LG TD-C7014 series Service Manual page 24

11 DIAGOSTIC TEST
Test 4 Heater check
Trouble Symptom : Heater is not working. Drying failure. The designated
Measurement condition :
WH3 RD3
1 2 3 1 2 3
Heater On/Off occurs
frequently
Trouble Symptom : Motor malfunction, ventilation error
temperature is not reached.
Power cord is unplugged.
With WH3, RD3 disconnected
from Controller,
WH3
ranges 26 Ω~32 Ω ?
WH3
ranges 53 Ω~59 Ω ?
When check thermostat to
Heater,
it is less than 1 Ω?
Manually get Thermostat
back (Press button )
1. Clean Condensing unit :
2. Check if Lint filter is
damaged or clogged
- RD3 resistance
- RD3 resistance
NO
NO
2 4
• Check and replace
controller.
YES
• Relay RTY2, RTY3
• See page 15, PCB
assembly lay-out.
• Replace Heater
YES
• Check Harness
connection