Faults - LG GR-B197WVS Service Manual

2. Faults

2-1. Power
Problems Causes
No power on - Power cord cut.
outlet. - Faulty connector insertion.
- Faulty connection between plug
and adapter.
Fuse blows out. - Short circuit by wrong connection.
- Low voltage products are
connected to high voltage.
- Short circuit by insects.
- Electricity leakage.
- High voltage.
- Short circuit of components
(tracking due to moisture and dust
penetration).
2-2. Compressor
Problems Causes
Compressor - Faulty PTC.
does not
operate.
- Compressor is frozen.
Checks
- Check the voltage with tester.
- Check visually.
- Check visually.
- Check the fuse with tester
or visually.
- Check the input volt are with tester
(between power cord and products). - Replace with rated fuse.
- Check the resistance of power cord
with testerf (if it is 0 , it is shorted).
Checks
- Check the resistance.
Vlaue: is defective.
- If compressor assembly parts are
normal(capacitor, PTC, OLP),
apply power directly to the
compressor to force operation.
Auxiliary winding
Main winding
Power
OLP It starts as soon as it is
contacted.
Measures
-Replace the components.
-Reconnect the connecting parts.
- Reconnect the connecting parts.
- Find and remove the cause of
problem(ex. short, high voltage,
low voltage).
Measures
- If resistance is infinite, replace it
with new one.
- If it is not infinite, it is normal.
- Check other parts.
- During forced operation:
- Operates: Check other parts.
- Not operate: Replace the frozen
compressor with new one, weld,
evacuate, and recharge refrigerant.
• Refer to weld repair procedures.
Remarks
- Replace with rated
fuse after confirming
its specification.
If fuse blowns out
frequently, reconfirm
the cause and prevent.
Remarks