WALL OVEN ERROR CODES
Error
Code
Message
Priority
Component
Service Instruction
3B20
Low Input Voltage
2
1
Check the electrical supply to the unit.
Voltage was below 177 volts.
3C20
High Input Voltage
2
1
Check the electrical supply to the unit.
Voltage was above 265 volts.
3D20
Input Frequency Fault
2
Frequency was below 47 Hz, or above 63 Hz.
1
Clear the error.
2
Contact an electrician.
4021
Bake Element Load Missing
2
Upper/Single oven
1
Check the bake element.
2
Check the voltage to the bake element.
3
Replace the relay board.
4022
Bake Element Load Missing
2
Lower oven
1
Check the bake element.
2
Check the voltage to the bake element.
3
Replace the relay board.
4121
R Conv Element Load Missing
2
Upper/Single oven
1
Check the right convection element.
2
Check the voltage to the right convection
element.
3
Replace the relay board.
4122
R Conv Element Load Missing
2
Lower oven
1
Check the right convection element.
2
Check the voltage to the right convection
element.
3
Replace the relay board.
4221
Broil Element Load Missing
2
Upper/Single oven
1
Check the broil element.
2
Check the voltage to the broil element.
3
Replace the relay board.
4222
Broil Element Load Missing
2
Lower oven
1
Check the broil element.
2
Check the voltage to the broil element.
3
Replace the relay board.
4321
L Conv Element Load Missing
2
Upper/Single oven
1
Check the left convection element.
2
Check the voltage to the left convection
element.
3
Replace the relay board.
4322
L Conv Element Load Missing
2
Lower oven
1
Check the left convection element.
2
Check the voltage to the left convection
element.
3
Replace the relay board.
4421
Cooling fan load missing
2
Upper/Single oven
1
Check the cooling fan.
2
Check the cooling fan connections.
3
Check the voltage to the cooling fan.
4
Replace the relay board.
4422
Cooling fan load missing
2
Lower oven
1
Check the cooling fan.
2
Check the cooling fan connections.
3
Check the voltage to the cooling fan.
E Series Oven
Troubleshooting
Wall Oven Error Codes
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