D-EN 33
Operation

Note: If you are unable to change the mode and flashes, the mode is locked. See “Locking
or Unlocking Modes,” p. 38.
3. Tap or wait 5 sec to save and exit.

Programmable Thermostats
Programmable thermostats contain all of the functionality of the non-programmable thermostats,
but they also keep track of the date, day of week, and time of day for scheduling purposes.

Programming
This section describes how to program the thermostat after it has been installed and configured.

Setting the Time

The time must be set in the thermostat to ensure operation of the schedule.
Note: The date is set during configuration and the day of the week is calculated automatically
according to the date.
To set the time:
1. Press > > > > > . The hour flashes to indicate that it can be changed.

Mo
AM

Note: The thermostat automatically returns to normal operating mode if no buttons are
pressed for 10 sec.
2. Make changes to the hour and minute, as needed:
• Press or to switch between hours and minutes. The changeable option flashes to
indicate that it can be changed.
• Press or to change the value of the option.
3. Press and hold for 2 sec or wait 10 sec to apply the change and exit.

Scheduling
The thermostat can be configured for two periods (day and night) or four periods (morning, day,
evening, and night). The chosen number of periods are applied to each day of the week when you
program the thermostat. Each period can have a unique start time, heat setpoint, cool setpoint, and
fan setting.
The groups of days can be one of the following:
• 1 day = all 7 days of the week follow the same schedule.
• 5+1+1 days = Monday - Friday all follow the same schedule; Saturday and Sunday each follow
their own schedules.
• 5+2 days = Monday - Friday all follow the same schedule; Saturday and Sunday follow the same
schedule, which is different than the Monday - Friday schedule.
• 7 days = Each day follows its own schedule.
Note: See “Configuration,” p. 25 to change the number of periods in a day or the grouping of days
in the schedule.
If needed, you can use Table 9 to write down your schedule settings before you begin setting up
the schedule. The default schedule is also shown in the table. Unless you program your own
schedule settings, the thermostat follows the default schedule for all days of the week.

34 BAS-SVX36D-EN
 Operation

Table 9. Weekly Operating Schedule Worksheet

Day Period Start time Heating setpoint Cooling setpoint Fan Setting

Morning 6:00 am 70° F (21.0° C) 78° F (25.5° C) Auto

Day 8:00 am 62° F (16.5° C) 85° F (29.5° C) Auto

Four period
default settings
Evening 6:00 pm 70° F (21.0° C) 78° F (25.5° C) Auto

Night 10:00 pm 62° F (16.5° C) 82° F (28.0° C) Auto

Day 6:00 am 70° F (21.0° C) 78° F (25.5° C) Auto

Two period
default settings
Night 10:00 pm 55° F (13.0° C) 85° F (29.5° C) Auto

Morning : ° ° Auto On

Day : ° ° Auto On
Monday
Evening : ° ° Auto On

Night : ° ° Auto On

Morning : ° ° Auto On

Day : ° ° Auto On
Tuesday
Evening : ° ° Auto On

Night : ° ° Auto On

Morning : ° ° Auto On

Day : ° ° Auto On
Wednesday
Evening : ° ° Auto On

Night : ° ° Auto On

Morning : ° ° Auto On

Day : ° ° Auto On
Thursday
Evening : ° ° Auto On

Night : ° ° Auto On

Morning : ° ° Auto On

Day : ° ° Auto On
Friday
Evening : ° ° Auto On

Night : ° ° Auto On

Morning : ° ° Auto On

Day : ° ° Auto On
Saturday
Evening : ° ° Auto On

Night : ° ° Auto On

Morning : ° ° Auto On

Day : ° ° Auto On
Sunday
Evening : ° ° Auto On

Night : ° ° Auto On

To set the schedule:

BAS-SVX36D-EN 35
Operation

1. Press > > > . The display shows only the following elements:

Mo Tu We Th Fr Sa Su

2. Press .
Note: At this point the thermostat is in schedule change mode. It returns to normal operating
mode if no buttons are pressed for 45 sec. To manually exit schedule change mode, press
and hold for 2 sec.
Note: If flashes and you are unable to enter schedule change mode, the mode is locked. See
“Locking or Unlocking Modes,” p. 38.
3. Press or to select the day or days for which you want to set the schedule. The selected day
or days flash.
4. Press to accept the selection. , , , or starts flashing.
5. Press or to select the period. The selected period starts flashing.
6. Press to accept the selection. The start time starts flashing.

Mo
AM

7. Press or to select the start time. Time is increased or decreased in 10 min steps.
8. Press to accept the selection. If there is a heat mode configured, the heat setpoint appears
and its icons start flashing.

9. Press or to select the heating setpoint.

Note: The heating and cooling setpoints cannot be closer together than the deadband, which
is specified in installer configuration option #0181 (see “Configuration,” p. 25). If you
raise the heating setpoint or reduce the cooling setpoint to a value that would violate
the deadband setting, the opposing setpoint will also adjust to maintain the deadband.
10. Press to accept the selection. If there is a cool mode configured, the cooling setpoint
appears and its icons start flashing.

11. Press or to select the cool setpoint.

12. Press to accept the selection. or starts flashing.
13. Press or to select the fan setting.
• to turn it on and off automatically
• to keep the fan on continuously
14. Press to accept the selection. This completes the schedule settings for one period of one
day of the week.
15. Repeat Step 3 through Step 14 once for each day and period you need to set.

36 BAS-SVX36D-EN
 Operation

Day-to-Day Operation
After a programmable thermostat is configured and the schedule is programmed, the thermostat
automatically changes the setpoints and fan settings according to the schedule.However, there are
some operator tasks that you may need or want to perform:
• Show setpoint or current temperature. You can temporarily or permanently switch the main
display from current temperature to temperature setpoint. See “Showing the Setpoint or
Temperature on Display,” p. 37.
• Set the system mode, which includes turning the system on or off, and switching between
heating, cooling, and automatic heating and cooling. See “Changing the System Mode,” p. 33.
• Override the schedule. If an unexpected, one-time temperature setpoint or fan mode change is
needed you can temporarily override the schedule. See “Timed Override (TOV) Mode,” p. 38.
• Lock or unlock. You can lock the thermostat buttons to prevent changes to the thermostat
settings. See “Locking or Unlocking Modes,” p. 38.
Note: It is possible for a programmable thermostat to be configured to be a non-programmable
thermostat. If installation configuration option #140 is set to 0, schedule programming
capabilities will be absent.

Showing the Setpoint or Temperature on Display

Depending upon the value of configuration option #210, the large numeric display could show any
of the following:
Figure 37. Display Options

“o dr” indicates outdoor

Arrow indicates temperature (after 8 sec,
setpoint returns to previous mode)

Mo

.. AM

Current temperature Current (or most Current outdoor

recent) setpoint temperature

Value of configuration Numeric display options 

option #210 (press and for 3 sec to change)
0 The current local temperature, or the current or most recent temperature setpoint
The current local or remote indoor temperature or the current or most recent temperature
1 or 2
setpoint
The current indoor temperature, the current or most recent temperature setpoint, or the
3 current remote outdoor temperature, which only appears for 8 sec before reverting to
current indoor temperature or setpoint

To switch between the current temperature, “o dr” temperature, and the setpoint temperature,
press and hold the and buttons for 3 sec. The display will toggle as shown in Figure 37.

BAS-SVX36D-EN 37
Operation

Timed Override (TOV) Mode

During normal operation, the thermostat controls the HVAC equipment according to the schedule
that is programmed into it. To permanently change the temperature setpoint or fan setting, make
the change in the programmed schedule (see “Scheduling,” p. 34). However, a timed override can
be used to temporarily change the current settings without making any change to the schedule.
To start a temperature setpoint override:
1. Press or . The current temperature setpoint appears.
2. Within 5 sec of Step 1, press to raise the setpoint or to lower the setpoint. The
thermostat enters timed override mode, giving you the opportunity to specify the other
parameters of the override.
3. Press and release or (or , which has the same function as ) to scroll to heating or
cooling temperature setpoints, fan mode, override duration, or occupancy setting.
4. When you reach the function you want to change as part of the override, press and make
the changes.
5. Once you have specified all needed changes, press and hold for 2 sec or wait 15 sec to save
and exit.
6. Press and hold and for 2 sec from the home screen or when in TOV setup mode to exit
without entering TOV mode.

Locking or Unlocking Modes

You can independently lock and unlock the system, fan, and schedule change modes. When a lock
is activated, users cannot change the current mode or schedule settings. If you attempt to make a
change, flashes on the display.
To lock a mode:
1. Enter the mode you want to lock:
• > > for system mode
• > > for fan mode
• > > > for schedule mode (programmable thermostat only)
2. Make sure that the mode or schedule you entered is correct; if not, make the necessary changes.
3. Simultaneously press and hold and for 4 sec. When the mode is locked, appears on the
display.
To unlock a mode:
1. Enter the mode you want to unlock:
• > > for system mode
• > > for fan mode
• > > > for schedule mode (programmable thermostat only)
2. Simultaneously press and hold and for 4 sec. When the mode is unlocked, disappears.

38 BAS-SVX36D-EN
Operational and Programming Reference Information
This section provides additional information that may be useful for understanding thermostat
operation or programming.

Deadband
The thermostat automatically maintains a temperature deadband between the heating setpoint
and the cooling setpoint whenever automatic changeover (heat-to-cool or cool-to-heat mode) is
enabled. The temperature range of the deadband is 2–9 °F (1.0–4.5°C) and is specified in the
installation configuration options (see “Configuration,” p. 25). If you attempt to change a
temperature setpoint to within the deadband of its opposing setpoint, the opposing setpoint will
automatically be pushed to the next value that satisfies the deadband. (See Figure 38.)

Heat and Cool Cycling Rate

The heat and cool cycling rate, expressed in cycles per hour (CPH) indicates how often heating or
cooling system is turned on when temperature is within the temperature differential from the
setpoint, which is 1°F (0.5°C). There are ten options (1–10) for heat stages and five options (1–5) for
cool stages. The number selected is the maximum number of times the stage is cycled in 1 hr.
For example, when the system is set to 5 CPH, it runs at 12 min cycles with variable duty cycle.
Depending on the heating or cooling load, which is measured by feedback from the sensor
thermistor and/or temperature error, the system could run at 50% duty cycle (6 min ON and 6 min
OFF), 80% duty cycle (9.6 min ON and 2.4 min OFF), or other variations of the duty cycle.
Note: The cycling rate described above is only active when the temperature is within the
temperature differential. If the temperature is outside of the temperature, the heating and
cooling equipment will either be fully on or fully off accordingly. (See Figure 38.)
Figure 38. General Heat and Cool Cycling Rate Diagram
Output All heat stages All cool stages
All heat cycling dependent cycling dependent All cool
stages on on load on load stages on
100 %

All heat and cool

stages off
0%
TD TD TD TD Temperature

Heat set point Cool set point

temperature differential temperature differential
(TD) is ±1°F (0.5°C) (TD) is ±1°F (0.5°C)
centered on set point centered on set point

Adjustable deadband
2–9°F (1–4.5°C)

There is one cycling rate setting for each of the thermostat’s available heat and cool stages,
including auxiliary and emergency heat stages. You can specify them during installation
configuration. See “Configuration,” p. 25.

Minimum Compressor Off Time

To protect the compressor from cycling too frequently, there is an automatic 5 min gap between
cycles. You cannot reduce the gap, but you can add up to 5 min if needed. See “Configuration,”
p. 25.

Configuration and Programming Retention

The thermostat retains the time and date for a minimum of 5 days with no electricity. If power is
lost for more than 5 days, you will need to reset the time and date when power is restored.

BAS-SVX36D-EN 39
Operational and Programming Reference Information

All configuration parameters, system settings, and scheduling are stored in non-volatile memory,
which will retain the data indefinitely with or without power.
Note: You can manually revert to default settings by setting the appropriate installation parameter
(#300 for programmable thermostats or #18 for non-programmable thermostats) to a value
of 1, and exiting configuration mode.

Extended Fan-on Time (Heat or Cool)

Note: This feature applies only to the programmable thermostat.
When the thermostat fan is in Auto mode, the fan on time can be extended.
• Configuration option #270 extends the fan on time by 90 sec after heat turns off.
• Configuration option #271extends the fan on time by 40 sec after cool turns off.
These options may not be available for some system configurations. See “Configuration,” p. 25.

Compressor and Auxiliary Heat Lockout

Note: This feature applies only to the programmable thermostat.
Compressor and auxiliary heat is used for heat pump systems with more heat stages than cool
stages. When the temperature from an outdoor sensor is
• above the auxiliary lockout point, only the compressor will operate on a call for heat.
• below the compressor lockout point, only the auxiliary heat will operate on a call for heat.
• between the compressor and auxiliary lockout point, the compressor and auxiliary heat will
operate on a call for heat.
There is a minimum 5°F (2.5°C) deadband between compressor and auxiliary heat lockout
temperatures. Configuration option #220 sets the compressor lockout point; #221 sets the auxiliary
lockout point. See “Configuration,” p. 25.

Auxiliary Heat Control

Note: This feature applies only to the non-programmable 3-Heat/2-Cool thermostat.
You can set the auxiliary heat control using configuration option #17 to one of two settings:
• Comfort - prioritizes comfort over economy. Raising the temperature just a few degrees often
will activate the auxiliary heat.
• Economy - attempts to reach the temperature setting without activating the auxiliary heat.

Economizer/TOD
Note: This feature applies only to the programmable thermostat.
You can set the Economizer or TOD mode using configuration option #150 to one of two settings:
• Economizer Mode - “A” terminal is energized with the thermostat in Occupied mode,
Unoccupied mode with a call for cool, or a Timed Override mode (TOV) active.
• TOD Mode - “A” terminal is energized with thermostat in Occupied mode or a Timed Override
mode (TOV) active.

40 BAS-SVX36D-EN
Troubleshooting
This section describes troubleshooting for the thermostat.

Error Codes
An error code indicates that technical assistance may be required.
Try cycling the power to the thermostat as a first method to clear the error. See Table 10 below and
Table 12, p. 44 for additional information.
Note: On the display, error codes appear at the bottom of the display.
Note: On the programmable thermostat, the error code alternates with the time on the display.

Table 10.Error Codes

Code Description

Thermistor Error; occurs when the configured thermistor reading is out of range (less
than 14°F (-9.9°C) or greater than 122°F (50°C). If this error occurs:
E0 • All Heat/Cool outputs turn off.
• If the fan mode is Auto, the thermostat turns off the fan.
• If the fan mode is On, the thermostat leaves the fan on.

E3 Permanent data error. Access error or checksum error is detected.

Input voltage out of range - too low or too high. Input voltage is lower than 18Vac or
E4 higher than 34Vac. The error code display will remain on for 30 sec after the detection
of out of range input voltage.

E5 RTC Error (this error can only appear on the programmable thermostat).

E7 Memory error (write and read 0x55 and 0xAA failed). Only checked during power up test.

System Test Mode

You can run diagnostic tests on the thermostat to verify that the thermostat is functioning properly
and that the devices in the system are wired properly.
To enter system test mode:
1. Apply electrical power to the thermostat.
2. Enter installer configuration mode:

WARNING
Live Electrical Components!
Failure to follow all electrical safety precautions when exposed to live electrical components
could result in death or serious injury.
When it is necessary to work with live electrical components, have a qualified licensed electrician
or other individual who has been properly trained in handling live electrical components perform
these tasks.

a. Remove the thermostat cover.

b. Press and hold the configuration button for at least 3 sec, then release it.

BAS-SVX36D-EN 41
Troubleshooting

Figure 39. Pressing the Configuration Button

Programmable 3H/
2C configuration
Non-programmable
Thermostat Non-Prog XH/XC
X########-## Rev X
BAYSTAT15#X

button
####XXX

thermostats
configuration button

The configuration wrench icon appears, along with the option number and value.
3. Press and hold the configuration button again for at least 3 sec, then release it. The thermostat
goes into system test mode:
• The wrench icon flashes.
• The system test number appears in small digits at the lower part of the display.
• The test setting value appears in large digits at the top part of the display.
Figure 40. System Test Mode

Value

System
Test
Number

Programmable Non-Programmable
Thermostat Thermostat

Note: System test mode automatically ends if no buttons are pressed for 10 min.
While in system test mode, you can scroll from one test to the next, change the value for the
test, then test or observe the system for the expected result. The numbers and values are shown
in Table 11, p. 43. Some values are retained when you scroll to the next number; others are
deactivated when you scroll to the next number, as indicated in the table.
4. Press , , or to scroll through the options, identified by their numbers, until you reach
the option you want to change:
or scrolls to the next larger numbered option.
scrolls to the next lower-numbered option.
5. Use or to change the value of the option:
decreases the value.
increases the value.
6. Repeat Step 4 and Step 5 until you have conducted all needed tests.
7. Change the value of the power up test (test number 8 for the 1-Heat/1-Cool thermostat; test
number 11 for the 3-Heat/2-Cool or programmable thermostat) to 1 to run a power up test after
you exit test mode.
8. Do one of the following to exit test mode:
• Remove the thermostat cover, if necessary, and then press and immediately release the
configuration button.
• Do not press any buttons for 10 min.
• Press and hold for 2 sec.

42 BAS-SVX36D-EN
 Troubleshooting

Table 11. System Test Descriptions

Test Number

(p/n X13511535-01)

(p/n X13511536-01)
1H/1C Thermostat

3H/2C Thermostat

Programmable
Thermostat

Description Values
0 = all heating stages off
1 = heat stage 1 on; heat stage 2 off
1(a) 1 1 Heating system 2 = heat stage 2 on; heat stage 1 off
3 = heat stage 1 and 2 on
This setting remains active when you scroll to the next setting.
0 = all cooling stages off
1 = cool stage 1 on; cool stage 2 off
2(a) 2 2 Cooling system 2 = cool stage 2 on; cool stage 1 off
3 = cool stage 1 and 2 turn on
This setting remains active when you scroll to the next setting.
0 = fan off
3 3 3 Fan system 1 = fan on
This setting remains active when you scroll to the next setting.
0 = changeover valve off
NA 4 4 O/B changeover valve 1 = changeover valve on
This setting remains active when you scroll to the next setting.
0 = TOD/Economizer off
NA NA 5 TOD/Economizer system 1 = TOD/Economizer on
This setting remains active when you scroll to the next setting.
0 = Auxiliary heat and fan turns off
NA 5 NA Auxiliary Heat 1 = Auxiliary heat and fan turns off
This setting remains active when you scroll to the next setting.
0 = Emergency relay, fan, and terminal L output turn off
NA 6 NA Emergency Heat 1 = Emergency relay, fan, and terminal L output turn on
This setting remains active when you scroll to the next setting.
0 = full segment on
1 = odd segments on; even segments off
5 8 6 LCD segments
2 = even segments on; odd segments off
This setting is deactivated when you scroll to the next setting.
0 = show temperature reading in Fahrenheit
Remote thermistor (S1 & S2)
NA NA 7 1 = show temperature reading in Celsius
temperature reading
This setting is deactivated when you scroll to the next setting.
0 = show temperature reading in Fahrenheit
1 = show temperature reading in Celsius
Internal thermistor
4 7 8 This setting is deactivated when you scroll to the next setting for
temperature reading
the 3H/2C and programmable thermostats, but it remains active
when you scroll to the next setting for the 1H/1C thermostat.
Show major software revision number.
6 9 9 Major software version
This setting is deactivated when you scroll to the next setting.
Show minor software version.
7 10 10 Minor software version
This setting is deactivated when you scroll to the next setting.
0 = do not run power up test on self-test exit
8 11 11 Power up test 1 = run power up test on self-test exit
This setting retained (and applied) upon exit from self-test mode.
(a) Only values 0 and 1 are available because there are only one heat and one cool stage.

BAS-SVX36D-EN 43
Troubleshooting

Troubleshooting Table
Use Table 12 to diagnose and solve problems you may encounter.

Table 12.Troubleshooting
Problem Solution

• For non-programmable thermostats and programmable thermostats set to use internal

temperature sensor (configuration option #210 set to 0, 1, or 2):
Thermistor is defective or local temperature is out of range. Replace or repair thermostat
Error code E0 -
through a qualified Trane supplier.
Thermistor error. • For programmable thermostats with configuration option #210 set to 3:
Check the sensor terminals S1 and S2 for secure connection. If wires are securely connected,
try replacing the sensor.

Error code E4 - Input • Check the input voltage to the thermostat. It must be within the range of 18Vac to 32 Vac rms.
voltage out of range

• Cycle the power to the thermostat.

Error codes E3, E5, or E7 • If it does not recover to normal operation, have it serviced or replaced by a qualified Trane
supplier.

• Check the power supply.

Blank display • If the power supply is ok, have the thermostat serviced or replaced by a qualified Trane
supplier.

• Check the power supply.

• Check the frequency configuration (Configuration option #210 for the programmable
Erratic display thermostat or #11 for non-programmable thermostats) to make sure that you are using the
appearance or contrast correct frequency setting for your power supply.
• If the power supply and frequency setting are ok, have the thermostat serviced or replaced
by a qualified Trane supplier.

• Make sure the thermostat modes are not locked. See “Locking or Unlocking Modes,” p. 38.
• Cycle the power to the thermostat.
Buttons do not respond
• If the modes are not locked and cycling the power do not solve the problem, have the
thermostat serviced or replaced by a qualified Trane supplier.

• Temperature is outside of the measurable range. The temperature reading should be correct
“--F” or “--C” flashes
when the temperature is within the measurable range.

• Check the system status. If the status is Off, the fan settings will not appear.
Fan settings are not • Check the configuration options to verify that the fan is enabled: 
visible For programmable thermostats, check options 0130 and 0151;
For non-programmable thermostats, check options 01 and 03.

44 BAS-SVX36D-EN
Thermostat Specifications

Table 13.Specifications
Programmable Thermostat Non-Programmable Thermostats

24Vac, 50Hz or 60Hz 24Vac, 50Hz or 60Hz

(18Vac to 32Vac) (18Vac to 32Vac)
Input power
(Power supply frequency selected using (Power supply frequency selected using
installation configuration option #190) installation configuration option #11)

Wire size 18 to 22 AWG 18 to 22 AWG

Output terminal ratings 1A @ 30Vac 1A@ 30Vac

Indoor temperature
+15 to +122°F (–9.5 to +50°C) +32 to +99°F (0 to +37°C)
display range

Outdoor (remote)
temperature display –31 to +122°F (–35 to +50°C) NA
range

Storage temperature –40 to +158°F (–40 to +70°C) –40 to +158°F (–40 to +70°C)

±1.4°F (±0.8°C) over a range of ±1.4°F (±0.8°C) over a range of 50 to 90 °F

Accuracy
50 to 90 °F (10 to 32.2°C) (10 to 32.2°C)

Configurable: 1.0°F, 0.5°F, 1°C, 0.5°C,

Resolution Configurable: 1.0°F, 0.5°F, 1°C, 0.5°C, 0.1°C
0.1°C

Power consumption < 1VA < 1VA

Polycarbonate/ABS blend, UV protected, Polycarbonate/ABS blend, UV protected, UL 94-

Housing materials and
UL 94-5VA flammability rating, suitable for 5VA flammability rating, suitable for application in
rating information
application in a plenum. a plenum.

3.24 in (8.26 cm) for two mounting screws 3.24 in (8.26 cm) for two mounting screws
Mounting
(supplied) (supplied)

BAS-SVX36D-EN 45
Trane - by Trane Technologies (NYSE: TT), a global climate innovator - creates comfortable, energy
efficient indoor environments for commercial and residential applications. For more information,
please visit trane.com or tranetechnologies.com.
Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without
notice. We are committed to using environmentally conscious print practices.

BAS-SVX36D-EN 09 Apr 2020

Supersedes BAS-SVX36C-EN (Mar 2012) ©2020 Trane