LG LSWS306ST Service Manual page 48

Failure Code Summary
Code Description
F1 Sensor open
F2 Sensor short
F3 Key short
F6 Oven hot
Oven
F9
No heating
F10 Door Lock Fail
TROUBLESHOOTING
explanation
Oven Thermistor is open
Oven Thermistor is shorted.
1. If '25 key short' occurred 3 times in 90 sec-
onds.
2. If communication is impossible with Touch IC
more than 60 seconds
The oven temperature is over 650℉
continuously for 2 minutes during cooking ex-
cept self cleaning.
EXCEPT PROOF, WARM and EASY CLEAN
Starting temperature of 130 ℉ or less, and the
oven door is closed, the oven inside tempera-
ture does not go up more than 10℉ compared
with the starting temperature for 5minutes after
the start of cooking.
If Door Lock Failure while operating the Lock
motor.
7-2
Check point
1.Wiring
2.Oven Sensor
1.Wiring
2.Oven Sensor
1.Wiring
2. Touch PCB
( in case of Key Pad
Model )
Oven Sensor
1.Electrical Wiring
2.Oven Sensor
1. Electrical Wiring
2. Motor's Resistance
3. Micro Switch