My heating system has recently developed a fault. When only 'Hot Water' is selected on the controller, my radiators are heating up as well. I'm assuming the '3-way valve' is a key area to be looking at. However having read other queries, is there two types? How do I identify which mine is? . The valve positioner is a Danfoss type HSA 3. (T45). Can anyone advise a way of determining what the fault is or is it a case of replacing the head unit. C/H works fine. Thanks for any suggestions offered.
Central heating has got me in hot water (3 port valve?)
- Thread starter Dasp
- Start date
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sounds like debris on the neoprene ball in the div valve lets water into the heating circuit.change div valve complete sorry
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