37 Your boiler has stopped working because the water pressure inside your heating system has dropped too low.
Your boiler has stopped working because the water pressure inside your heating system has dropped too low.
What to check first
- 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.
Parts commonly replaced
- Pressure relief valve
- Filling loop
- Pressure sensor