LG RC9011 Series Service Manual page 25

DIAGOSTIC TEST
11
Test 4 Heater check
Trouble Symptom : Heater is not working. Drying failure. The designated
Measurement condition :
RLY2
WH2
Heater On/Off occurs
frequently
temperature is not reached.
Power cord is unplugged.
1
RLY1
With Tab relay housing
disconnected from Controller,
1) RLY1
ranges 26Ω~32Ω ?
2) RLY1
resistance ranges 53Ω~59Ω ?
RLY1
When check thermostat to
Heater,
it is less than 1Ω?
Manually get Thermostat
back (Press button )
1. Clean Condensing unit :
2. Check if Lint filter is
damaged or clogged
Trouble Symptom : Motor malfunction, ventilation error
- RLY2 1 resistance
2
2 - WH2 pin
1
24
• Check and replace
controller.
• RLY2 ~ WH2
• See page 17, PCB
assembly lay-out.
• Replace Heater
• Check Harness
connection