Please do take care to read the information thoroughly as it is there to help you understand fault codes and to keep you safe. There are also some help, tips and hints with a lot of the fault codes published here that you usually will not find anywhere else and, as we learn, we add more information so if you can't find what you need please ask in the forums.
Before using this section please understand that fault or error codes are used as a diagnostic aid, they are not a replacement for diagnostic skill on the part of the person repairing the product and are not in any way usually going to point to the precise component that is faulty. All they do is give you an idea of where to start looking for the fault.
North London Appliances Repair forums
We add more information as we learn so if you can't find what you need please ask in the Repair forums.
Initiate Diagnostic Mode Upper Oven - Press and hold the TEMPERATURE key and the "0" key.
Initiate Diagnostic Mode Lower Oven - Press and hold the TEMPERATURE key and the "0" key.
Initiate Diagnostic Mode Single Oven - Press and hold the TEMPERATURE key and the "0" key.
F1
Door Lock or Unlock Switches
- Issue:
- Door Lock or Unlock Switches not sensed within 60 seconds while driving the doorlock motor
- Advice:
- Ohm door lock switches. Replace MDL (Motor Door Lock) Assembly
OVER TEMP
OVER TEMP
- Issue:
- Over temperature occurs when the oven reaches a temperature of 630 °F for anunlocked door and 930°F for a locked door
- Advice:
- Ohm RTD sensor, replace if bad. If RTD good replace Relay board.
RTD OPEN
Open circuit detected on RTD Oven Sensor
- Issue:
- Open circuit detected on RTD Oven Sensor
- Advice:
- Replace RTD Sensor
RTD SHORTED
Shorted circuit detected on the RTD Sensor
- Issue:
- Shorted circuit detected on the RTD Sensor
- Advice:
- Replace RTD Sensor
KEYBOARD ERROR
KEYBOARD ERROR
- Issue:
- Key communication error
- Advice:
- Replace Control Panel Assembly
KEY COMM
KEY COMM
- Issue:
- Failure between the Oven Controller andthe Control Panel Assembly
- Advice:
- Check flat flex cable between control panel assembly and oven controller for bad connec- tion. Replace Oven Controller.
COMM ERR
COMM ERR
- Issue:
- Communication lost with the oven controller
- Advice:
- Replace Control Panel Assembly
CHECKSUM
CHECKSUM
- Issue:
- Self check done at power up, and when theoven off key is pressed.
- Advice:
- Replace Oven Controller
PROBE SHORTED
PROBE SHORTED
- Issue:
- Temperature probe failure
- Advice:
- Re-seat probe. Replace Temperature Probe
EEPROM
EEPROM
- Issue:
- Cannot read or write to Eeprom
- Advice:
- Replace Oven Controller
SENSOR CAL
SENSOR CAL
- Issue:
- Analog to Digital error during calibration phase
- Advice:
- Replace Oven Controller
CONTROL COM
CONTROL COM
- Issue:
- Communication lost with the oven controller
- Advice:
- Check flat flex cable between control panel assembly and oven controller for bad connection. Replace Oven Controller.
RELAY CAL
RELAY CAL
- Issue:
- Relay phase calibration failed the timing problem with the relay on the relay board
- Advice:
- Replace relay board ONLY if the error is noted four consecutive times when in diagnostic mode
RELAY STUCK
RELAY STUCK
- Issue:
- Power relay shorted - sensed as being closed when it should be open by current sensor on the oven controller
- Advice:
- Replace Relay Board
COOL FAN
COOL FAN
- Issue:
- Cooling fan failure
- Advice:
- Ohm cooling fan, replace if defective.
SPI COMM
SPI COMM
- Issue:
- Communication lost with the oven control board
- Advice:
- Check flex ribbon cable from head assembly to oven control board, unplug and replug.
LOWER RELAY
LOWER RELAY
- Issue:
- Lower oven shift register feedback has indicated a failure
- Advice:
- Perform troubleshooting using flow chart
FUSES WRONG
FUSES WRONG
- Issue:
- Controller configuration settings incorrect or code protection is disabled.
- Advice:
- "OFF" Clears error. If error will not clear, replace main controler.
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