Medium
43 on Ferroli Arena

Your boiler has detected that the water inside the system has become too hot and has temporarily turned itself off to cool down, which it should fix automatically.

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.

What the manual says

Manufacturer manual

Temporary shutdown fault - resets automatically as soon as the value comes back within the boiler’s normal working range

From this model's manual
Verified against the Ferroli Arena installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

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

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