E14
Elnur
Shorted Temperature Sensor
Boiler displays E14; may indicate sensor short-circuit condition.
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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
NTC sensor shorted internally, Sensor cable crushed or pinched, Moisture ingress into sensor connection, PCB input short
How to Fix / Troubleshooting
Safety first: Isolate the boiler from the mains before testing.
- Identify which sensor: Consult the fault code table in the Elnur manual to determine whether E14 refers to flow, return, or DHW sensor.
- Inspect cable route: Follow the sensor cable from the PCB to the sensor. Look for areas where the cable may be trapped under covers or clipped too tightly.
- Disconnect and test: Unplug the sensor from the PCB and measure resistance. A reading close to 0 Ω confirms a shorted sensor.
- Check PCB input: If the sensor reads correctly when disconnected but E14 persists, the PCB input may be shorted and the board will need replacement.
- Replace sensor: Fit a new Elnur sensor if the original is shorted. Route the cable to avoid sharp bends and hot surfaces.
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Repair Difficulty
Medium
3/5
Required Part
NTC Temperature Sensor
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