WALL OVEN ERROR CODES
Error
Code
Message
Priority
Component
Service Instruction
5021
High Temperature During Clean
2
Upper/Single oven
1
Check the oven temperature.
2
Check the RTD circuitry.
3
Replace the RTD.
4
Replace the relay board.
5022
High Temperature During Clean
2
Lower oven
1
Check the oven temperature.
2
Check the RTD circuitry.
3
Replace the RTD.
4
Replace the relay board.
5121
High Temperature Non-Clean
2
Upper/Single oven
1
Check the oven temperature.
2
Check the RTD circuitry.
3
Replace the RTD.
4
Replace the relay board.
5122
High Temperature Non-Clean
2
Lower oven
1
Check the oven temperature.
2
Check the RTD circuitry.
3
Replace the RTD.
4
Replace the relay board.
5220
RCB Ambient Exceeds Temp
2
Relay board ambient temperature sensor is
above 178°F (81°C).
1
Check the temperature in the relay board
area.
2
Check cooling fan operation.
3
Replace the relay board.
5320
MCB Ambient Exceeds Temp
2
Main control board ambient temperature sensor
is above 151°F (66°C).
1
Check the temperature in the relay board
area.
2
Check cooling fan operation.
3
Replace the relay board.
6020
MCB RS485 Network Fault
2
1
Check the RS485 circuitry.
2
Replace the main control board.
6110
General Application Fault
1
1
Reset the electrical supply.
2
Reseat the main control board (MCB) wire
connections.
3
Reseat the relay board wire connections.
4
Replace the MCB.
6120
MCB CAN Bus Fault
2
1
Reset the electrical supply.
2
Reseat the MCB wire connections.
3
Reseat the relay board wire connections.
4
Replace the MCB.
6210
MCB Configuration Data Fault
1
1
Reset the electrical supply.
2
Reseat the MCB wire connections.
3
Reseat the relay board wire connections.
4
Replace the MCB.
6320
MCB Invalid Configuration Data
2
1
Reset the electrical supply.
E Series Oven
Troubleshooting
Wall Oven Error Codes
service.subzero.com
829345 REVA
64
