LG GR-349SQF Service Manual ▷ View online
- 35
-
CLASSIFICATION
STATE OF TROUBLE
POINT BE CHECKED
CHECKING METHOD
CONTENT
REMEDY
DEFROSTING is
NO DEFROSTING.
1. HEATER emit heat?
PRESS TEST KEY on MAIN
HEATER disconnection.
Replace HEATER.
poor.
on MAIN PWB twice.
(forced DEFROSTING)
TEMPERATURE FUSE
Replace TEMPERATURE
disconnection.
FUSE.
Connection is poor.
Certify EVA connection and
wire of MAIN PWB
CONNECTOR
DEF-SENSOR is poor.
Replace DEF-SENSOR.
HEATER RELAY is poor.
Replace RY4 of MAIN PWB.
2. DRAIN PIPE blocking?
Ceritify DRAIN PIPE.
DRAIN PIPE bloking.
Remove ice and impurities.
Certify HEATER PLATE
resistance.
3. Remain ice at
Certify the attaching
Attraching is poor.
Reassemble DEF-SENSOR.
DEFROSTING?
of DEF-SENSOR.
Certify the attaching
DOOR sticking is poor.
Reassemble DOOR.
state(gap) of FREEZER/
Replace GASKET.
REFRIGERATOR DOOR.
DISPENSER is
NO PUMPING
1. PUMP MOTOR doesn't
Certify that the Voltage of
PUMP MOTOR is poor
Check the PUMP MOTOR
poor.
operate?
the PUMP MOTOR when
and the connection of it.
PUMP SWITH is pushed
is 12V
2. The connection of PUMP
Check the connection.
Connection is poor
Check the connection.
SWITCH is poor?
The connection of
Replace PUMP SWITCH.
PUMP SWITCH is poor.
3. MAIN PWB is poor?
After pushing the PUMP
MAIN PWB is poor.
Replace MAIN PWB.
SWITCH, check the PWB.
PUMP MOTOR don't
1. The conncetion of PUMP
Check the connection of
PUMP SWITCH is short.
Reassemble the connnection
stop.
SWITCH is poor?
PUMP SWITCH.
of PUMP SWITCH.
2. MAIN PWB is poor?
Check the voltage of CON6
MAIN PWB is poor.
Replace MAIN PWB.
on MAIN PWB.
- 35
-
CLASSIFICATION
STATE OF TROUBLE
POINT BE CHECKED
CHECKING METHOD
CONTENT
REMEDY
DEFROSTING is
NO DEFROSTING.
1. HEATER emit heat?
PRESS TEST KEY on MAIN
HEATER disconnection.
Replace HEATER.
poor.
on MAIN PWB twice.
(forced DEFROSTING)
TEMPERATURE FUSE
Replace TEMPERATURE
disconnection.
FUSE.
Connection is poor.
Certify EVA connection and
wire of MAIN PWB
CONNECTOR
DEF-SENSOR is poor.
Replace DEF-SENSOR.
HEATER RELAY is poor.
Replace RY4 of MAIN PWB.
2. DRAIN PIPE blocking?
Ceritify DRAIN PIPE.
DRAIN PIPE bloking.
Remove ice and impurities.
Certify HEATER PLATE
resistance.
3. Remain ice at
Certify the attaching
Attraching is poor.
Reassemble DEF-SENSOR.
DEFROSTING?
of DEF-SENSOR.
Certify the attaching
DOOR sticking is poor.
Reassemble DOOR.
state(gap) of FREEZER/
Replace GASKET.
REFRIGERATOR DOOR.
DISPENSER is
NO PUMPING
1. PUMP MOTOR doesn't
Certify that the Voltage of
PUMP MOTOR is poor
Check the PUMP MOTOR
poor.
operate?
the PUMP MOTOR when
and the connection of it.
PUMP SWITH is pushed
is 12V
2. The connection of PUMP
Check the connection.
Connection is poor
Check the connection.
SWITCH is poor?
The connection of
Replace PUMP SWITCH.
PUMP SWITCH is poor.
3. MAIN PWB is poor?
After pushing the PUMP
MAIN PWB is poor.
Replace MAIN PWB.
SWITCH, check the PWB.
PUMP MOTOR don't
1. The conncetion of PUMP
Check the connection of
PUMP SWITCH is short.
Reassemble the connnection
stop.
SWITCH is poor?
PUMP SWITCH.
of PUMP SWITCH.
2. MAIN PWB is poor?
Check the voltage of CON6
MAIN PWB is poor.
Replace MAIN PWB.
on MAIN PWB.
- 35
-
CLASSIFICATION
STATE OF TROUBLE
POINT BE CHECKED
CHECKING METHOD
CONTENT
REMEDY
DEFROSTING is
NO DEFROSTING.
1. HEATER emit heat?
PRESS TEST KEY on MAIN
HEATER disconnection.
Replace HEATER.
poor.
on MAIN PWB twice.
(forced DEFROSTING)
TEMPERATURE FUSE
Replace TEMPERATURE
disconnection.
FUSE.
Connection is poor.
Certify EVA connection and
wire of MAIN PWB
CONNECTOR
DEF-SENSOR is poor.
Replace DEF-SENSOR.
HEATER RELAY is poor.
Replace RY4 of MAIN PWB.
2. DRAIN PIPE blocking?
Ceritify DRAIN PIPE.
DRAIN PIPE bloking.
Remove ice and impurities.
Certify HEATER PLATE
resistance.
3. Remain ice at
Certify the attaching
Attraching is poor.
Reassemble DEF-SENSOR.
DEFROSTING?
of DEF-SENSOR.
Certify the attaching
DOOR sticking is poor.
Reassemble DOOR.
state(gap) of FREEZER/
Replace GASKET.
REFRIGERATOR DOOR.
DISPENSER is
NO PUMPING
1. PUMP MOTOR doesn't
Certify that the Voltage of
PUMP MOTOR is poor
Check the PUMP MOTOR
poor.
operate?
the PUMP MOTOR when
and the connection of it.
PUMP SWITH is pushed
is 12V
2. The connection of PUMP
Check the connection.
Connection is poor
Check the connection.
SWITCH is poor?
The connection of
Replace PUMP SWITCH.
PUMP SWITCH is poor.
3. MAIN PWB is poor?
After pushing the PUMP
MAIN PWB is poor.
Replace MAIN PWB.
SWITCH, check the PWB.
PUMP MOTOR don't
1. The conncetion of PUMP
Check the connection of
PUMP SWITCH is short.
Reassemble the connnection
stop.
SWITCH is poor?
PUMP SWITCH.
of PUMP SWITCH.
2. MAIN PWB is poor?
Check the voltage of CON6
MAIN PWB is poor.
Replace MAIN PWB.
on MAIN PWB.
- 35
-
CLASSIFICATION
STATE OF TROUBLE
POINT BE CHECKED
CHECKING METHOD
CONTENT
REMEDY
DEFROSTING is
NO DEFROSTING.
1. HEATER emit heat?
PRESS TEST KEY on MAIN
HEATER disconnection.
Replace HEATER.
poor.
on MAIN PWB twice.
(forced DEFROSTING)
TEMPERATURE FUSE
Replace TEMPERATURE
disconnection.
FUSE.
Connection is poor.
Certify EVA connection and
wire of MAIN PWB
CONNECTOR
DEF-SENSOR is poor.
Replace DEF-SENSOR.
HEATER RELAY is poor.
Replace RY4 of MAIN PWB.
2. DRAIN PIPE blocking?
Ceritify DRAIN PIPE.
DRAIN PIPE bloking.
Remove ice and impurities.
Certify HEATER PLATE
resistance.
3. Remain ice at
Certify the attaching
Attraching is poor.
Reassemble DEF-SENSOR.
DEFROSTING?
of DEF-SENSOR.
Certify the attaching
DOOR sticking is poor.
Reassemble DOOR.
state(gap) of FREEZER/
Replace GASKET.
REFRIGERATOR DOOR.
DISPENSER is
NO PUMPING
1. PUMP MOTOR doesn't
Certify that the Voltage of
PUMP MOTOR is poor
Check the PUMP MOTOR
poor.
operate?
the PUMP MOTOR when
and the connection of it.
PUMP SWITH is pushed
is 12V
2. The connection of PUMP
Check the connection.
Connection is poor
Check the connection.
SWITCH is poor?
The connection of
Replace PUMP SWITCH.
PUMP SWITCH is poor.
3. MAIN PWB is poor?
After pushing the PUMP
MAIN PWB is poor.
Replace MAIN PWB.
SWITCH, check the PWB.
PUMP MOTOR don't
1. The conncetion of PUMP
Check the connection of
PUMP SWITCH is short.
Reassemble the connnection
stop.
SWITCH is poor?
PUMP SWITCH.
of PUMP SWITCH.
2. MAIN PWB is poor?
Check the voltage of CON6
MAIN PWB is poor.
Replace MAIN PWB.
on MAIN PWB.