E3
Haier
Supply Voltage Out of Range
Haier induction cooktop shows E3 and the burner will not heat
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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 line voltage (too high or too low), Loose power supply connections, Faulty power board sensing circuit, Shared circuit causing voltage drop
How to Fix / Troubleshooting
Safety first: This involves high voltage. If you are not trained, contact an electrician.
- Measure supply voltage: With a multimeter and proper safety precautions, measure the voltage at the cooktop terminal block. Compare with the rating on the nameplate (typically 220–240 V).
- Check connections: Turn off the breaker and tighten all terminal screws at the cooktop and at the wall connection. Loose connections can cause voltage fluctuations.
- Dedicated circuit: Ensure the cooktop is on a dedicated circuit of the correct amperage as specified by Haier.
- Power board inspection: If supply voltage is correct but E3 persists, the power board's voltage sensing circuit may be faulty. Replace the power control board.
Never operate the cooktop on an incorrect voltage; it can damage electronics and pose a fire risk.
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Repair Difficulty
Professional Required
5/5
Required Part
Power Control Board
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