LG LRSC26980TT Service Manual - Page 65

LG LRSC26980TT Manual

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TROUBLE DIAGNOSIS PROBLEM 3. Refrigeration is weak. CAUSE/CHECK POINTS 1) Refrigerant Partly leaked. Weld joint leak. Parts leak. REMARKS 2) Poor defrosting capacity. Drain path (pipe) clogged. Inject adiabatics into drain hose. Inject through the hole. Seal with drain. I Check visually. Foreign materials penetration. Adiabatics lump input. Damage by a screw or clamp. Other foreign materials input. Defrost heater does not generate heat. Cap drain is not disconnected. Parts Plate disconnected. heater Cord heater Wire is cut. - Heating wire. - Contact point between heating and electric wire. Dent by fin evaporator. Poor terminal contacts. Wire is cut. - Lead wire. - Heating wire. - Contact point between heating and electric wire. Heating wire is corroded - Water penetration. Bad terminal connection. I Check terminal Conduction: OK. No conduction: NG. If wire is not cut, refer to resistance. P=Power V=Voltage R=Resistance P= -V2 R R= -V2 P - 65 -

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TROUBLE DIAGNOSIS
- 65 -
PROBLEM
CAUSE/CHECK POINTS
REMARKS
3. Refrigeration
is weak.
Plate
heater
Cord
heater
1) Refrigerant Partly leaked.
2) Poor defrosting capacity.
Drain path (pipe) clogged.
Defrost heater does not
generate heat.
Weld joint leak.
Parts leak.
Inject adiabatics into drain
hose.
Foreign materials
penetration.
Cap drain is not disconnected.
Inject through the
hole.
Seal with drain.
Adiabatics lump input.
Damage by a screw or
clamp.
Other foreign materials input.
Parts
disconnected.
Wire is cut.
- Heating wire.
- Contact point
between heating
and electric wire.
Dent by fin evaporator.
Poor terminal contacts.
Wire is cut.
- Lead wire.
- Heating wire.
- Contact point
between heating and
electric wire.
Heating wire is corroded
- Water penetration.
Bad terminal connection.
■
Check visually.
■
Check terminal
Conduction: OK.
No conduction: NG.
If wire is not cut, refer to
resistance.
P=Power
V=Voltage
R=Resistance
V
2
P=
—
R
V
2
R=
—
P