The boiler was already in the house when I bought it last year, but it's been there since the property was built in 2003. After about 30 mins of use, the boiler makes an alarming clanking and banging noise, and then settles down - only to repeat the cycle again 15 mins later. Also, when the DHW is on without CH, I find I can have a shower without a problem, but once I turn off the flow of hot water, the boiler will not reignite automatically if I run the shower (or a hot tap) again. The boiler makes a low humming noise at this time. I have found, by trial and error, that if I switch the central heating on, the boiler will reignite and I can restore the DHW.
I've taken the outer casing off the boiler and can see that someone has wrapped red tape around the part of the boiler that is banging (on the left hand side). I am a bit worried in case it's some sort of 'pop off' safety valve that's being held closed. I've posted a photo in the album 'Ideal Mini'
Boiler pressure is constant at 0.7bar, which the manual says is correct.
Can anyone tell what the problem and whether it's a DIY repair? Is the red tape a safety hazard? Any help would be gratefully received.
I've taken the outer casing off the boiler and can see that someone has wrapped red tape around the part of the boiler that is banging (on the left hand side). I am a bit worried in case it's some sort of 'pop off' safety valve that's being held closed. I've posted a photo in the album 'Ideal Mini'
Boiler pressure is constant at 0.7bar, which the manual says is correct.
Can anyone tell what the problem and whether it's a DIY repair? Is the red tape a safety hazard? Any help would be gratefully received.