E15
Montpellier
Low Voltage / Power Supply Instability
E15 error, oven display flickers or resets when heating is started.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Loose mains connection at terminal block, Undersized supply cable, Faulty internal power supply on control board, Household voltage drop under load
How to Fix / Troubleshooting
Safety first: Turn off power at the consumer unit before tightening any terminals.
Steps to check:
- Terminal block: Access the rear of the oven and inspect the mains terminal block. Tighten all screws and check for heat damage.
- Supply cable: Ensure the oven is wired with the correct cable size and properly connected to a dedicated circuit as per Montpellier specifications.
- House supply: If lights dim or other appliances are affected when the oven heats, consult an electrician to check the household supply.
- Control board PSU: If only the oven display is unstable, the internal low-voltage power supply on the control board may be failing and require replacement.
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Repair Difficulty
Hard
4/5
Required Part
Main Control Board
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