LG RC9055*P*Z Service Manual page 27

10
DIAGNOSTIC TEST
Test 4 Heater check
Trouble Symptom : Heater is not working. Drying failure. The designated
Measurement condition :
Heater On/Off occurs
frequently
Trouble Symptom : Motor malfunction, ventilation error
temperature is not reached.
Power cord is unplugged.
1
• Check the heater resistance.
1) Yellow tab relay violet wire ~
White tab relay yellow wire :
50Ω ?
2) White connector 2wire : 50Ω ?
( See photo on the left )
• Check the resistance of thermostat
to heater.
Is it less than 1Ω?
Manually reset thermostat
(Press button ).
And check resistance thermostat.
1. Check if Lint filter is
damaged or clogged.
2. Check if condensing unit
is clogged or not.
27
• Check and replace
controller.
• See page 17, PCB
assembly lay-out.
• Check harness &
connection
• Replace Heater
• Check harness &
connection