E4
Electrolux Overvoltage / Power Supply Protection Fault

Air fryer beeps and shows E4; unit will not start or stops mid-cycle.

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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

Line voltage above rated range, Faulty surge suppressor or MOV on control board, Defective power supply section on main PCB, Loose or burnt power connector

How to Fix / Troubleshooting

Safety first: Disconnect the air fryer from mains power before inspection.

Steps:

  • Check outlet voltage: If you have a multimeter and know how to use it safely, measure the outlet voltage. It should match the rating on the air fryer nameplate (e.g., 120 V or 230 V). If voltage is unstable or high, contact an electrician.
  • Try another outlet: Plug the air fryer into a different, properly grounded outlet without extension cords or power strips. Retest.
  • Inspect power cord and plug: Look for burn marks, cuts, or kinks. If the cord is damaged, it must be replaced; do not tape or splice it.
  • Internal inspection: Remove the housing and inspect the main control PCB. Look for a burnt MOV (surge suppressor), charred components, or cracked solder joints near the power input. If any are present, the board should be replaced as an assembly.

Note: Overvoltage faults often indicate external electrical issues. If multiple appliances in your home show similar symptoms, have your electrical system checked.

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Repair Difficulty

Medium 3/5

Required Part

Main Control PCB
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