High
F37 on Ferroli Domi Compact

Your boiler has detected that the water pressure inside the system is too low, so it has temporarily turned itself off to prevent any damage.

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.

What the manual says

Manufacturer manual

Temporary shutdown that is automatically reset as soon as the value causing the fault comes back within the boiler’s normal working range

From this model's manual
Verified against the Ferroli Domi Compact installation & service manual, page 29.
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 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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Avoid the next call-out bill

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