Hi All,
I'm getting to the end of my tether with our boiler. It has a few of the seemingly common issues people complain about on these forums but nothing that means it dosn't work day to day:
It appears to be kettling in the heat exchanger (kettling is where it sounds like a kettle when heating the CH isn't it?!)
The DHW temperature control won't go past the halfway point without it overheating and cutting off. (I've replaced the CH temperature sensor with no difference made - maybe it's the overheat stat failing?)
The CH appears to cycle quicker than it should. (Possibly related to the two above issues?)
Recently though, it has developed a really annoying problem in that when the DHW is active the boiler vibrates like crazy, causing the whole house to groan as the vibration feeds through all of the central heating pipework. I've checked all of the combustion chamber panels, fan, etc. are all fitted securely and nothing obvious is loose. The vibration appears to originate from the heat exchanger but effects the CH circuit more so than the DHW. When just the CH is on there is no vibration, it only occurs when DHW is demanded. It happens if the boiler is hot, cold and with both CH on and off.
You can actually feel the vibration throughout the house by touching the radiators, it's that bad.
Does anyone have any suggestions? I'm no plumber but logic and common sense (ha ha) suggest there may be something wrong with the heat exchanger, attributing to all of the problems I have. I'm open to anything that might help!
My thoughts are that it could be bearing problems with the fan; it could maybe some weird air lock in the heat exchanger; it could be the pump failing; or it could be something more obvious that as a non plumbing engineer I've not considered!
I'm getting to the end of my tether with our boiler. It has a few of the seemingly common issues people complain about on these forums but nothing that means it dosn't work day to day:
It appears to be kettling in the heat exchanger (kettling is where it sounds like a kettle when heating the CH isn't it?!)
The DHW temperature control won't go past the halfway point without it overheating and cutting off. (I've replaced the CH temperature sensor with no difference made - maybe it's the overheat stat failing?)
The CH appears to cycle quicker than it should. (Possibly related to the two above issues?)
Recently though, it has developed a really annoying problem in that when the DHW is active the boiler vibrates like crazy, causing the whole house to groan as the vibration feeds through all of the central heating pipework. I've checked all of the combustion chamber panels, fan, etc. are all fitted securely and nothing obvious is loose. The vibration appears to originate from the heat exchanger but effects the CH circuit more so than the DHW. When just the CH is on there is no vibration, it only occurs when DHW is demanded. It happens if the boiler is hot, cold and with both CH on and off.
You can actually feel the vibration throughout the house by touching the radiators, it's that bad.
Does anyone have any suggestions? I'm no plumber but logic and common sense (ha ha) suggest there may be something wrong with the heat exchanger, attributing to all of the problems I have. I'm open to anything that might help!
My thoughts are that it could be bearing problems with the fan; it could maybe some weird air lock in the heat exchanger; it could be the pump failing; or it could be something more obvious that as a non plumbing engineer I've not considered!