BoilerFaultCodesThe 6 most common faults
Your boiler has stopped working because the water pressure inside the heating system has dropped too low.
Locate the filling loop (usually a silver braided hose with one or two valves) underneath your boiler.Open the valve(s) slowly to allow cold mains water into the system until the pressure gauge reads between 1.0 and 1.5 bar.Close the valve(s) tightly and your boiler should automatically restart.
Your boiler has stopped working because the water pressure inside the heating system has dropped too low.
Locate the filling loop under the boiler, which usually consists of one or two flexible braided hoses with small levers or valves.Open the valves slowly to allow mains water to enter the system until the pressure gauge on the front of the boiler reads between 1.0 and 1.5 bar.Close the valves tightly and check the boiler display to see if the error code has cleared.
Your boiler has detected that there is not enough water circulating inside the system to operate safely, which prevents it from firing up.
Check your boiler's pressure gauge on the front display.If the needle is below 1 bar, locate the filling loop (usually a silver braided hose under the boiler).Open the valves on the filling loop to allow cold mains water into the system until the gauge reaches 1.5 bar, then close the valves tightly.
Your boiler is unable to measure the temperature of the water inside it, so it has safely shut down to prevent overheating.
Full guide for F.00Your boiler is struggling to accurately measure the temperature of the water returning to it, so it has stopped working to prevent potential overheating.
Full guide for F.01Your boiler has stopped working because it is unable to accurately measure the temperature of the water inside it, likely due to a faulty sensor or damaged wiring.
Full guide for F.10on the Glow-worm Easicom3 Combi
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 Glow-worm 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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