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Mend Ravenheat Boiler Water Central Seconds

Ravenheat Boiler?

I have a Ravenheat RSF84ET boiler which gives out hot water when the central heating is on but when the heating is of it will only warm up for about 10 seconds and then go cold how can i solve this problem

Lee Plummer
June 2008
RavenheatHeating, Home Heating SystemsBoiler Water Central Seconds
This was the thermistor on ours - replaced that, everything was fine. It was about £50 installed.

Dave Smith
July 2008
sounds like a problem with the dhw heat exchanger, it maybe scaled up or partially blocked.

other things to check it the dhw thermister & dhw flow sensor

T
June 2008
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