K
KenTucky
Hello All. You've helped me before a few years ago so I'm hoping you can now. Boiler is about 10 yrs old. Serviced and maintained by BG throughout. Just before Christmas when we were watching a film on TV I notice a tapping sound, as if you were flicking your thumb against the boiler cover. It happened every 4 or 5 seconds or so. As the boiler is on the utility room wall at the other side of the lounge, you could here this tap through the walls. Got BG out. When I put the boiler on, the tapping started and he said ' it sounds like expansion' and indeed it does, but the boiler has never made a noise as noticeably loud before in 7 years. He took the front cover off, had a prod around but didn't remove anything. He said he didn't know what it was....it was perhaps the chassis or cover, 'but you can't get them now'. He replaced the cover and tightened the bolts. As the sound seemed to have subsided he left. He said he hadn't done anything but would report he'd made an adjustment. Inevitably the sound came back. The tapping starts immediately from cold, so it's not like the outer cover is red hot. The sound is from inside. The sound is not constant more intermittent..perhaps when the flame is lit? I also thought the 'solenoid' buzzy sound at bottom right was also little noiser too but he was not concerned by that. And to cap it all, this morning I noticed the pump seemed to be staying on longer than it should and tonight I find the boiler is also periodically firing up and pump running even though timer is off. Any thoughts? Heat exchanger going? Many thanks.
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