LG Electronics GR-P257/L257 Defrosting failure, Trouble Diagnosis, Problems, Causes, Measures

Compare P and lavel capacity. Tolerance: ±7%

(R: Resistance of tester[Ω])

(V: Rated voltage of user country)

1. Check heater label.

2. Confirm the capacity after substituting the resistance value into the formula.

V2 P= ––

R

Checks

1. Check the resistance of heater.

0Ω: Short. ∞Ω: Cut.

Tens to thousands Ω: OK.

2. Check the resistance between housing terminal and heater surface.

0Ω: Short. ∞Ω: Cut.

Tens to thousands Ω: Short.

1. Confirm foreign materials. In case of ice, insert the copper line through the hole to check.

2. Put hot water into the drain (check drains outside).

1. Confirm in the Sucking duct.

2-5. Defrosting failure

Problems	Causes
No defrosting. Heater does not generate heat as
the heating wire is cut or the circuit
is shorted.
1)	Heating wire is damaged when
	inserting into the evaporator.
2)	Lead wire of heater is cut.
3)	Heating wire at lead wire contacts
	is cut.

Sucking duct and discharging hole are clogged:

1.Impurities.

2.Ice.

- 59 -

Gap between Sucking duct and

Heater plate(Ice in the gap).

Wrong heater rating (or wrong assembly).

Measures	Remarks
Heating wire is short and wire is cut.	Seal the lead wire with
• Parts replacement: Refer to parts	insulation tape and heat
explanations.	contraction tube if the cut
	lead wire is accessible to
	repair.

1)Push out impurities by inserting copper wire.(Turn off more than 3hours and pour in hot water if frost is severe.)

2)Put in hot water to melt down frost.

3)Check the water outlet.

4)Push the heater plate to sucking duct manually and assemble the disconnected parts.

1)Turn off the power, confirm impurities and ice in the gap, and supply hot water until the ice in the gap melts down.

2)Push the Heater plate to drain bottom with hand and assemble the disconnected parts.

Faults:replace.

- How to replace: Refer to main parts.

TROUBLE DIAGNOSIS