TROUBLE DIAGNOSIS
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CLAIMS. CAUSES AND CHECK POINTS. HOW TO CHECK
3. Poor Cooling
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
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