LG LFXS30726S Service Manual page 69

10-2 Sheath Heater (Freezer Room)
Function Sheath heater is the part for defrost. All heating wire is connected to only one line. So we
can decide part is defective or not when we check the resistance.
How to
Measure
Set a ohmmeter connect to The housing pins.
Measure the pins connected to Sheath Heater.
If the ohmmeter indicates (V°øV)/Watt=R is on a good condition,
ex) watt=200W, voltage=115V R=(115x115)/200=66
Infinitive value implies sheath heater is disconnected.
Standard Sheath heater (at all temperature)
Test Point Ressult
(1) to (2) 62 ~ 70
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(1) (2)