INDUCTION RANGE ERROR CODES
Error
Code
Shown Phrase
PRI
Component
Error Description
Service Instruction
4821
MDL shorted or missing
2
Right oven
No load detected when
the MDL is turned on. Or
the drive circuit for the
MDL is conducting when
it should be open.
1
Check the MDL connections.
2
Replace the relay board.
4822
MDL shorted or missing
2
Left oven
No load detected when
the MDL is turned on. Or
the drive circuit for the
MDL is conducting when
it should be open.
1
Check the MDL connections.
2
Replace the relay board.
4F21
RS485 Set output mismatch
2
Right relay board
The requested output
state is not equal to the
feedback response of the
relay board.
1
Replace the Relay board.
4F22
RS485 Set output mismatch
2
Left relay board
The requested output
state is not equal to the
feedback response of the
relay board.
1
Replace the relay board.
2721
Reset error
2
Right relay board
The watchdog has reset
the relay board.
1
Replace the relay board.
2722
Reset error
2
Left relay board
The watchdog has reset
the relay board.
1
Replace the relay board.
A026
Relay board over temperature -
ambient
2
Left relay board
The relay board ambient
temperature sensor is
over 217°F (103°C).
1
Replace the relay board.
A027
Relay board over temperature -
ambient
2
Right relay board
The relay board ambient
temperature sensor is
over 217°F (103°C).
1
Replace the relay board.
A0C0
Relay board RS485 wasted
frames
2
Left relay board
Relay board has wasted
too many communication
frames.
1
Replace the relay board.
A0C1
Relay board RS485 wasted
frames
2
Right relay board
Relay board has wasted
too many communication
frames.
1
Replace the relay board.
A03F
RTD reference circuit error
2
Left relay board
Reference for RTD circuit
is not correct.
1
Replace the relay board.
A040
RTD reference circuit error
2
Right relay board
Reference for RTD circuit
is not correct.
1
Replace the relay board.
A0BC
RS485 RTD plausibility error
2
Left relay board
RTD data from the relay
board is not plausible.
1
Replace the relay board.
A0BE
RS485 RTD plausibility error
2
Right relay board
RTD data from the relay
board is not plausible.
1
Replace the relay board.
30" and 36" Induction Range
Troubleshooting
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