Medium
2 0 5 on Ariston HS Premium

Your boiler is having difficulty communicating with an optional bolt-on solar heating component and is reporting a connection error for that sensor.

Book a service

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

Open circuit acm integration probe (Optional solar kit)

Engineer required

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

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