LG LS-J0960NL Service Manual ▷ View online
-59-
■
The problem of missing the connector (INDOOR MAIN PCB ASSY)
Connectors
CN-POWER
CN-AC
CN-DC
CN-IPM
CN-GND1,2
CN-HEAT
CN-4WAY
CN-FAN
CN-OLP
CN-TH
CN-COMP
Condition
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN/SHORT
OPEN/SHORT
• Malfunctions outdoor unit.
• Stop compressor and outdoor fan.
• The operation LED blinks 5 times.
• Stop compressor and outdoor fan.
• The operation LED blinks 5 times.
• Malfunctions outdoor unit.
• Stop compressor and outdoor fan.
• The operation LED blinks 5 times.
• Stop compressor and outdoor fan.
• The operation LED blinks 5 times.
• Malfunctions PFC & inverter circuit.
• Stop compressor and outdoor fan.
• Stop compressor and outdoor fan.
• Malfunctions EMI /EMS
• Malfunctions Sump Heater
• Malfunctions 4-WAY valve.
• Malfunctions fan.
• Malfunctions Comp. Motor.
• The operation LED blinks 4 times.
• The LED01K blinks 4 times.
• The operation LED blinks 4 times.
• The LED01K blinks 4 times.
• The operation LED blinks twice.
• The LED01K blinks twice.
• The LED01K blinks twice.
• The LED01K blinks 10 times.
• Continue Comp. operation.
• Continue Comp. operation.
(when the comp. dome TH opens)
• Stop Comp. operation
(when the comp. dome TH shorts)
• Malfunctions outdoor unit.
• Stop compressor and outdoor fan.
• The operation LED blinks 5 times.
• Stop compressor and outdoor fan.
• The operation LED blinks 5 times.
Problem (error mode)
-60-
■
The problem of missing the connector (OUTDOOR MAIN PCB ASSY)
Connectors
CN-PWR
CN-FAN
CN-DATA
CN-DISP1
CN-DISP2
CN-TH
CN-UP/DOWN
CN-LR
Condition
OPEN
OPEN
OPEN
OPEN
OPEN
OPEN/SHORT
OPEN
OPEN
• Malfunctions all indoor & outdoor unit.
• Malfunctions remocon, force, test operation mode.
• Malfunctions remocon, force, test operation mode.
• Malfunctions outdoor unit.
• Stop compressor and outdoor fan motor.
• The operation LED blinks 5 times.
• Communicaion error.
• Stop compressor and outdoor fan motor.
• The operation LED blinks 5 times.
• Communicaion error.
• Malfunctions remote contoller.
• Don't operate the display module.
• Don't operate the display module.
• Don't operate the display module.
• The operation LED blinks twice.
• Enable to receive remote singnal.
• Enable to receive remote singnal.
• Malfunctions UP/DOWN step motor.
• Don't operate louver.
• Don't operate louver.
• Don't apply this model.
• To apply another model.
• To apply another model.
• Malfunctions indoor fan motor.
Problem (error mode)
■
The problem of missing the connector (SUB PCB ASSY)
Connectors
CN-UVW
CN-AC
CN-DC
CN-IPM
Condition
OPEN
OPEN
OPEN
OPEN
• Stop compressor Motor.
• Malfunctions outdoor unit.
• Stop compressor and outdoor fan.
• The operation LED blinks 5 times.
• Stop compressor and outdoor fan.
• The operation LED blinks 5 times.
• Malfunctions PFC & inverter circuit.
• Stop compressor and outdoor fan.
• Stop compressor and outdoor fan.
• Malfunctions outdoor unit.
• Stop compressor and outdoor fan.
• The operation LED blinks 5 times.
• Stop compressor and outdoor fan.
• The operation LED blinks 5 times.
Problem (error mode)
-48-
1. The malfunction indicator of indoor (see the operating LED)
The self-diagnosis function
The cause of malfunction
Error
Code
1
Indoor TH. is short or open.
Outdoor TH. is short or open.
Outdoor OLP is open.
Comunication error (serial
comunication).
comunication).
DC peak error.
Running current is
overloaded.
overloaded.
The operating LED will be
blinking once.
blinking once.
The operating LED will be
blinking twice.
blinking twice.
The operating LED will be
blinking 4 times.
blinking 4 times.
The operating LED will be
blinking 5 times.
blinking 5 times.
The operating LED will be
blinking 6 times.
blinking 6 times.
The operating LED will be
blinking 7 times.
blinking 7 times.
Keep operating state.
Keep operating state.
Restart compressor in the OLP short
state.
state.
The operation is off(enable to restart
by remote controller).
by remote controller).
Compressor will be turned off
immediately.
immediately.
Compressor will be turned off
immediately.
immediately.
Malfunction indicator
The operating state
2. The malfunction indicator of outdoor (see the LED01M on the outdoor PCB ass’y)
The cause of malfunction
Indoor TH. is short or open.
Outdoor OLP is open.
Comunication error (serial
comunication).
comunication).
DC peak error.
Running current is
overloaded.
overloaded.
Comp. dome TH is short or
open.
open.
The LED01M will be blinking
twice.
twice.
The LED01M will be blinking 4
times.
times.
The LED01M will be blinking 5
times.
times.
The LED01M will be blinking 6
times.
times.
The LED01M will be blinking 7
times.
times.
The LED01M will be blinking 10
times.
times.
Keep operating state.
Restart comp. on in the OLP short
state.
state.
The operation is off(enable to restart
by remote controller).
by remote controller).
Compressor will be turned off
immediately.
immediately.
Compressor will be turned off
immediately.
immediately.
Compressor will be turned off
immediately.
immediately.
Malfunction indicator
The operating state
❈
Error code
➅
,
➆
can’t be operated unless the power cord is removed.
2
4
5
6
7
2
4
5
6
7
10
Error
Code
-49-
■
Precaution in Service or Check
Even after stopping the operation of product, it takes some time to discharge the remaining electricity of the
electrolytic capacitor that was charged. Before starting a checking or repairing job, pull out the plug out of the
outlet and make sure that the lamp on the control board outdoor unit is off.
electrolytic capacitor that was charged. Before starting a checking or repairing job, pull out the plug out of the
outlet and make sure that the lamp on the control board outdoor unit is off.
■
The Diagnosis Procedure
Check the supplied voltage to product (AC 220V/240V ± 30V).
Check the connecting cable between Indoor and Outdoor.
Check the blinking number of operation indicator (refer to the self-error function).
Check the self-diagnosis table
• Check the condition of connectors
• The condition of P.C.B pattern.
• The condition of P.C.B pattern.
• Check the condition of connectors.
• The condition of P.C.B pattern.
• The electronic components.
• The condition of P.C.B pattern.
• The electronic components.
Indoor
Outdoor
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