Dimplex
Dangerous Over-Temperature Condition
Water heater produces steam or very hot water intermittently at outlets
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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
Failed thermostat or sensor, Stuck heating relay, Blocked outlet causing flash boiling, Faulty mixing valve
How to Fix / Troubleshooting
Danger: Risk of severe scalding. Turn off the heater immediately and do not use hot water until the fault is resolved.
- Inspect sensors: Check that all temperature sensors are correctly mounted and connected. Replace any suspect sensors.
- Check mixing valve: Verify correct operation of any thermostatic mixing valve. Replace if it fails to limit outlet temperature.
- Evaluate control PCB: If elements remain energized when they should be off, the PCB relay/triac is likely faulty and must be replaced.
Recommendation: This fault should be addressed by a qualified technician due to safety implications.
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Repair Difficulty
Professional Required
5/5
Required Part
Thermostat / NTC Sensors / Main Control PCB
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