Medium
B07 on Ariston Euro Prisma 24

Your boiler is having trouble switching between heating your radiators and providing hot water because an internal switch has failed to trigger.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

Technical description

Microswitch for Diverter Valve

Engineer required

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

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