M
Moggs
Hi all. I hope that somebody can help me to get on top of a wasted weekend. Vented system Potterton Prima 50F boiler was kettling for a while so I decided to drain down and refill, adding X200 descaler. The drain-down went OK yesterday, but I have had problems refilling and getting the system to work.
I expected some issues in getting air out, but never this much! Some of the downstairs rads filled quite quickly but some were slow to release air. Couldn't get air from quite a few upstairs - they seem to be sucking air rather than venting. I'm wondering whether water is getting down from the f&e tank(?)
Manually opened the diverter valve to see if this woud help. Spent an afternoon of trying to get air out, eventually adding water down the air relief valve open port (airing cupboard), as the pump hadn't primed (rising leg from the pump) which seemed to refill the system and got the boiler working (it didn't try to jump off the wall and throw the safety trip since the top up).
Boiler 'worked' up until I switched all off last night. This morning, switched the main electrical supply on again and found that the boiler was noisy again, rattled badly and then tripped. Topped up via the air relief valve again and boiler partially works again but, only with certain settings on the programmer (this results in hot water going to the rads, even when only water heating is called for. Another complication now is that the programmer sometimes doesn't allow me to manually operate h/w or c/h select buttons.
I didin't have these problems on an earlier system flush and I'm wondering what can have gone wrong after what should have been a simple drain and refill. Any suggestions appreciated. Thanks.
I expected some issues in getting air out, but never this much! Some of the downstairs rads filled quite quickly but some were slow to release air. Couldn't get air from quite a few upstairs - they seem to be sucking air rather than venting. I'm wondering whether water is getting down from the f&e tank(?)
Manually opened the diverter valve to see if this woud help. Spent an afternoon of trying to get air out, eventually adding water down the air relief valve open port (airing cupboard), as the pump hadn't primed (rising leg from the pump) which seemed to refill the system and got the boiler working (it didn't try to jump off the wall and throw the safety trip since the top up).
Boiler 'worked' up until I switched all off last night. This morning, switched the main electrical supply on again and found that the boiler was noisy again, rattled badly and then tripped. Topped up via the air relief valve again and boiler partially works again but, only with certain settings on the programmer (this results in hot water going to the rads, even when only water heating is called for. Another complication now is that the programmer sometimes doesn't allow me to manually operate h/w or c/h select buttons.
I didin't have these problems on an earlier system flush and I'm wondering what can have gone wrong after what should have been a simple drain and refill. Any suggestions appreciated. Thanks.
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