LG GR-B197DVCA Service Manual page 70

TROUBLE DIAGNOSIS
CLAIMS.
3. Refrigeration
4) No cooling air circulation.
is weak.
5) Compressor capacity.
6) Refrigerant
7) Continuous operation
8) Damper opens continuously.
9) Food storing place. - Near the outlet of cooling air.
CAUSES AND CHECK POINTS.
Faulty fan motor.
Fan is
constrained.
Small cooling air Insufficient
discharge. motor RPM
Faulty fan.
Shorud.
Ice and foreign materials on rotating parts.
too much or too little.
- No contact of temperature controller. - Foreign materials.
Foreign materials
P/U liquid dump.
jammed.
EPS water sediment.
Screw.
Failed sensor. - Position of sensor.
Characteristics
Bad characteristics of its own temperatue.
of damper.
Parts misuse.
Charge of temperature - Impact.
characteristics.
Fan shroud contact. - Clearance.
Damping evaporator contact.
Accumulated residual frost.
Fan overload. - Fan misuse.
Bad low termperature RPM characteristics.
Rated power misuse.
Low voltage.
Fan misuse.
Bad shape.
Loose connection. - Not tightly connected.
Insert depth.
Bent.
Rating misuse.
Small capacity.
Low valtage.
Malfunction of charging cylinder.
Wrong setting of refrigerant.
Insufficient compressor. - Faulty compressor.
- 70 -
HOW TO CHECK
Check visually after
disassembly.
Check visually after
disassembly.