LG LDG4315ST Service Manual page 56

2 Basic Check Summary
Symptom : Oven hot(F6, F16)
-. Check: All heater relays are
open/shorted
Symptom : Oven lamp not
operating
-. Check the Lamp coil's resistance
SVC TEST MODE
Symptom : no heating(F9, F19)
-. Check : All heater relays and
DLB relay are open
Symptom : Conv. Fan open(F17)
- Check : All Conv. fan relays
7-3
Symptom : Sensor error or
no heating
F1,F2,F9, F19)
- Check : Sensor resistance
Symptom :
Door lock fail (F10, F20)
- Check : relative part