Kospel Short Cycling / Intermittent Operation

Heater frequently shuts off and restarts while using hot water.

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.

Possible Causes

Marginal flow around activation threshold, Clogged inlet filter, Faulty flow sensor in hydraulic block, Overheat thermostat tripping intermittently

Safety: Beware of sudden temperature changes at the tap.

1. Improve flow: Fully open the hot tap and ensure inlet valves are fully open. Clean inlet filters and outlet aerators.
2. Flow sensor: Inspect and clean the flow sensor; replace if its signal is unstable.
3. Overheat protection: Check the safety thermostat for signs of overheating or poor contact with the heat exchanger. Replace if it trips at too low a temperature.

Medium 3/5

Flow Sensor / Safety Thermostat

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