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Mend Ravenheat RSF 820/20 Heating Pressure

is it going to be expensive?

i have a ravenheat rsf 820/20 boiler, cant get hot water unless heating in on constant also the pressure dial has stopped working. thanks

shirley.
October 2009
Hi, the possible solution to this has problem has been answered in another forum here, have a look at that first, it may help regarding hot water issues. It will be the diverter valve, a few issues can stop it working as described in that forum. Hope that helps, if you are a competent DIYer it will cost no more than £50 (but shop around on line - some diverters for this model retail for around £200) the after market ones from italy are cheaper. If you want to strip the diverter valve and put in a new diaphragm it can be fixed for less than a fiver!

Steve
January 2010

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