No hot water but heating works on an Ideal combi boiler
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.
Possible Causes
How to Fix / Troubleshooting
Safety first: Hot water can suddenly become very hot; be cautious when testing taps.
User checks:
- Check tap flow: Ensure good cold water flow at the kitchen tap. If cold flow is poor, there may be a mains supply issue.
- Check boiler display: When a hot tap is opened, the boiler should show a hot water demand symbol. If it does not, the DHW flow sensor may not be detecting flow.
- Reset: Power cycle and reset the boiler once.
Engineer tasks: Clean or replace the DHW flow sensor/turbine, clean or replace the plate heat exchanger, and check the diverter valve operation.
Repair Difficulty
Required Part
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