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Central heating failure, any thoughts
badlywornroy
Posts: 5 Forumite
in Energy
My CHB (using for hot water only at this time) is shutting down after 1 - 2 mins. Overheat protection it seems.
Boiler is under a Viessmann warranty. Viessmann engineer says boiler OK, suggests the pump is the problem. He cannot do more, just responsible for the boiler.
I was ready to believe the pump was the problem, it is old. New Grundfoss pump. installed, Eeek ! Boiler still shuts down.
3 way motorised valve seems fine, selector moving between heating / hot water / and central for both.
Where do I go from here ? sludged up system ? it was chemically cleaned 4 years ago. In line Magna Clense filter inspected and certainly not blocked.
Any suggestion ? and any experience of Power flushing on a (horrible) microbore system ?
Boiler is under a Viessmann warranty. Viessmann engineer says boiler OK, suggests the pump is the problem. He cannot do more, just responsible for the boiler.
I was ready to believe the pump was the problem, it is old. New Grundfoss pump. installed, Eeek ! Boiler still shuts down.
3 way motorised valve seems fine, selector moving between heating / hot water / and central for both.
Where do I go from here ? sludged up system ? it was chemically cleaned 4 years ago. In line Magna Clense filter inspected and certainly not blocked.
Any suggestion ? and any experience of Power flushing on a (horrible) microbore system ?
0
Comments
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Model and age of the boiler ?What fault code is being displayed ?Any language construct that forces such insanity in this case should be abandoned without regrets. –
Erik Aronesty, 2014
Treasure the moments that you have. Savour them for as long as you can for they will never come back again.1 -
Thanks for your offer of help FreeBear. My boiler is working A1 now. I bled all the radiators and the valve in the airing cupboard and everything is now ok. Phew !
2
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