28
4. Troubleshooting
4-1 Failure Display Codes
Safety error
Failure code
CAUSE
SOLUTION
E-27
oven sensor opened
(over 2950Ω)
1)
After 20 seconds from starting to work of
oven, buzzer is beeping 10 times long and
then finally it displays “E-27” or “E-28” as
Error message .
2)
If a series of function for error is not
performed at all, please make sure through
the method of 4-1 on 30 page .
E-28
Oven sensor shorted .
(Under 940Ω)
“E-27”
or
“E-28”
Disconnect power
Measure sensor resistance.
(1080Ω at the room temperature)
No
No
No
Ok
Ok
Check the connecting condition of harness
(Oven sensor and CN03 of main PCB)
Measure resistance of connector CN02
of Main PCB (Nomal : 2850Ω)
Make sure the pattern, soldering, damaged
parts related to oven sensor of main PCB,
and repair them or replace main PCB
according to case.
Replace oven sensor
oven sensor
oven sensor
*reconnect
*repair damaged
harness replace.
END
END
CN03
CN03
(Main PCB)
(Main PCB)
