Dimplex
Temperature Fluctuation / Hunting
Water temperature fluctuates between hot and cold during a shower
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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
Inconsistent water pressure, Thermostatic mixing valve interaction, Partially blocked shower head, Faulty outlet temperature sensor
How to Fix / Troubleshooting
Safety: Beware of sudden hot water surges.
- Clean outlets: Remove and descale the shower head and any aerators to ensure stable flow.
- Check cold supply: Ensure cold water pressure is stable and not being affected by other appliances (e.g., toilets, washing machines).
- Bypass mixing valve (test only): If safe and permitted, temporarily bypass the thermostatic mixing valve to see if stability improves. If it does, service or replace the valve.
- Inspect outlet sensor: Check the outlet NTC sensor for secure mounting and good contact. Replace if suspect.
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Repair Difficulty
Medium
3/5
Required Part
Outlet NTC Temperature Sensor
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