High
PUMP SAFETY DEVICE ACTIVATED on Ariston Euro Prisma 24

Your boiler has stopped working because it cannot detect the water being pushed through the system correctly.

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

Differential pressure switch for pump / wiring / PCB issue

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

A41View →

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