Medium
Low water pressure on Ferroli F24b

Your boiler has stopped working because the amount of water inside your heating system has dropped below the required level.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

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

Low pressure will be indicated by flashing light in the middle of the facia illuminating (bar). The boiler pressure gauge should read at least 1 bar.

From this model's manual
Verified against the Ferroli F24b 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.

DIY fix possible

Locate the filling loop, which is usually a flexible silver hose connected to two valves beneath the boiler.Open the valves slowly to allow water into the system until the pressure gauge on the front of the boiler reads between 1 bar and 1.5 bar.Close both valves tightly and ensure there is no dripping from the connection points.

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