High
Amber neon on Grant Vortex Combi 70

Your boiler has stopped heating because the water pressure inside your radiator system has dropped too low to operate safely.

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.

Technical description

If the heating system water pressure falls below 0.2 bar the boiler low pressure cut-out switch will activate and an amber neon on the control panel will light.

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.

Find a Gas Safe engineer
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