Honeywell 3-port motorised valve, Danfoss cylinder stat, Danfoss room stat, Ideal Elan 2 boiler, Randall Set5 programmer. System working fine for a couple of years (since I moved in).
Hi all,
Problem: HW was working fine, but no CH. Moved power head on motorised valve to open position using manual lever and CH works again!
Decided synchronous motor was to blame so changed it (generic motor £10 from local plumber's merchant). However, still no CH without using lever on power head! Tried all possible permutations of CH and HW demands but nothing causes the valve to move from its "off" position (just HW working).
To complicate matters, when the valve is in "off" position (ie. spring has pulled it back), and I put the CH on, no movement occurs. However, if I manually move the valve to the mid-position (using the lever), and put the CH on, the valve moves all the way to the position furthest from "off" (240V is seen at motor). Does this mean one of the micro-switches is broken? If so, any ideas which one?
Thanks for any help!
Duncan
Hi all,
Problem: HW was working fine, but no CH. Moved power head on motorised valve to open position using manual lever and CH works again!
Decided synchronous motor was to blame so changed it (generic motor £10 from local plumber's merchant). However, still no CH without using lever on power head! Tried all possible permutations of CH and HW demands but nothing causes the valve to move from its "off" position (just HW working).
To complicate matters, when the valve is in "off" position (ie. spring has pulled it back), and I put the CH on, no movement occurs. However, if I manually move the valve to the mid-position (using the lever), and put the CH on, the valve moves all the way to the position furthest from "off" (240V is seen at motor). Does this mean one of the micro-switches is broken? If so, any ideas which one?
Thanks for any help!
Duncan