E3
Montpellier
Supply Voltage Too High
Induction hob shows E3 and will not heat on the affected zone.
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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
Incorrect electrical connection (400 V on single-phase hob), Mains overvoltage, Faulty power module voltage sensing circuit
How to Fix / Troubleshooting
Safety first: Do not use the hob if you suspect incorrect wiring. Risk of electric shock and fire. Isolate at the cooker switch immediately.
- Check installation paperwork: Confirm whether the hob is wired for single-phase or two/three-phase supply as per the Montpellier wiring diagram.
- Have voltage checked: A qualified electrician should measure the supply voltage at the terminal block. It must match the rating plate (typically 220–240 V for UK models).
- Inspect terminal block (electrician only): Ensure links and conductors are fitted exactly as shown in the installation manual. Incorrect bridging can cause E3.
- If wiring and supply are correct: The power module’s voltage sensing circuit may be defective and require replacement by an authorised service engineer.
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Repair Difficulty
Professional Required
5/5
Required Part
Power Module (Induction Power Board)
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