E11
Zanussi
Low-voltage power supply fault on control board
Display shows E11 and the refrigerator interior light or alarms behave erratically
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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
Failed low-voltage regulator on PCB, Shorted component on UI or sensor circuit, Loose power connectors, Surge-damaged main control board
How to Fix / Troubleshooting
Safety: Unplug the refrigerator. Electronic board work should be done with power removed.
Basic checks:
- Inspect mains connection: Ensure the power cord and wall socket are in good condition. Avoid extension leads.
- Access main PCB: Remove the rear control cover. Look for burnt components, bulging capacitors, or a burnt smell.
- Check connectors: Reseat all low-voltage connectors from the PCB to the UI, fans, and sensors.
- Eliminate external shorts: Disconnect non-essential loads (e.g., ice maker, door display) one at a time and see if the error clears after power-up (only if you are experienced and methodical).
- Replace PCB: If visible damage is present or E11 persists despite reseating connectors, the main control board likely needs replacement.
Note: Board-level component repair is not recommended for end users; replacing the entire PCB is the standard fix.
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Repair Difficulty
Professional Required
5/5
Required Part
Main Control Board (PCB)
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