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Combi Boiler- variable water temperature
Posted: Tue Jun 26, 2007 9:24 pm
by rdelisle
Hot water changes temperature from hot to warm and back to hot etc.
Is there a common cause please?
Posted: Wed Jun 27, 2007 7:53 pm
by toneyt
sounds like scaled heat exchanger,what boiler is it?
Combi Boiler- variable water temperature
Posted: Fri Jun 29, 2007 7:20 pm
by rdelisle
Hi, its a Baxi Combi 80e
Posted: Sat Jun 30, 2007 5:10 pm
by toneyt
commonly the domestic heat exchanger will scale up/block does the boiler fire up then off ,cycling on and off as this can indicate the boiler reaches temp internally then cuts as it senses too much heat,but the water temperature is moderate,
secondly check too see if the central heating pipes heat up at the bottom of the boiler as this could be the diverter valve letting by,in this case the boiler would remain on and not cycle on/off
T
Combi Boiler- variable water temperature
Posted: Tue Jul 03, 2007 3:23 pm
by rdelisle
Thanks very much. Where would I go for info on descaling. The Boiler Manual is curiously silent on problem solving.
Posted: Tue Jul 03, 2007 6:01 pm
by toneyt
i wouldnt bother descaling get a new one and fit a scale reducer to help slow the problem down for the future
Combi Boiler- variable water temperature
Posted: Wed Jul 04, 2007 1:16 am
by rdelisle
OK.
Thanks for all your help.
Much appreciated.