Greenstar RI boiler doing odd things

Joined
2 Oct 2007
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United Kingdom
Not sure if this normal or not, but if my room stat calls the boiler for heat and its a cold start, the boiler will fire up for a few mins then turn off and it will knock at this point the flame icon is on the room stat is there so its calling, if I then leave it a couple of mins the boiler will fire up and its fine.

Had someone out they just suggested a new pump and power flush come in at £1080, before I part with that kind of money (lost job due to covid), I want to really be sure its that and not something else ? I read that you can bleed something in the boiler itself ?
 
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Does your boiler heat up all your rads ,and give you as much hot water as you need ?
If it does ,don't waste your money.
 
Does your boiler heat up all your rads ,and give you as much hot water as you need ?
If it does ,don't waste your money.

Thanks for reply, yeah heating and water fine just a few min delay while the boiler sorts itself out. Does it sound like a sludge? The system has a magnetic filter on I clean out yearly its always covered.

Cheers
 
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Clean the filter more often than you do ,and worry about something else.
 

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