Hi All,
Wondering if someone more knowledgable than myself can give me thei opinion? I have a Honeywell Sundial Y plan heating installation which utilizes
3 port midposition valve. I currently have a problem where my rads ar still giving of heat when the CH is set to "off". It seems to me from little investigation that this is being caused by convection through th 3 pos valve. I have removed the valve cover and observed the moto functioning correctly! Can these valves fail machnically whilst the motor still works? Woul the simplest coarse of action be to replace the entire valve assembly?Any comments and suggestions will be gratefully received
-- matthewh