Failure Code Summary - LG LRG4111ST Service Manual

2. Failure Code Summary

Code Description
F1 Sensor open
F2 Sensor short
F-3 Key short
F6 Oven hot
F7 Conv. Fan
Motor Open
F9 Oven
No heating
TROUBLESHOOTING
Oven Thermistor is open
Oven Thermistor is shorted.
1. If '25 key short' occurred 3 times in 90 seconds.
2. If communication is impossible with Touch IC more
than 60 seconds
The oven temperature is over 650℉
continuously for 2 minutes during cooking except self
cleaning.
During cook, if convection fan does not operate while 1
minute (cumulative time) in the period of convection
fan operation.
EXCEPT PROOF, WARM and EASY CLEAN
Starting temperature of 130℉ or less, and the oven
door is closed, the oven inside temperature does not go
up more than 10℉ compared with the starting
temperature for 5minutes after the start of cooking.
8-2
explanation Check point
1.Wiring
2.Oven Sensor
1.Wiring
2.Oven Sensor
1.Wiring
2.Touch PCB
Oven Sensor
1. Wiring
2. Motor's Resistance
1.Electrical Wiring
2.Oven Sensor