Baxi Combo 80e fault

Postby Dagman » Sun Nov 07, 2010 11:48 pm

Hi, our heating system (Baxi Combo 80e) has developed a fault. When we run a hot tap we get not very hot water, but the radiators heat up too! The LED display shows no fault. I have checked across the diverter valve microswitch and it has a 6v supply until tapwater demand, then the valve stem comes out and switches it off. The stem coming out would surely mean the valve is ok? Butl other forums say that the valve is usually to blame. The stem coming out puts doubt in my mind. Has anyone had experience with this fault? Many thanks.
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Simply Build It

Postby htg engineer » Mon Nov 08, 2010 6:18 pm

If the radiators get hot, when the hot water is running and the pressure on the system pressure gauge does not rise - then yes it's the diverter at fault.

htg engineer
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Joined: Tue May 22, 2007 5:22 pm

Postby Dagman » Mon Nov 08, 2010 10:06 pm

Thanks for your reply, I have contacted an engineer and described the symptoms and your confirmation. He's coming tomorrow with a new valve. Cheers.
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Joined: Sun Nov 07, 2010 11:26 pm

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