Termet
Insufficient Heating Capacity
Water heater ignites but water is not hot enough, temperature is lower than setpoint even at maximum setting.
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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
Partially blocked burner on Termet heater, Low gas pressure, Scaled primary heat exchanger, Faulty modulation control on gas valve
How to Fix / Troubleshooting
Safety: Gas and combustion adjustments must be done by qualified personnel.
- Check flow rate: Reduce the hot water flow at the tap. Excessive flow can exceed the heater's capacity, especially in winter.
- Clean inlet filter: Ensure the cold water inlet filter is clean to maintain proper flow through the heat exchanger.
- Descale heat exchanger: If in a hard water area, perform a descaling of the Termet heat exchanger to restore efficiency.
- Gas supply check: Have a technician measure gas pressure and clean the burner. They should also verify that the gas valve modulates correctly according to Termet specifications.
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Repair Difficulty
Medium
3/5
Required Part
Primary Heat Exchanger
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