A 02 Your boiler has stopped working because the water pressure inside the heating system has dropped too low.
Your boiler has stopped working because the water pressure inside the heating system has dropped too low.
What to check first
- Locate the filling loop (a silver flexi-hose with one or two valves) underneath the boiler.
- Open the valves slowly to allow mains cold water into the system until the pressure gauge reads between 1 and 1.5 bar.
- Close the valves tightly and check the boiler display to see if the error has cleared.
Parts commonly replaced
- Pressure relief valve
- Pressure transducer
- Expansion vessel