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I had what was small in my CH system & was advised to try CH leak sealer (a bit like the old RadWeld stuff for car radiators) as all my pipes are behind walls. To cut a long story short I now have globules of what I think is the leak sealer stuff floating in my F&E tank - this has me worried...

Is there a way for a normal plep like me to test if a CH pump is working ? I suspect one of mine is kaput.

I've had major problems with my CH (and HW ) and have spent on £160 to get not very far. To cut a long story short system has been drained,cleaned and filled again. The problem I have now is 1) The boiler won't fire for any more than 2 mins before telling me that it's reached temperature &...