E3
Insignia
Supply Voltage Out of Range
Induction cooktop displays E3 and the burner will not operate.
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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, Miswired junction box, Faulty power board sensing circuit
How to Fix / Troubleshooting
Safety first: Turn off power at the breaker before checking electrical connections. Only qualified persons should test live voltage.
- Verify supply voltage: Using a multimeter, confirm that the cooktop is receiving the correct voltage (typically 240 VAC for Insignia electric cooktops, or per rating plate). Correct any wiring issues in the junction box.
- Inspect terminal block: With power OFF, check the cooktop terminal block for loose screws, burned lugs, or damaged wires. Tighten connections and replace any burned components.
- Check breaker and wiring size: Ensure the circuit breaker and wire gauge meet the cooktop's requirements.
- Replace power board: If supply voltage is correct and E3 persists, the power board's voltage sensing circuit may be faulty and the board should be replaced.
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Repair Difficulty
Hard
4/5
Required Part
Main Power Control Board
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