High
Reset LED is lit on Halstead Buckingham 4

Your boiler has stopped working because it has detected an issue with the water temperature or the ignition process and needs to be reset.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

What the manual says

Manufacturer manual

Water system overheating or ignition failure.

From this model's manual
Verified against the Halstead Buckingham 4 installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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