Kospel Overheating / Temperature Overshoot

Water is too hot even at low temperature settings; risk of scalding.

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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 outlet NTC sensor reading too low, Stuck power relay or triac keeping elements on, Incorrect wiring of sensors, Scaled heat exchanger causing localized overheating

How to Fix / Troubleshooting

Safety: Turn off power immediately to avoid scalding and damage. Allow the unit to cool.

  • 1. Verify settings: Confirm the set temperature on the control panel is reasonable.
  • 2. Check outlet NTC: Inspect and test the outlet temperature sensor. Replace if resistance does not match Kospel specifications.
  • 3. Inspect control board: Look for stuck or welded power relays/triacs that may be energizing elements continuously. Replace the main PCB if necessary.
  • 4. Descale heat exchanger: If overheating occurs at normal settings, descale the heat exchanger to improve heat transfer and reduce hotspots.
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Repair Difficulty

Hard 4/5

Required Part

Outlet NTC Sensor / Main Control Board
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