Boiler displays F.61, no ignition, gas valve error

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

Short or open circuit in gas valve coil, Damaged gas valve wiring, PCB gas valve driver failure, Incorrect polarity or earthing

Safety: Gas valve diagnostics and replacement must be done by a Gas Safe engineer.

Reset once: Try a reset. If F.61 persists, leave the boiler off.
Check supply polarity: Ensure live and neutral are correctly wired at the fused spur. Incorrect polarity can cause control issues.
Engineer tasks: A technician will measure gas valve coil resistance, inspect wiring, and test PCB outputs. Gas valve or PCB may need replacement.

Professional Required 5/5

Gas Valve Assembly

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