Ideal boiler displays H2 and may shut down intermittently
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: Turn off the boiler and allow it to cool before any inspection. Do not remove the boiler case.
User checks:
- Reset: Power cycle the boiler and reset once to see if the fault clears.
Engineer tasks: Measure resistance of the flow thermistor, check wiring back to the PCB, and replace the flow NTC sensor if out of specification. Replace PCB if sensor and wiring are sound but fault remains.
Repair Difficulty
Required Part
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