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Trouble4) When "ERROR2" or "ERROR3" come on display
DISPLAY
CONDITION
"ERROR 2 &
ERROR 3"
come on
display
When does happen these ERRORs ?
Error3 happen that the temperature sensor (thermister) dosen't connect to P.C.B
connector
Error2 happens if the temperature of cavity is very high
After the oven is cooled enough, operate again
If Display show "Err2" again, following the below procedure
CHECK
Check continuity of thermistor
(resistance of thermistor)
Check continuity of heater
(convection, upper, lower)
RESULT
0Ω or infinite
Approx
200k~300kΩ
(room
temperature)
No
continuty
Defective touch
continuity
32
CAUSE
REMEDY
Replace
Defective
thermistor
Defective
Replace
heater
Replace
control circuit
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