ON OFF/ MODE
FA N
C LOCK TIMER ON
X-F AN T EMP TIMER OF F
T URBO SLEEP LIGH T
34 34
34 34
CFM 7 7
14.2 1 2/9.8
1 1W H D 4 0 4 0
9 8 9 8
0 0
W H D 5 22.8 14.2 5 22.8 14.2l 96 110 96 110
16 16oz/ft 0.1613 0.2150
33 3366 66
6 960
6 960
12.5 12.5/9.6
1 1W H D 4 0 4 0
lb. 29/38 9/38
3 3
W H D 5 22.8 14.2 5 22.8 14.2l 107 118 107 118
5.5 5.516 16
oz/ft 0.1613 0.1613
33 3366 66
6 6
6 6
12.5 12.5
1 1W H D 4 0 4 0
l 9 8 9 8
CFM
3 3
W H D 5 22.8 14.2 5 22.8 14.2l 107/118 107/118
5.5 5.516 16
oz/ft 0.1613 0.1613
33 3366 66
0
2
4
6
8
10
12
14
16
18
20
09K
12K
0 10 20 30 40 50 60 70 80 90
Compressor speed (rps)
Cur
rent
(A)
0
2
4
6
8
10
12
14
16
18
20
0 10 20 30 40 50 60 70 80 90 100
Compressor speed (rps)
Cur
rent
(A)
09K
12K
ConditionIndoor:DB80 F WB67 FIndoor air flow: TURBOPipe length: 16ft.
O O
ConditionIndoor:DB70 FIndoor air flow:TURBOPipe length: 16ft.
O
0
2
4
6
8
0 15 20 30 40 50 60 70 80 900
2
4
6
8
0 15 20 30 40 50 60 70 80 90 100
12K12K
ConditionIndoor:DB80 F WB67 FIndoor air flow: TURBOPipe length: 16ft.
O O
ConditionIndoor:DB70 FIndoor air flow:TURBOPipe length: 16ft.
O
Compressor speed (rps) Compressor speed (rps)
Cur
rent
(A)
Cur
rent
(A)
40
30
20
Indoor side noise when blowing
Outdoor side noise
Indoor fan motor rotating speed
Low Middle High
Compressor frequency/Hz
35
25
Turbo
Noi
se/d
B(A
)
Noi
se/d
B(A
)
80 1006040200
70
60
50
40
30
89.60
20
40
60
80
100
120
91.4 93.2 95 96.8 98.6 100.4 102.2 104 105.8 107.6 109.4 111.2 113
0
20
40
60
80
100
120
5 8.6 11 12.2 19.4 23 26.6 30.2 33.8 37.4 41 44.6 48.2 51.8
09K
12K
09K
12K
40
30
20
Indoor side noise when blowing
Outdoor side noise
Indoor fan motor rotating speed
Low Middle High
Compressor frequency/Hz
35
25
Turbo
Noi
se/d
B(A
)
Noi
se/d
B(A
)
20
70
60
50
40
30
80 1006040200
TINU ROODTUOTINU ROODNI
HEATEXCHANGE(EVAPORATOR)
HEATEXCHANGE(CONDENSER)
COMPRESSOR
GAS SIDE
3-WAY VALVE
LIQUID SIDE
2-WAY VALVE
COOLING
Accumlator
Discharge
Suction
Muffler
Electronic Expansion Valve Strainer
TINU ROODTUOTINU ROODNI
HEATEXCHANGE(EVAPORATOR)
HEATEXCHANGE(CONDENSER)
COMPRESSOR
GAS SIDE
3-WAY VALVE
LIQUID SIDE
2-WAY VALVE
COOLINGHEATING
Accumlator
Discharge
Suction
Muffler4-Way valve
Strainer Electronic Expansion Valve Strainer
L-OUT
L1
L1
0 0
RT1 RT2
M2
JUMP
CAP
TEM.SENSORROOM TUBE
TEM.SENSOR
FAN MOTOR SWING MOTOR(U.D)
AP2
SWING-UD
K4
TUBEROOM
AC-L
PGPGF TR_OUT TR_IN
TC
TRANSFORMER
13
DISPLAYAP1
CN1 CN2
DISP2DISP1
M1
GG
XT1W4 BU
W3 BN
N(1)
OUTD
OOR
UNIT2
3COM-OUT
W1 YEGNW2 YEGN
NW5 BK
III
ELECTRIC BOXEVAPORATOR
COMP
M
RT500
RT40
RT3
OUTROOM EXHAUSTOUTTUBE
OFAN
E OVERHEAT
R E
CS
U V W
CT1,2
AP1
W 3 YEGN W10 RD
COMP
W8 YEGN
FAN MOTOR
W5 BU W 6 YE W7 BK
AC-N1
AC-L1
COMU
EKV
CN1
TEM.SENSOROUTROOM EXHUAST
TEM.SENSORTEM.SENSORTUBE
W 2 BU
W1 BN
W4 BK
GGI
NDOOR
UNIT
W13 YEGN
POWER
N
L
L
N
N(1)
3
2
L2L2L2
L1
L1
G
G
G
W15 BU
W14 BN
W16 WH
W17 RD
G
L4
L4
W23 OGW20 BU
W22 WH
W21 BN
AC-L2 AC-L4AC-N5AC-N3 AC-N4 AC-L2AC-L3
W19 BU W24 RD
W 18 YEGN
XT2
34
E21
FILTER
C4C3212
1
4YV
RT500
RT40
RT3
OUTROOM EXHAUSTOUTTUBE
OFAN
E OVERHEAT
R E
CS
U V W
CT1,2
AP1
W3YEGN W10 RD
COMP
W8 YEGN
FAN MOTOR
W5 BU W 6 YE W 7 BK
AC-N1
AC-L1
4V AC-N2
COMU
EKV
CN1
TEM.SENSOROUTROOM EXHUAST
TEM.SENSORTEM.SENSORTUBE
W2 BU
W1 BN
W4 BK
GGI
NDOOR
UNIT
W13 YEGN
POWER
N
L
L
N
N(1)
3
2
L2L2L2
L1
L1
G
G
G
W15 BU
W14 BN
W16 WH
W17 RD
G
L4
L4
W23 OGW20 BU
W22 WH
W21 BN
AC-L2 AC-L4AC-N5AC-N3AC-N4 AC-L2AC-L3
W19 BU W24 RD
W18 YEGN
COMP
M
XT2
34
E21
FILTER
C4C3212
1
4YV
RT500
RT40
RT3
OUTROOM EXHAUSTOUTTUBE
OFAN
E
OVERHEAT
R E
CS
U V W
CT1,2
AP1
W3YEGN
W10 RD
COMP
W8 YEGN
FAN MOTOR
W5 BU W6 YE W 7 BK
N1
AC-L1
4V AC-L2 AC-L3 N2 N3
L
COMU
W9 BU
W11 OG W12 WH
EKV
CN1
TEM.SENSOROUTROOM EXHUAST
TEM.SENSORTEM.SENSORTUBE
W2 BU
W1 BN
W4 BK
GG
INDOOR
UNIT
W13 YEGN
POWER
L1
L
N
N(1)
3
2
L2L2L2
L1
L1
G
G
G
W15 BU
W14 BN
L1
L2
G
COMP
M
XT2
COMP
M
RT500
RT40
RT3
OUTROOM EXHAUSTOUTTUBE
OFAN
E
OVERHEAT
R E
CS
U V W
CT1,2
AP1
W3YEGN
W10 RD
COMP
W8 YEGN
FAN MOTOR
W5 BU W 6 YE W 7 BK
N1
AC-L1
AC-L2 AC-L3 N2 N3
L
COMU
W 9 BU
W11 OG W12 WH
EKV
CN1
TEM.SENSOROUTROOM EXHUAST
TEM.SENSORTEM.SENSORTUBE
W2 BU
W1 BN
W4 BK
GG
INDOOR
UNIT
W13 YEGN
POWER
L1
L
N
N(1)
3
2
L2L2L2
L1
L1
G
G
G
W15 BU
W14 BN
L1
L2
G
XT2
1 2 3 4 5 6
7
8
9
10
11
12
1
2
3
4
7
5
68 9 10 11 12
13
14
15
16
171819202122
22
21
20
19
18
17 16 1514 13
1211
109
8
7654321
1
7
8
4
3
5
6
11
13
12
16
17
18
10
14
9
15
2
2
8
9
10
34
11
12
7
6
13 14
5
1
ON/OFFPress it to start or stop operation.MODEPress it to select operation mode (AUTO/COOL/DRY/FAN/HEAT).+Press it to increase temperature setting.-Press it to decrease temperature setting.FANPress it to set fan speed.
Press it to set swing angle.TIMER ONPress it to set auto-on timer.TIMER OFFPress it to set auto-off timer.CLOCKPress it to set clock.
X-FAN(X-FAN is the alternative expression of BLOW for the purpose
of understanding.)
TEMPTURBOSLEEPLIGHTPress it to turn on/off the light.
17
15
18 19
1620
21
23
24
22
25
MODE icon:If MODE button is pressed, current operation mode icon (AUTO), ( COOL), (DRY), (FAN) or (HEAT is only for heat pump models) will show.SLEEP icon : is displayed by pressing the SLEEP button. Press this button again to clear the display.TEMP icon:Pressing TEMP button, (set temperature), (indoor ambient temperature), (outdoor ambient temperature) and blank is displayed circularly.Up & down swing icon: is displayed when pressing the up & down swing button. Press this button again to clear the display.
20
21
22
23
24
25
1
2
3
4
5
6
19 LIGHT icon: is displayed by pressing the LIGHT button.Press LIGHT button again to clear the display.LOCK icon: is displayed by pressing "+" and “-” buttons simultaneously.Press them again to clear the display.SET TIME display:After pressing TIMER button, ON or OFF will blink.This area will show the set time.TURBO icon: is displayed when pressing theTURBO button.Press this button again to clear the display.DIGITAL display:This area will show the set temperature. In SAVE mode,"SE" will be displayed. During defrosting operation, “H1” will be displayed.X-FAN icon: is displayed when pressing the X-FAN button. Press this button again to clear the display.FAN SPEED display:Press FAN button to select the desired fan speed setting(AUTO Low-Med-High).Your selection will be displayed in the LCD windows,except the AUTO fan speed.
ON/OFF:Press this button to turn on the unit. Press this button again to turn off the unit.MODE:Each time you press this button,a mode is selected in a sequence that goes from AUTO, COOL,DRY, FAN, and HEAT *, as the following:
*Note: Only for models with heating function.After energization, AUTO mode is defaulted. In AUTO mode, the set temperature will not be displayed on the LCD, and the unit will automatically select the suitable operation mode in accordance with the room temperature to make indoor room comfortable.+ :Press this button to increase set temperature. Hold it down for above 2 seconds to rapidly increase set temperature. In AUTO mode, set temperature is not adjustable.-:Press this button to decrease set temperature. Hold it down for above . 2 seconds to rapidly decrease set temperature. In AUTO mode, set temperature is not adjustable.FAN :This button is used for setting fan speed in the sequence that goes from AUTO, , , to then back to Auto.
Press this button to set up & down swing angle, which circularly changes as below:
This remote controller is universal. If any command , or is sent out, the unit will carry out the command as indicates the guide louver swings as:
AUTO
COOL DRY FAN HEAT*AUTO
Low speed Medium speed High speed
OFF
8
9
10
11
12
13
14
15
16
7 TIMER ON:Press this button to initiate the auto-ON timer. To cancel the auto-timer program, simply press this button again. After pressing this button, disappears and "ON" blinks . 0 0:00 is displayed for ON time setting. Within 5 seconds, press + or - button to adjust the time value. Every press of either button changes the time setting by 1 minute. Holding down either button rapidly changes the time setting by 1 minute and then 10 minutes. Within 5 seconds after setting, press TIMER ON button to confirm.TIMER OFF:Press this button to initiate the auto-off timer. To cancel the auto-timer program, simply press the button again.TIMER OFF setting is the same as TIMER ON.CLOCK :Pressing CLOCK button, blinks. Within 5 seconds, pressing + or - button adjusts the present time. Holding down either button above 2 seconds increases or decreases the time by 1 minute every 0.5 second and then by 10 minutes every 0.5 second. During blinking after setting, press CLOCK button again to confirm the setting, and then will be constantly displayed.X-FAN:Pressing X -FAN button in COOL or DRY mode,the icon is displayed and the indoor fan will continue operation for 10 minutes in order to dry the indoor unit even though you have turned off the unit.After energization, X-FAN OFF is defaulted. X-FAN is not available in AUTO, FAN or HEAT mode.TEMP:Press this button, could select displaying the indoor setting temperature or indoor ambient temperature.When the indoor unit firstly power on it will display the setting temperature, if the temperature's displaying status is changed from other status to" ",displays the ambient temperature, 5s later or within 5s, it receives other remote control signal that will return to display the setting tempera-ture. if the users haven't set up the temperature displaying status,that will display the setting temperature.TURBO:Press this button to activate / deactivate the Turbo function which enables the unit to reach the preset temperature in the shortest time. In COOL mode, the unit will blow strong cooling air at super high fan speed. In HEAT mode, the unit will blow strong heating airat super high fan speed. SLEEP:Press this button to go into the SLEEP operation mode. Press it again to cancel this function. This function is available in COOL, HEAT (Only for models with heating function) or DRY mode to maintain the most comfortable temperature for you.LIGHT:Press LIGHT button to turn on the display's light and press this button again to turn off the display's light. If the light is turned on , is displayed. If the light is tunrned off, disappears.Combination of "+" and "-" buttons: About lockPress "+ " and "-" buttons simultaneously to lock or unlock the keypad. If the remote controller is locked, is displayed. In this case, pressing any button, blinks three times.Combination of "MODE" and "-" buttons:About switch between Fahrenheit and Centigrade At unit OFF, press "MODE" and "- " buttons simultaneously to switch between ℃ and ℉.
Replacement of Batteries1.Remove the battery cover plate from the rear of the remote controller.(As shown in the figure)2.Take out the old batteries.3.Insert two new AAA1.5V dry batteries, and pay attention to the polarity.4. Reinstall the battery cover plate.★Notes:●When replacing the batteries, do not use old or different types of batteries. Otherwise, it may cause malfunction.●If the remote controller will not be used for a long time, please remove batteries to prevent batteries from leaking.●The operation should be performed in its receiving range.●It should be kept 3.3ft. away from the TV set or stereo sound sets.●If the remote controller does not operate normally, please take thebatteries out and reinsert them after 30 seconds. If it still can't operate properly, replace the batteries.
Sketch map forreplacing batteries
Freezerying
ryingry
rying
Start cooling
Stop cooling
Compressor
Original working state
Run Stop
Outdoor fan
Indoor fan
Tpreset
Tamb
6 minutes 6 minutes3 minutes
Tpreset-35.6 F
set fan speed
o
For 115V: frequency-decreasing protection when total current is increasing:When total current Itotal A, increase frequency is allowed; when total current Itotal B, increasing frequency is prohibited; when totalcurrent Itotal C, the unit operates by decreasing frequency. When total current Itotal D, the compressor stops operation, and indoorfan will stop operation after 30s.
For 230V: frequency-decreasing protection when total current is increasing:When total current Itotal A, increase frequency is allowed; when total current Itotal B, increasing frequency is prohibited; when totalcurrent Itotal C, the unit operates by decreasing frequency. When total current Itotal D, the compressor stops operation, and indoorfan will stop operation after 30s.
For 230V: frequency-decreasing protection when total current is increasing: When total current Itotal A, increase frequency is allowed; when total current Itotal B, increasing frequency is prohibited; when total current Itotal C, the unit operates by decreasing frequency. When total current Itotal D, the compressor stops operation, and indoor fan will stop operation after 30s.
For 115V: frequency-decreasing protection when total current is increasing:When total current Itotal A, increase frequency is allowed; when total current Itotal B, increasing frequency is prohibited; when totalcurrent Itotal C, the unit operates by decreasing frequency. When total current Itotal D, the compressor stops operation, and indoorfan will stop operation after 30s.
L1 A1 B1 C1 D1
L A B C D
Heating angle Cooling angle
O(0°) O(0°)
2
33 66
Space to the wall
Space to the ceiling
Space to the wall
Space to the wall
Air outlet sideAbove
5.9in. Above 5.9in. Above
11.8in. Above
19.7in. Above
19.7
in. A
bove
11.8i
n. Abo
ve
78.7in. Above
Above
Space to the obstruction
Air outlet side
Space to the wall
Air inlet side
The dimensions of the space necessary for correct installation of the appliance including the minimum permissible distances to adjacent structures
●
5.9in.
118.1in.
Indoor Outdoor Wall pipe
Seal pad
bulgedistortion
outlet pipe of indoor unit
insulating tubeconnected
insulating tube
drain hoseoutlet pipe of indoor unit
drain hose
outlet pipe of indoor unit
outlet pipe of indoor unit
rubber belt
rubber beltrubber belt
Flooded
Fig.2
Wiring Cover
outdoor unit connection
yellowgreenbrown
N(1)
black
2 3
blue
Ф2.2 in.
59.1ft.
Fig.1
Wall WallMark on the middle of it Gradienter
Left Right
(Rear piping hole) (Rear piping hole)
Space to the wall
above
Space to the wall
above
Ф2.2 in.
59.1ft.
Fig.5
Mountingplate
Fixing hook Mounting plate
Right
Right rear Fig.4Left rear
Left
Fig.3Tailing 1Tailing 2
Finally wrap itwith tape
Gas side pipinginsulation
Water drainage pipe
Liquid sidePiping insulation
Gas side pipeExternal connection
electric wireLiquid side piping
Spanner Torque wrench
PipingTaper nutIndoor unit piping
PowerIndoor unit connection
Indoor unit connection
blueyellow-green
black brown
Power
blueyellow-green
black brown
GL2L1
NL
GWH09MA-A3DNA1A/O/GWC09MA-A3DNA1A/OGWH12MB-A3DNA1A/O/GWC12MB-A3DNA1A/O
GWH12MB-D3DNA1A/O/GWC12MB-D3DNA1A/O
Fig.6
Manifold ValveMultimeter
-76cmHg
Lo Handle
Charging hose
Manometer
Hi handle
Vacuum pump
Low pressure valve
Drain-water holeBottom frame
Hose (available commercially,inner dia. 0.6in.)
Drain connecter
Fig. a
filter
Air filter
Fig. b
Fig. c
Healthy
2 3 4
1716
1514
1312
1110
8
7
2423
22
2019
1
6
5
9
18
36
34
35
33
32
31
30
29
28
21
3940
41
38
252726
37
42
1
2
3
4
5
6
7
8 9 10 11 12 13 14 15 16 17 18 19 20
21
22
23
24
25
26
27
28
29
32 31 30
8
2120
61 42 3 5 7
19
10
1211
13
15
1817
14
16
22
31
3029
28
27 26 25 24
9
23
7
2019
1 42 3 5 6
18
9
1110
12
14
1716
13
15
21
29
27
28
33
3231
30
26 25 24 23
8
22
23
9
24252627
31
3233
34
29
28
30
22
16
14
1718
15
13
1112
10
19
7532 41 6
2021
8
The remotecontroller doesnot receivesignals (after itis powered, thebuzzer willsound, unless ithasmalfunction)
Trip of breaker orblow of fuse
Air
cond
ition
er c
an n
otst
art u
p
Measure insulation resistanceto ground to see if there is anyleakage.
The circuit or the part of the airconditioner has malfunction.They heat and break the insula-tion and lead to short circuit orcreepage. Measure the insula-tion resistance or eliminate themalfunction one by one. If thebreaker itself has malfunction,then replace the breaker.
The transformer connection isloose or has bad contact or thetransformer has malfunction.
Fasten the wiring; measure theoutput voltage of the trans-former , if it is incorrect, changethe transformer.
No power Check power supply circuit.
Power plug is not well plugged inand poor connection.
Check if the plug is properlyplugged in and make the loosecontact firm.
Fuse of controller burnt out
The air condi-tioner does notreact after it ispowered ( afterthe plug isinserted, thebuzzer does notsound and theremote startuphas noresponse)
Remote controller malfunction
Receiver loose or poor connection
Receiver is broken
Change controller fuse
Controller is broken Check remote controller
Remote controller is short of power Change batteries
First, press the manual switchbutton AUTO,i f there is noresponse,check based on theabove methods. If it runs nor-mally after pressing the button,check again whether the instal-lation position and the connec-tion wire of the reception headis correct. If it is correct,then re-place the receiver or the remotecontroller.
Power voltage is too lowCheck the voltage. If it is lower than 10% ofthe rated voltage, check the cause, improvethe power supply condition and add the sta-bilized voltage power supply.
The breaker trips at once when itis set to “ON”.
The breaker trips in few minuteswhen it is set to “ON”.
Improper set of temperature Adjust set temperature
If cooling (heating) load isproper
Check the forecasted load of cooling (heating)
The refrigerant has leakage or isinsufficient
Check and f i l l the leakage, thenvacuumize it and supplement the re-frigerant as required
Leakage between the high pres-sure and the low pressure in-side the compressor
Replace the compressor
Malfunction of four-way valve Replace the four-way valve
Local block of capillary Replace the capillary
Blockage of cooling system
Judge whether the system is blocked byobserving the condensation of evapora-tor and the pressure value of the highpressure manometer and take measuresto deal with the system.
Malfunction ofr e f r i g e r a n tflow
Heat insulation for the connectionpipes of the indoor unit and the out-door unit is bad.
Make sure that heat insulation for the thick and thin pipesis good. Heat insulation must also be provided for thejoint andthe exposed part of the copper pipe .
Block of outdoor heat ex-changer
Clean the dust accumulated on the surface ofthe heat exchanger.
Air filter were blocked Clean the filter
Fan speed was set too slowTo set the fan speed to high ormiddle speedAir circulation
is insufficient
Fan rotation speed becomeslow
Capacitordamage
Motor damage
Replace the capaci-tor
Replace the motor
The installation position of theoutdoor unit is not appropriate.
Good ventilation must be provided for theinstallation position of the outdoor unit.
The outdoor temperature is too high. Properly install the rainproof plate or the sunproof plate. If themaximum cool air still can not meet the requirement, it is sug-gested to replace the air conditioner.
Keep certain air tightness indoors, try not to useelectricalappliance with large quantity of heat
The air tightness is not enough. Peoplecome in and out too frequently. Thereare heating devices indoors.
Poo
r CO
OL(
HE
AT) o
pera
tion
The indoor fan motor is burned orbreaks or has the heat protectormalfunction.
Replace the fan motor or the defective part.
Wrong connectionMake the correction connection based onthe circuit drawing.
The fan capacitor has open circuit oris damaged.
The fan does notrun when it is setto supply air.
Replace the fan capacitor of the same typeand same specification.
The outdoor fan motor is damaged. Replace the fan motor
Wrong connection Make the correct connection based on thecircuit drawing
The outdoor fan capacitor is damaged. Replace the fan capacitor
Malfunction of compressor Replace the compressor
Breakage of running capacitor ofcompressor Replace the capacitor
The voltage is too low or toohigh.
Manostat is recommended.
Wrong wire connection Connect the circuit diagram correctly
The built-in heat protector of themotor breaks frequently because themotor is abnormal.
Replace the fan motor
Adjust the volume of the refrigerantThe refrigerant is not enough or is toomuch.
Replace the capillaryThe capillary is blocked and the tem-perature rises.
The compressor does not runsmoothly or is stuck. The air dischargevalve is damaged
Replace the compressor
The protector itself has malfunction. Replace the protector
The compres-sor is too hotand leads to theaction of theprotector.
The protector itself has malfunction.Use the multimeter to check whether thecontact of the compressor is on when it isnot overheated. If it is not on, then replacethe protector
In the cooling andheating mode,the compressorruns, but the out-door fan does notrun.
In the coolingand heatingmode, theoutdoor fanruns, but thecompressordoes not run.
Adjust fan locationFan of indoor unit contacts other parts
Foreign object in indoor unit Take out the foreign object
Adjust support washer of compressor, andtighten loosen screws
Touch of pipeline of outdoor unit Separate the touching pipeline.Abnormal soundand shake
Touch of inner plates1. Tighten connect screw.2. Stick absorbing clay between plates.
Louver of outdoor unit touched outercase. Adjust location of louver.
Abnormal sound inside compressor Change compressor
Drainage pipe blocked or broken Change drainage pipe
Re-wrap and make it tight.Wrap of refrigerant pipe joint is notclose enough.
Water leakage
Change controller
Wire loose or wrong connection
In cool, heatmode, theoutdoor unitand compres-sor will not run.
Correctly wire according to the drawing
Improper setting of temperature Adjust setting temp.
Contro l ler mal funct ion ( IC2003broken, creepage of parallel capaci-tor of relay loop, relay is broken etc.)
First, check whether the connection iswrong. If no, replace the partsThe swing fan
does not run.
The torque of the swing motor is notenough
Wrong connection
The controller is damaged(IC2003 isdamaged, the swing relay can notclose, etc)
Compressor shakes too much
N
Y
N
Y
N
Y
N
Y
N
Y
Turn on the unit and wait 1 minute
Use DC voltmeter to measure the
voltage on the two ends of electrolytic
capacitor
Voltage higher than 200V?Fault with the voltage
testing circuit on control panel AP1
Replace the control panel AP1
Measure the AC voltage between terminal L and N on wiring board XT(power supply)
Voltage within 210VAC~250VAC?
Shut down the powerand repair the powersupply to restore therange210VAC~250VAC
power on andrestart the unit
If the fault is eliminated?
Shut down the power and wait 20 minutes; or use DC voltmeter to measure the voltage on the two ends of capacitor (test3), until the voltage is lower than 20V
Check the connection of reactor (L in the Electrical Wiring Diagram)
If the wiring of reactor L is normal?
Connect the reactor Laccording to Elec-trical Wiring Diagr-am correctly
Re-energize andturn on the unit
If the fault is eliminated?
End
Replace the control panel AP1
Energize and switch on
IPM protection occurs after the
machine has run for a period of time?
Use AC voltmeter to measure the voltage between terminal L and N on the wiring board XT)
If the voltage between terminal L and N on wiring board XT is within 210VAC~250VAC?
Check the supply voltage and restore it to
210VAC~250VAC
Voltage between the two ends of celectrolytic
capacitor (test3) is
Restart the unit. Before protection occurs, use DC voltmeter to measure the voltage
between the two ends of electrolytic capacitor on control
panel AP1 (test3)
If the unit can work
normally?
Please confirm: 1. If the indoor and outdoor heat exchangers are dirty? If they are obstructed by other
objects which affect the heat exchange of indoor and outdoor unit. 2. If the indoor and outdoor fans are working normally?
3. If the environment temperature is too high, resulting in that the system
pressure is too high and exceeds the
permissible range? 4. If the charge volume of refrigerant is too much, resulting in that the system pressure is too high?
5. Other conditions resulting in that the system pressure becomes too high.
The connection of capacitor C2
is loose.
Reconnect the capacitor C2 according to Electrical Wiring Diagram. Then, Restart theunit.
Stop the unit and disconnect the power supply. Wait 20 minutes, or use DC voltmeter to measure the voltage
between the two ends of capacitor C2, until the
voltage is lower than 20V
Replace the capacitor C2. Then, energize and start the unit.
Replace the control panel AP1
Take corrective actions according to Technical Service Manual, and
then energize and start the unit.
If there is any abnormality
described above?
Replace the control panel AP1
If the connection between AP1 and COMP is unsecure or the connection order is wrong?
Connect the control panel AP1 and compressor COMP correctly according to the Electrical Wiring Diagram. Then, energize and start the unit.
Use ohmmeter to measure the resistance between the three terminals on compressor COMP, and compare the measurements with the
compressor resistance on Service Manual.
If the resistance is
normal?
Use ohmmeter to measure the resistance between the two
terminals of compressor COMP and copper tube.
Replace the compressor
COMP
Resistance higher than 500MΩ?
Replace the control panel
AP1
END
Y N
YN
Y
N
Y
If the unit can work normallv? Y
If the unit can work normally? Y
N
N
Y
N
If the unit can work normally? YY
N N
If the unit can work
normally?Y
Y
N
Y
N
N
Y
higher than 250V
Remove the wires on the two ends ofcapacitor C2. Then,use capacitancemeter to measurethe capacitor C2.Verify as per theParameters Sheet.
Stop the unit and disconnect the power supply. Then, check the connection ofcapacitor C2according to ElectricalWiring Diagram.
If capacitorC2 is failed?
Refer to the Electrical Wiring Diagram and check if the connectionbetween AP1 andCOMP is loose and ifthe connection orderis correct.
End
Y
N
Y
N
Y
N
Overheat and high temperature protection
Is outdoor ambient temperature higher than 53?
20 minutes after the complete unit is powered off.
Is heat dissipation of the indoor unit and outdoor unit abnormal?
Normal protection, please operate it after the outdoor ambient temp-erature is normalized.
Improve the heat dissipation environ-ment of the unit
Does the outdoor fan work normally?
1. Check if the fan terminal OFAN is connected correctly2. Resistance between any two terminals is measure by an ohm gauge and should be less than 1K Ohm.
Replace the control panel AP1
Replace the fan capacitor C1
Replace the outdoor fan
Y
N
Y
N
N
Y
Y
N
Power on the unit
Is stop time of the compressor longer than 3 minutes?
Restart it up after 3 minutes
Does startup fail?
Are the wires for the compressor connected correctly? Is connection sequence right?
Connect the wires as per the connection diagram
Replace the control panel AP1
If the fault is eliminated?
Replace the compressor
End
Out of step occurs once the unit is powered on.
Is stop time of the compressor longer than
3 minutes?
Are the wires for the compressor connected correctly? Is connection sequence right?
Is the connection made in clockwise direction?
Connect the wires correctly
Replace the control panel AP1
If the fault is eliminated?
Replace the compressor
End
Out of step occurs in operation
Is the outdoor fan working normally?
Is the outdoor unit blocked by foreign objects?
Replace the control panel AP1
If the fault is eliminated?
Replace the compressor
End
Check if the fan terminal OFAN is connected correctly
Remove foreign objects
Replace the fan capacitor C1
Replace the outdoor fan
20 minutes after the complete unit is
powered off
Is the terminal FA for the electronic expansion valve
connected correctly?
Connect the wires correctly
Resistances between the first four pins close to the terminal hole and the fifth pin are almost the same, less than 100 ohm.
Replace the electronic expansion valve
If the fault is eliminated?
If the fault is eliminated?
Replace the control panel
AP1
Coolant leakage, refilling the coolant
End
Y
Y
N
N
N
N
N
N
Y
Y
Y
Start
Check wiring of the reactor (L) of the outdoor unit and the PFC capacitor
Whether there is any damage or
short-circuit?
Replace it as per the wiring diagram and
reconnect the wiresIf the fault is eliminated?
Remove the PFC capacitor and measure resistance
between the two terminals.
Is the resistance around zero?
The capacitor is short circuited and
the capacitor should be repla-ced
Restart the unit If the fault is eliminated?
Disconnect the terminals for the reactor and measure the resistance between the two terminals of the reactor by an ohm gauge
Whether there is any damage or short-circuit?
Replace the reactor Restart the unit If the fault is eliminated?
Replace the control panel AP1
End
Y
Y
N
Y
N
N
Y
N
N
Y
N
Y
N
Y
Y
Start
Did the equipment operate normally before the failure
occurs?
The AP1 voltage detection circuit is at fault
Check wiring inside of the indoor and outdoor
units
Are wires broken?
Check the communication circuit of the outdoor unitIf the fault is eliminated?
The communication circuit is abnormal
Replace the main board of the indoor unit
End
If the fault is eliminated?
Replace the main board AP1 of the outdoor unit
If the fault is eliminated?
Is the connection right?
Check the wiring of the indoor and outdoor units with reference to the
wiring diagram
Correctly connect the corresponding wires for the indoor and outdoor units with reference to
the wiring diagram
Y
Y
Y
Y
Y
N
N
N
N
Start
Measure voltage at the Test 10 position as
shown in the diagram with a voltmeter
Value jumping
Measure voltage at the Test 15 position as
shown in the diagram with a voltmeter
Value jumping
Measure voltage at the Test 11 position as
shown in the diagram with a voltmeter
Value jumping
Measure voltage at the Test 12 position as
shown in the diagram with a voltmeter
Value jumping
The communication circuit of the outdoor
unit is normal
EndFault with
outdoor unit