BoilerFaultCodes Red flashing running lamp Your boiler has lost water pressure and has shut down as a safety precaution.
Your boiler has lost water pressure and has shut down as a safety precaution.
What to check first
- Locate the filling loop (usually a silver flexible hose) underneath your boiler.
- Slowly open the tap or taps on the filling loop until you hear water entering the system.
- Monitor the pressure gauge until it reaches between 1.0 and 1.5 bar, then turn the taps off tightly.
- The red light should stop flashing and the boiler should restart.
Parts commonly replaced
- Filling loop
- Expansion vessel
- Pressure relief valve