High
PP5 on Grant Vortex Blue

Your boiler has stopped working because its internal thermometer, which checks the temperature of the air around it, has developed a fault.

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

Ambient temperature sensor failure

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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Related fault codes

PP1View →PP2View →PP3View →PP4View →

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