Oven Hot, F6 - LG LRE3061ST Service Manual

CHECKING FLOW CHART BY FAILURE

Oven hot, F6?

Unplugged the unit
1
Is the resistance of thermistor normal?
Check:
Pins 1 and 2 of CN13 wiring in main PCB
Normal- approximately 1.09kΩ at 25˚C
Yes
Is the Heater relay normal?
2
Measure the resistance of heater relay and L.
Normal: infinite
Abnormal: continuity
Broil(RY105) Relay Resistance
No
Replace the failed
thermistor
CN13
No
Replace the
relay PCB
Normal Abnormal
Bake(RY104) Relay Resistance
CN101 1 st pin and 2 nd pin
3
Is the DLB relay normal?
Measure the resistance
Normal : infinite
Abnormal : continuity
L2
-9-13-
Yes
No
Replace the relay PCB
Normal Abnormal
DLB1(RY106)
Relay Resistance
Yes