Induction cooktop displays F0E4 and shuts off or refuses to start

Safety first: Turn off power at the breaker before opening the junction box or terminal block. Only qualified persons should work on mains wiring.

• Verify supply voltage: Using a multimeter, measure voltage at the cooktop terminal block according to the installation diagram (typically 220–240 V AC between L1 and L2 in EU). Correct any wiring errors.
• Inspect connections: Tighten all terminal screws at the cooktop and in the wall box. Look for signs of overheating or melted insulation.
• Check neutral/ground: Ensure neutral and earth connections are secure and correctly placed per Ikea/Whirlpool wiring diagram.
• Module fault: If supply is correct and connections are sound, the internal power supply on the induction module may be defective and require replacement.