S er v ice M a nua l

Split System Air

Conditioner
Model: ACE-G300LH

by Nemko

DAEWOO ELECTRONICS CO., LTD.

130
 Model ACE-G300LH

Power supply Ph-V-Hz 1, 220-240V~, 50Hz

12000
Capacity Btu/h
1350
Input W
Cooling
6.0
Rated current A
EER Btu/w.h 8.9
13500
Capacity Btu
1300
Input
Heating
A 5.8
Rated current
COP Btu/w.h 10.4
Moisture Removal L/h 1.2
1800
Max. input consumption W

Max. current A 7.8

Starting current A

Model PG225X2C-4FT
Rotary
Type
TOSHIBA
Brand

Capacity Btu/h 13550/13700

Input W 1290/1335
Compressor
Rated current(RLA) A 6.1

Locked rotor Amp(LRA) A 31

Thermal protector UP3RE0591-T56

Capacitor uF 35
Refrigerant oil ml 480
RPG20D
Model
49.2
Input W
Indoor fan motor
1.5
Capacitor uF
Speed(hi/mi/lo) r/min 1060/900/800
580/550/520
Indoor air flow (Hi/Mi/Lo) m3/h
36/32/29
Indoor noise level (Hi/Mi/Lo) dB(A)
815X280X195
Dimension (W*H*D) mm
Indoor unit 915X360X275
Packing (W*H*D) mm
Net/Gross weight Kg 10.5/13.5
YDK24-6H
Model

Outdoor fan motor

Input W 85
Capacitor uF 2.5
Speed r/min 850
Outdoor air flow m3/h 2100
53
Outdoor noise level dB(A)

Dimension(W*H*D) mm 780X540X250
Outdoor unit Packing (W*H*D) mm 910X575X335
Net/Gross weight Kg 36/40
730
Refrigerant type R407C g
2.8
Design pressure MPa

Liquid side/ Gas side mm(inch) Ф6.35/Ф12.7

Refrigerant piping
Max. refrigerant pipe length m 10
Max. difference in level m 5
Plug type 16A

Thermostat type Electronic control

Operation temp ℃
17-30
Ambient temp ℃ 17-45

Application area m2 18-26

★1 The noise date is base on anechoic chamber, during actual operation, these values are normally somewhat different as a result of ambient
condition.
3.Dimensions
3.1 Indoor unit
MSG-05/07/09C(H)R(N2),MSG-12C(H)R

3.2 Indoor unit

280
3.5 Outdoor unit

3.6 Outdoor unit MSG-18/21C(H)R(N2)

12. 5
4.Refrigeration cycle diagram
4.1 Cooling/heating
Indoor unit outdoor unit

Valve

Sensor of room temp

. 4 way valve

Heat exchanger Heat exchanger

Sensor of heat exchanger temp

Compressor

Valve Capillary

4.2 Cooling only

Indoor unit outdoor unit

Valve

Sensor of room temp

Heat exchanger Heat exchanger

Sensor of heat exchanger temp

Compressor

Valve Capillary
5.Operation limits
5.1Cooling operation
Outdoor unit air temp.℃ DB
45

DRY COOLING
40

35

30

25

20

10 15 20 25 30 35 40
Indoor air temp. ℃ DB
Note : The chart is the result from the continuous operation under constant air
temperature
conditions. However, excludes the initial pull-down stage.

5.2Heating operation
Indoor air temp. ℃ DB

30

25

20

15

10

-5 5 15 25
Outdoor unit air temp.℃ DB
Note : The chart is the result from the continuous operation under constant air
temperature conditions. However, excludes the initial pull-down stage.
6.2.2 ACE-G300LH
7.Troubleshooting
7.1 For all cooling only model
Failure phenomenon Operation lamp Timer lamp
Indoor fan speed has been out of control for over 1 minute ☆ X
Indoor room temp. or evaporator sensor is open circuit or short
☆ On
circuit
Over current protection of the compressor occurs 4 times X ☆
EEROM error On ☆
No over-zero signal ☆ ☆

 Extinguish
☆ Flash at 5Hz
7.2 For all heat pump model
Failure phenomenon Operation lamp Timer lamp Defrosting lamp
Over current protection of the compressor occurs 4 times ☆ X ☆
Indoor fan speed has been out of control for over 1 minute X ☆ ☆
No over-zero signal ☆ ☆ ☆
Temp. sensor on indoor evaporator is open circuit or short circuit X X ☆
Indoor room temp. sensor is open circuit or short circuit X ☆ X
EEROM error On ☆ X

 Extinguish
☆ Flash at 5Hz

8 Electronic function
8.1 Electric Control working environment
8.1.1 input voltage: 175~253V
8.1.2 Input power frequency:50Hz
8.1.3 Ambient temperature: -7C~+43C
8.1.4 Indoor fan normal working amp is less than 1A,
8.1.5 Outdoor fan. Normal working amp is less than 1.5A
8.1.6 Four-way valve normal working amp is less than 1A.
8.1.7 Swing motor: DC12V.
8.1.8 Compressor: single-phase power supply. Its normal working amp is less than 15A
8.2 Proper symbols and their meanings:
TA: Indoor ambient temperature
TE: Indoor evaporator temperature
TS: Setting temperature through the remote controller
I3sec: Self-protection amp of compressor, continue three seconds until turns off the
compressor.
I5MIN: Self-protection amp of compressor, continue five minutes until turns off the
compressor.
IFAN: Self-protection amp of outdoor fan/indoor fans when they change from higher wind
to lower wind.
IRESTORE: Amp self-protection return value
THDEFROST: High wind, defrosting temperature difference
TMDEFROST: Middle wind, defrosting temperature difference
TLDEFROST: Low wind, defrosting temperature difference
TE1: Anti-cold wind, from Fan Off to Breeze temperature
TE2: Anti-cold wind, from Breeze to Setting Fan Speed temperature
TE3: Anti-cold wind, from Setting Fan Speed to Breeze temperature
TE4: Anti-cold wind, from Breeze to Fan Off temperature
TE5: Evaporator low temperature protection entering temperature
TE6: Evaporator low temperature protection restoring temperature
TE7: Evaporator high temperature protection, compressor off temperature
TE8: Evaporator high temperature protection, fan off temperature
 TE9: Evaporator high temperature protection, restoring temperature

8.3 Systematic functions

Remote receiving
Testing and forced run
Position set for indoor unit wind vane
LED displaying and alarm
On or off Timer
Protection for the compressor
Current protection
High temperature protection of indoor heat exchanger at heating mode
Auto defrosting and heating recovery at heating mode
Anti cold air at heating mode
Anti frozen at heating mode
8.4 Protection
8.4.1 The compressor functions protection with a delay of three minutes.
8.4.2 Sensor protection at open circuit and breaking disconnection
8.4.3 Temperature Fuse break protection
8.4.4 Fan Speed is out of control. When Indoor Fan Speed is too high(higher than High
Fan+300RPM)or too low(lower than 400RPM), the unit stops and LED displays
failure information and can’t returns to normal operation automatically.
8.4.5 Cross Zero signal error warning. If there is no Cross Zero signals in 4 minutes, the
unit stops and LED displays failure information and can’t returns to normal operation
automatically.
8.4.6 The current protection of the compressor
Condition Indoor fan Compressor Outdoor fan Remark
Current up I< IRESTORE On On On

IRESTORE <I< IFAN On On Off Heating mode

Low speed On On Cooling mode

IFAN <I<I5MIN Off Off After 5 Minutes

I5MIN<I< I3SEC Off Off After 3 Seconds

Current down I5MIN<I< I3SEC Off Off After 3 Seconds

IFAN <I<I5MIN Off Off After 5 Minutes

IRESTORE <I< IFAN On On Off Heating mode

Low speed On On Cooling mode

I< IRESTORE On On On
If compressor turns off for continuously 4 times due to current protection in 5
minutes from Compressor On, the unit stops and LED displays failure information
and can’t returns to normal operation automatically.

8.5 Fan-only mode

Fan speed is high/mid/low/ Auto
8.6 Cooling mode
The 4-way valve is closed at cooling mode.
 The action of the compressor and the outdoor fan:
Condition Compressor Outdoor fan
Temp. up T> Ts+1 On On
T<Ts+1 Off Off
Temp. down T> Ts On On
T<Ts Off Off

Auto fan at cooling mode:

Condition Indoor fan speed
T=Indoor Temp.-Setting Temp.
Temp. up T<3℃ Low
3℃<T<5℃ Med.

T>5℃ High
Temp. down T> 3℃ High

1℃<T<3℃ Med.

T<1℃ Low

Anti-freezing control to indoor evaporator at cooling mode( T: evaporator temp. )

Condition Compressor Outdoor fan
Temp. Time
Temp. up T> TE6 On On
T< TE6 >5 Minutes Off Off
Temp. down T> TE5 On On
T< TE5 >5 Minutes Off Off

8.7 Dehumidifying mode

8.7.1 The 4-way valve is off in dehumidifying mode
8.7.2 Compressor and Indoor Fan actions in dehumidifying mode
NO Conditions Indoor Fan Compressor and Outdoor Fan
LOW ON 6minutes
1 TA ≥ TS+2
BREEZE OFF 4minutes
LOW ON 5minutes
2 TS ≤TA＜TS+2 BREEZE OFF 5minutes
LOW ON 4minutes
3 TA ＜ TS OFF 6minutes
BREEZE
Repeat on and off cycle.
8.7.3 Low room temperature protection:
When room temperature decreases to below 10℃, compressor and outdoor fan
will stop(indoor fan is Breeze). Dehumidifying operation will be resumed when
room temperature restores to over 13℃.
8.7.4 At dehumidifying mode, the anti-freezing function of the indoor heat exchanger is
the same as that of cooling mode.
8.7.5 At dehumidifying mode, the action of fans of indoor is the same as that of air-only
mode.
8.8 Heating mode
8.8.1 Generally, the 4-way valve is open in heating mode, but it is closed in defrosting
mode. 4-way valve must delay 2 minutes compared with compressor if the
compressor changed into non-heating mode or turned off. 4-way valve doesn't
delay in dehumidifying mode.
8.8.2 Generally, the outdoor fan is turned off with the on-off action of compressor in
heating mode, except for the defrosting mode or the end of defrost.
8.8.3 Action of compressor and outdoor fan motor at heating mode: compressor must
run for 7 minutes after starting and then judge temperature. Meanwhile other
protections are still valid.
Condition Compressor Outdoor fan
Room temp. up T> Ts+3 Off Off

T<Ts+3 On On
Room temp. down T< Ts+2 On On

T>Ts+2 Off Off

8.8.4 Indoor Fan actions at heating mode

Indoor Fan can be set at HIGH/MID/LOW/AUTO by using a remote controller, but
Anti-cold wind function prevails.
Anti-cold wind control function at heating mode
Condition Indoor fan speed
T= Indoor exchanger temp.
Indoor exchanger temp. up T<TE1 Off

TE1<T<TE2 Breeze

T>TE2 Setting fan speed

Indoor exchanger temp. down T> TE3 Setting fan speed

TE3<T<TE4 Breeze

T<TE4 Off
8.8.5 Auto wind at heating mode
Condition Indoor fan speed
T=Indoor Temp.-Setting Temp.
Room temp. up T<2℃ High

T>2℃ Med.
Room temp. down T> 0℃ Med.

T<0℃ High
8.8.6 Indoor evaporator high-temperature protection at heating mode
Condition Compressor Outdoor fan
T= Indoor exchanger temp.
Indoor exchanger temp. up T<TE8 On On

TE8<T<TE7 On Off

T>TE7 Off Off

Indoor exchanger temp. down T>TE9 Off Off

T<TE9 On On
8.8.7. The louver opens to Standard Angle ANGLHEAT when power is on for the first time
8.9 Defrosting operation (Available for heating only).
8.9.1 Defrosting condition: Defrosting starts when either of the following ①&②:
① A and B are satisfied:
A: The compressor keeps running for 40 minutes or more.
B: The temperature difference of evaporator and room temperature meets one of
the following:
Temp. of evaporator---room temp.
℃
Fan speed is high ≤THDEFROST
Fan speed is mid ≤TMDEFROST
Fan speed is low ≤TLDEFROST
Breeze Meet only if it is Breeze

② Calculate from the end of latest defrost, evaporator high temp. protection only
closes outdoor fan with the compressor still running. Add up to 90 minutes.
8.9.2 Defrosting time
If the temp. difference condition ① is satisfied for less than 40 minutes, this can be
regarded as severe frosting. The defrosting time is 10 minutes.
If the temp. difference condition ② is satisfied for more than 40 minutes, the
defrosting time is 6 minutes.
If the temp. difference condition ① is satisfied out of 40 minutes, generally the
defrosting time is 6 minutes, after three continuous 6-minute defrost, the fourth
should be 10 minutes defrost. The circulation is as following:
→6-minute defrost → 6-minute defrost→6-minute defrost→10-minute
defrost→

8.9.3 Ending condition of defrosting

If one of following conditions is satisfied, end the defrost and turn into heating
mode:
A. The defrost time has reached to 6 or 10 minutes.
B. The compressor current has reached to IDEFROST or above, IDEROST differs in
different models.
8.9.4 Defrosting Actions:

Defrost 10or 6minutes

45S 25S
Compressor

4-way Valve 23S

40S
Outdoor Fan

Indoor Fan

10S

8.9.7 Turn into heating mode, turn off the heating mode in 7 minutes.

8.10 Automatic operation mode

8.10.1 The air conditioner automatically selects one of the following operation modes:
cooling, heating or fan only according to the temp. difference between room temp.
(TA) and set temp. (TS).
TA—TS Operation mode
TA—TS>2℃ Cooling
-1℃≤TA—TS≤+2℃ Fan-only
TA—TS<-1℃ Heating (air-only for cooling only type)
8.10.2 The indoor fan blows automatically in corresponding selected mode.
8.10.3 The motion of indoor fan’s blade should accord with the selected operation mode.
8.10.4 One mode should be carried out for at least 15 minutes once selected. If the
compressor cannot start for 15 minutes, reselect the operation mode according to
the room temp. and set temp., or reselect when the set temp. varies.

8.11 Forced cooling function

8.11.1 Select forced cooling function with the forced cooling button or the switch.
8.11.2 The compressor is unconditionally turned on, after 30 minutes cooling operation
whose fan mode is set as low, the A/C operates at the DRY mode with a set temp.
of 24℃.
8.11.3 All protections of remote control cooling are available at forced cooling operation.
8.12 Forced Auto function
Select forced auto function with the forced auto button or the switch.
In forced auto status the A/C operates at remote control mode with a set temp. of
24℃.
8.13 Timer Function

8.14 Economic Running

8.14.1 The economic running function is available at cooling, heating or auto mode.
8.14.2 Cooling:
The set temperature rise 1℃ per hour. Two hours later, the set temperature will
maintain as a constant and the fan speed is kept at low speed.
8.14.3 Heating:
The set temperature decrease 1℃ per hour. Two hours later, the set temperature
will maintain as a constant and the air circulation is kept at low speed (Cold air
 proof function takes precedence over all).
8.14.4 Auto:
The economic running function operates in accordance with selected running mode by auto
mode.
8.15 Auto restart function
In case of a sudden power failure, this function automatically sets the unit to previous settings
before the power failure when power returns.
 Model

ACE-G300LH

I3SEC 14.5A

I5MIN 13.5A

IFAN 9.5A

IRESTORE 8.5A

IDEFROST 6.5A

TE1 34℃

TE2 37℃

TE3 33℃

TE4 22℃

TE5 2℃

TE6 7℃

TE7 62℃

TE8 56℃

TE9 50℃

ANGLCOOL 40°

ANGLHEAT 197°

ANGLOFF 100°

THDEFROSt 17C

TMDEFROSt 18C

TLDEFROSt 19C
 Exploded View Parts for Model ACE-G300LH 220--240V,50Hz : Indoor Unit

22

21
20
19

18 23
17

16
24
12
11 25
10
9
4
3 15
2 14
13
33 32
1 34 31
26
7 8
27
6
28 29
5 30

No. Part Name Quantity BOM code Remark

1 Front Panel 1 2113132307
2 Air Filter 2 2113132312
3 Screw cap 3 2113132323
4 Panel frame 1 2113132333
5 Air cleaner 1 2113010212
6 Display Panel 1 2113132311
7 Window for receiver 1 2113132310
8 Indicator for LED 1 2113132309
9 Horizontal louver 1 2113132335
10 Vertical louver 11 2113132336
11 Louver motor 1 2240020012
12 Air out frame 1 2113132334
13 Louver holder 1 2113132337
Louver rocker 2 2113132338
14
Rocker gasket 2 2273010203
15 Drain hose 1 2110102007
16 Left holder for evaporator 1 2113132306
17 Evaporator 1 2153139003
18 Waterproof board 1 2113051509
19 Bearing holder 1 2273010201
20 Cross flow fan, assy 1 2110020008
21 Chassis 1 2113132302
22 Installation Plate 1 2123050006
23 Connecting pipe clamp 1 2113010204
24 Fan motor 1 2240030213
25 Motor cover 1 2113132321
26 Remote Controller 1 2335509007
27 Holder, Remote Controller 1 2115501001
28 Wire joint, 5p 1 2230145064
29 Wire clamp 1 2113010209
30 Display board 1 2333139008
31 Main control board 1 2133139008
32 E-Parts Box 1 2113139803
33 Transformer 1 2230090029
34 E-part box cover 1 2113139036
35 Indoor temp sensor 1 2243069052
36 Evaporator temp sensor 1 2243069051
No. Part Name Quantity BOM code
1 Front Panel 1 2113132307
2 Air Filter 2 2113132312
3 Screw cap 3 2113132323
4 Panel frame 1 2113132333
5 Air cleaner 1 2113010212
6 Display Panel 1 2113132311
7 Window for receiver 1 2113132310
8 Indicator for LED 1 2113132309
9 Horizontal louver 1 2113132335
10 Vertical louver 11 2113132336
11 Louver motor 1 2240020012
12 Air out frame 1 2113132334
13 Louver holder 1 2113132337
Louver rocker 2 2113132338
14
Rocker gasket 2 2273010203
15 Drain hose 1 2110102007
16 Left holder for evaporator 1 2113132306
17 Evaporator 1 2153139003
18 Waterproof board 1 2113051509
19 Bearing holder 1 2273010201
20 Cross flow fan, assy 1 2110020008
21 Chassis 1 2113132302
22 Installation Plate 1 2123050006
23 Connecting pipe clamp 1 2113010204
24 Fan motor 1 2240030213
25 Motor cover 1 2113132321
26 Remote Controller 1 2335509007
27 Holder, Remote Controller 1 2115501001
28 Wire joint, 5p 1 2230145064
29 Wire clamp 1 2113010209
30 Display board 1 2333139008
31 Main control board 1 2133139008
32 E-Parts Box 1 2113139803
33 Transformer 1 2230090029
34 E-part box cover 1 2113139036
35 Indoor temp sensor 1 2243069052
36 Evaporator temp sensor 1 2243069051