Termet
Temperature Instability / Cycling
Water temperature fluctuates between hot and cold during a shower, without any error code.
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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
Minimum flow rate not maintained through Termet heater, Partially blocked flow sensor turbine, Faulty modulation control, Mixing valve or thermostatic tap interaction
How to Fix / Troubleshooting
Safety: Be cautious of sudden temperature changes while testing.
- Stabilize flow: Open the hot tap more fully and reduce cold mixing at the shower to maintain a steady flow through the heater.
- Clean flow sensor: Remove and clean the Termet flow turbine and inlet filter to ensure accurate flow measurement.
- Avoid thermostatic mixing issues: If using a thermostatic shower mixer, test with a simple manual mixer to see if interaction is causing cycling.
- Service burner and sensors: Have a technician check NTC sensors, burner cleanliness, and gas valve modulation for smooth operation.
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Repair Difficulty
Medium
3/5
Required Part
Flow Sensor / Turbine Assembly
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