Eldom heater shows E14; this may be associated with overheating or a high outlet temperature.

Safety: Hot water can cause burns. Allow the system to cool before working near the outlet pipe.

Steps:

• Locate outlet sensor: Some Eldom models have a separate NTC clipped to the hot water outlet pipe or in a dedicated well.
• Check mounting: Ensure the sensor is firmly clipped to the pipe or fully inserted into its pocket, with any thermal paste or sleeve intact.
• Inspect cable: Look for cuts or kinks in the sensor cable. Re-seat the connector at the control board.
• Measure resistance: Disconnect and measure the sensor resistance at room temperature; compare it to Eldom specifications. Replace if out of range.
• Replace sensor: Install a new outlet NTC temperature sensor if the original is defective.