LG LDE4413ST Service Manual page 70

Oven hot, F6, F16?
Unplug the unit
1
Is the resistance of
thermistor normal?
Check:
Pins 4 and 5 of CN60 and pins
5 and 6 of
CN61 in main PCB
Normal- approximately 1.09kΩ at 25℃
Yes
TROUBLESHOOTING
Replace the
defective
No
Thermistor
CN61
CN60
7-18
2
Is the Heater relay normal?
Measure the resistance of
heater relay and L.
Normal: infinite
Abnormal : shorted
Tab 01 and Tab 11 : RY5
Tab 01 and Tab 12 : RY6
Tab 02 and Tab 21 : RY11
Tab 02 and Tab 22: RY12
Yes
Replace the
No
Relay PCB
Upper Bake
Heater Relay
Upper Broil
Heater Relay
Convection
Heater Relay
Lower Broil
Heater Relay