LG LSC 27950SB, Service Manual

Page: 70 / 108

TROUBLE DIAGNOSIS
- 70 -
Problems
Causes
Checks
Measures
Remarks
High
Cycle pipe is clogged.
Check sequence.
- Maybe evacuate should be the first
Direr must be replaced.
temperature in
1. Check temperature of condenser
step here. If the servicer puts a torch
the freezer
manually.
to a charged system, the joint will
compartment.
If it is warm, OK.
explode and spray refrigerant on him.
If it is not, compressor discharging
Also, if oil is forced out, it could
joints might be clogged.
create a fire or safety hazard.
2. Manually check whether hot line
- If it's warm, OK. If it's not,
pipe is warm.
condenser discharging line weld
If it is warm, OK.
joints might be clogged.
If it is not, condenser outlet weld
D
ischarge the system and recover the
joints might be colgged.
refrigerant. Then use a torch to
disconnect unbraze the piping to repair the obstruction. Repair, evacuate the system, and recharge it before testing.
Leak at loop pipe weld joint
Check sequence.
Replace the compressor, weld,
Drier must be replaced.
(discharge) in compressor.
1. Manually check whether
evacuate, and recharge refrigerant.
condenser is warm, It is not warm and the frost forms partly on the evaporator in the freezer compartment.
Faulty cooling fan in the compressor
Check sequence.
- Replace if motor does not operate.
compartment.
1. Check cooling fan operation.
- If fan is disconnected, check fan
2. Check that cooling fan is
damage and reassemble it.
disconnected from the motor.
■
Refer to fan motor disassembly
and assembly sequence.