E3
Gaggenau
Supply Voltage Too High
Induction cooktop displays E3 and shuts off or refuses to start on one or more zones
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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
Line voltage above specification, Incorrect electrical connection (e.g., 3-phase miswired), Faulty power module voltage sensing circuit, Loose neutral connection in junction box
How to Fix / Troubleshooting
Safety: This error involves mains voltage. Only qualified persons should open junction boxes or access wiring. Always switch off the circuit breaker before inspecting connections.
- Power reset: Turn the cooktop off and switch off the breaker for 5 minutes. Restore power and test.
- Check for other home issues: If lights flicker or other appliances misbehave, contact an electrician to check the supply voltage.
- Verify wiring (electrician only): Confirm that the cooktop is wired according to the Gaggenau wiring diagram (correct phase, neutral, and ground). Incorrect 2- or 3-phase connections can cause E3.
- If supply is correct but E3 persists: The induction power module may have a defective voltage sensing circuit and should be tested and replaced by a Gaggenau service technician.
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Repair Difficulty
Professional Required
5/5
Required Part
Induction Power Module
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