E3
Thor Kitchen
Supply Voltage Out of Range
Induction cooktop shows E3, zone will not heat or shuts off quickly.
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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 wiring at junction box, Low or high line voltage, Loose neutral or ground, Internal power board sensing fault
How to Fix / Troubleshooting
Safety first: This involves live voltage checks. If you are not qualified, contact a licensed electrician.
- Verify wiring: Turn off power at the breaker. Remove the junction box cover and confirm that L1, L2, neutral, and ground are connected according to the Thor Kitchen installation manual.
- Tighten connections: Check for loose wire nuts or terminal screws and tighten securely.
- Measure voltage: With power restored, measure voltage at the cooktop input: typically 208–240 VAC between L1 and L2, and 120 VAC from each leg to neutral (if used). Correct any supply issues.
- Inspect power board: If supply voltage is correct but E3 persists, the main power board may be misreading voltage and should be replaced.
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Repair Difficulty
Professional Required
5/5
Required Part
Main Power Board
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