Fondital
Insufficient DHW Temperature
Water heater produces lukewarm water only, not reaching set temperature.
Advertisements
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.
Advertisements
Possible Causes
Gas rate too low, Partially blocked burner, Scaled DHW heat exchanger, Faulty DHW NTC sensor causing premature modulation down
How to Fix / Troubleshooting
Safety: Gas adjustments must be done by qualified personnel.
- Check set temperature: Ensure the DHW temperature on the Fondital control panel is set high enough.
- Flow rate: Reduce the flow at the tap. Excessive flow can prevent the heater from reaching the desired temperature.
- Clean burner: Have the burner cleaned to restore full combustion area.
- Descale DHW heat exchanger: If symptoms are worse at high flow, the plate heat exchanger is likely scaled and needs descaling.
- Sensor check: Replace the DHW NTC if it reads too high, causing the control to reduce power prematurely.
Advertisements
Repair Difficulty
Medium
3/5
Required Part
DHW NTC Temperature Sensor
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements