E14
Chaffoteaux
Control Board / EEPROM Fault
Furnace displays E14 and will not start; often indicates an internal electronics issue.
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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 control board memory, Power surge damage, Loose board connectors, Internal control board failure
How to Fix / Troubleshooting
Safety: Disconnect power before accessing the electronics compartment.
- Power cycle: Turn off the furnace at the main switch or breaker for at least 60 seconds, then restore power. This can clear transient faults.
- Check supply voltage: Ensure the furnace is supplied with stable voltage within the range specified on the rating plate. Avoid using undersized extension leads.
- Inspect board connections: Remove the control board cover and gently press all multi-pin connectors to ensure they are fully seated. Do not touch bare tracks or components.
- Surge protection: If E14 occurred after a storm or power cut, consider installing surge protection and have a technician test the board.
- Professional replacement: If E14 persists, the control board (PCB) will likely need replacement and configuration by a qualified Chaffoteaux technician.
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Repair Difficulty
Professional Required
5/5
Required Part
Main Control Board (PCB)
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