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Mend Raven Heat WHITESTAR Combi Fine Heating

Raven heat WHITESTAR combi problem?

Combi been in about 3 years. Works fine on heating side. In the last couple of weeks HW side only provides only warm water. Not hot as before. Setting not changed since installation.

Anybody any ideas... Thanks

Mike
March 2008
Raven HeatRaven Heat WHITESTARHeating, Home Heating SystemsCombi Fine Heating
thanks for that, didnt workthough.

system doesnt start under dhw only, works perfectly on ch side

Mike
April 2008
could be divertor valve sticking slightly in ch, to check.
allow ch sys to cool totally then set hot tap away and feel the ch pipes under the boiler generally 22mm rather than 15mm. if they get mad hot thats your problem.
another possibility is scaled up exchanger giving poor heat transfer to the dhw

iain
March 2008

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