BoilerFaultCodesThe 6 most common faults
Your boiler has stopped working because the water pressure inside your heating system has dropped too low.
Locate the filling loop, which is a silver braided hose or a small valve under the boiler.Slowly open the valve to let mains water into the system until the pressure gauge reads between 1.0 and 1.5 bar.Close the valve tightly and check your boiler to see if the error code has cleared.
Your boiler has stopped working because the water pressure inside the system has dropped too low to operate safely.
Locate the filling loop (a flexible metal hose) underneath your boiler.Open the valves on the filling loop to allow cold mains water to enter the system.Watch the pressure gauge on the front of the boiler and close the valves once the needle reaches 1.5 bar.
Your boiler has detected that the water inside the unit is not circulating or cooling down properly, so it has purposefully shut itself off to prevent the internal system from overheating.
Full guide for F43Your boiler is failing to light the flame needed to provide heating and hot water.
Full guide for A01Your boiler has detected that it is running too hot and has automatically shut down to prevent damage to the system.
Full guide for A03Your boiler has detected an issue with the internal ventilation system that removes exhaust gases, so it has safely shut down to prevent unsafe operation.
Full guide for A05on the Ferroli Force W
Based on parts cited in our fault code database. Your engineer will confirm what's actually needed after diagnosis.
Call a Gas Safe engineer if…
- You can smell gas or see signs of a leak
- The Ferroli shows an Emergency or High severity code
- The boiler keeps locking out after repeated resets
- You've tried the DIY checks and the fault hasn't cleared
- There's visible water leaking from the boiler
- The flame is yellow or orange instead of blue
Avoid the next call-out bill
Monthly cover means no unexpected bills when your boiler breaks down.
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