Hi, I recently moved into a ground floor flat. It was built in 1993 and I think the combi boiler is the one that was installed when the flat was built.
It is a Glow worm swift flow 80, connected to 4 small and one large radiator.
So far its performed great! There is loads of pressure with the hot water and it heats it very hot and gives the best showers ever! However, two times now it has done something that scares me. When running the hot tap continuously for about 10 minutes - so a long shower, running the bath, cleaning the kitchen etc, there is a sudden loud horrid sound and rumble of a whoosh of water coming from in the boiler. The pressure gauge on the boiler drops suddenly during this time shoots to about 0.2bar. It is usually at 0.7 when doing nothing. after about 3 seconds the noise stops, the pressure shoots back up to about 0.8bar and the fan stays on before stopping as normal and then the pressure gauge resumes down to 0.7bar again.
This just happened again scaring the hell out of me as I was in the kitchen and was able to notice the pressure changes. I shut off the hot water tap in the kitchen which stopped the noise. I then noticed that the radiators are all now slightly warm even though the heating isn't on. I have noticed before that the radiators do get slightly warm after a shower, but the hot water heating works as expected and I have had the heating on which works fine and as expected, so didn't think there was much of a problem.
Sorry for the long post but does anyone know what is going on?! Why is my boiler, on occasion, making scary wooshing noises and loosing pressure then working as normal?
Any help would be great.
It is a Glow worm swift flow 80, connected to 4 small and one large radiator.
So far its performed great! There is loads of pressure with the hot water and it heats it very hot and gives the best showers ever! However, two times now it has done something that scares me. When running the hot tap continuously for about 10 minutes - so a long shower, running the bath, cleaning the kitchen etc, there is a sudden loud horrid sound and rumble of a whoosh of water coming from in the boiler. The pressure gauge on the boiler drops suddenly during this time shoots to about 0.2bar. It is usually at 0.7 when doing nothing. after about 3 seconds the noise stops, the pressure shoots back up to about 0.8bar and the fan stays on before stopping as normal and then the pressure gauge resumes down to 0.7bar again.
This just happened again scaring the hell out of me as I was in the kitchen and was able to notice the pressure changes. I shut off the hot water tap in the kitchen which stopped the noise. I then noticed that the radiators are all now slightly warm even though the heating isn't on. I have noticed before that the radiators do get slightly warm after a shower, but the hot water heating works as expected and I have had the heating on which works fine and as expected, so didn't think there was much of a problem.
Sorry for the long post but does anyone know what is going on?! Why is my boiler, on occasion, making scary wooshing noises and loosing pressure then working as normal?
Any help would be great.
