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    Drayton Zone Valve Actuator ZA6 not reading Danfoss Programmer??

    Hi Everyone, Very new here and made an account for some advice and guidance. Here's hoping you can help! I have a Worcester Greenstar 40cdi system boiler that is hard wired to a Danfoss FP715Si 2-Channel programmer for heating and hot water. The boiler has a Danfoss HPA2 actuator and a...