Low
P5 on Worcester Bosch Greenstar R29 40 HE

Your boiler is currently running its usual initial internal startup check, which should clear itself momentarily as the system boots up.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description

Part of the self-test sequence sequence when the appliance is switched on.

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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