E24
Electrolux
Low Voltage Power Supply Error
Microwave displays E24 and becomes unresponsive or resets intermittently.
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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
Defective low-voltage power supply on main PCB, Loose power connector, Failing line filter board, Intermittent main relay on control board
How to Fix / Troubleshooting
Safety: Unplug the microwave before inspection.
User-level checks:
- Outlet test: Plug another high-load appliance (like a toaster) into the same outlet to verify stable power. Avoid using extension cords or power strips.
- Power reset: Unplug for 10 minutes, then plug directly into a dedicated wall outlet.
Technician-level checks:
- Inspect the line filter / noise filter board for burn marks or loose terminals.
- Check the main control PCB for swollen capacitors or heat-damaged components in the low-voltage section.
- Verify tightness of all spade connectors from the power cord to the control board.
- Measure low-voltage outputs (e.g., 5V, 12V) from the power supply section to confirm stability.
If the low-voltage supply is unstable, the main control board typically must be replaced.
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Repair Difficulty
Hard
4/5
Required Part
Main Control Board
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