E12
Eldom
External Module / Remote Control Fault
Eldom heater shows E12; may be associated with external control or smart module not working.
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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
Faulty Wi-Fi or remote control module, Incorrect wiring to external thermostat, Firmware incompatibility
How to Fix / Troubleshooting
Safety: Turn off power before handling modules or wiring.
Steps:
- Check external connections: If your Eldom heater is connected to an external room thermostat or smart controller, verify wiring according to the Eldom wiring diagram.
- Disconnect external control: Temporarily remove the external control module or disconnect its terminals and restore factory jumper (if specified). Power the heater and see if E12 clears.
- Inspect module: For Wi-Fi or remote modules, ensure they are firmly plugged into the designated connector and not water-damaged.
- Firmware reset: If available, perform a factory reset of the control via the user menu (consult Eldom manual).
- Replace module: If E12 is linked to a specific external module, replace that remote/Wi-Fi module with a compatible Eldom part.
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Repair Difficulty
Medium
3/5
Required Part
Eldom Remote / Wi-Fi Control Module
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