Dimplex
Complete Heating Failure
No hot water at all; unit has power but water remains cold
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
Failed heating element, Tripped high-limit thermostat, Faulty flow sensor not allowing activation, Defective control PCB
How to Fix / Troubleshooting
Safety: Turn off power at the breaker before opening the unit.
- Check indicators: Verify that the power and demand indicators on the Dimplex heater illuminate when a hot tap is opened. No demand light suggests a flow or sensor issue.
- Reset high-limit: Locate and press the manual reset button on the overheat thermostat if present.
- Test element: With power off and wires removed, measure resistance across the heating element. Replace if open circuit.
- Inspect flow sensor: Ensure the flow sensor operates and is clean. Replace if not detecting flow.
Next step: If all components test good, the control PCB may be defective and should be replaced by a technician.
Advertisements
Repair Difficulty
Hard
4/5
Required Part
Heating Element Assembly
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements