E3
Monogram
Supply Voltage Out of Range
Induction cooktop displays 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 wiring (120V instead of 240V), Loose connections at terminal block, Low or high line voltage from service panel, Internal power supply fault on control board
How to Fix / Troubleshooting
Safety first: Turn off power at the breaker before inspecting wiring. Only qualified persons should test live voltage.
- Verify supply voltage: Have a qualified electrician measure voltage at the cooktop terminal block. Monogram ranges/cooktops typically require 208–240V.
- Check wiring configuration: Confirm that the cooktop is wired according to the installation manual (correct L1, L2, N, and ground connections).
- Tighten connections: With power off, inspect and tighten terminal block screws. Look for signs of overheating or melted insulation.
- Control board check: If supply voltage is correct and E3 persists, the internal power supply on the main control board or induction module may be defective and require replacement.
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Repair Difficulty
Professional Required
5/5
Required Part
Main Power Control Board
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