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baxi eco 80?

central heating is fine, but the hot water only comes on when two taps running
rk, December 2010
Rubber diaphragm in div valve is on its way out - you can buy a repair kit for it, but be careful if you do it wrong water goes onto circuit board and will cost you a fortune, recommend a professional does this particular job, or remove circuit board first good luck

Stag Heating TMSGAS, December 2010
hi

suspect diverter valve? Think it needs to see drop in pressure.. I think the valve requires cleaning, may be rusty spring or build up of lime scale etc..

mark, December 2010
link Click here to see other fixes for Baxi.