E16
Elnur
EEPROM / Firmware Fault
Boiler displays E16; may indicate internal memory or software error.
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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
Corrupted firmware, Power surge during operation, Incorrect PCB version, Internal memory failure
How to Fix / Troubleshooting
Safety first: Isolate the boiler from the mains.
- Power cycle: Leave the boiler powered off for several minutes, then restore power to see if the error clears.
- Check supply quality: If frequent power cuts or surges occur, consider fitting a surge protector or voltage stabiliser to protect the boiler electronics.
- Factory reset (if available): Follow the Elnur manual to perform a factory reset of the control parameters.
- PCB replacement: If E16 persists, the main PCB may need to be replaced with a correctly programmed board. This should be done by an authorised service engineer.
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Repair Difficulty
Professional Required
5/5
Required Part
Main Control PCB
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