hi i have a combi boiler that up till now has been fine. Just recently it has been making very loud knocking/gurgling (like when a kettle is initially boiling) noise which sounds like its coming from the pipes at the boiler, the bar pressure gage also jumps all over the place. This happens about 2 - 5 mins when the central heating is turned on and i've found i can get rid of the noise if i turn the bathroom hot taps on although the noise returns shortly after i turn them off. I have tried bleeding the rads and am unsure what to try next.
Hot water for baths/showers is fine no probs and the heating does work when the noise occurs but obviously something is not right.
Any ideas welcome.
Thanks
Hot water for baths/showers is fine no probs and the heating does work when the noise occurs but obviously something is not right.
Any ideas welcome.
Thanks