Pipes going to UFH cold

[mgrover]

bit of an odd one. UFH been working fine for about a year or two now.

today the pipes going to it before the zone valve are stone cold.

its a very basic system with Hive thermostatic valves controlling the rads upstairs and the zone valve downstairs.

Could the pipe be blocked?

 

[mgrover]

Ah nevermind figured it out. Basically the zone valve had got stuck shut. Its a honeywell one shock horror.

Anyways I force it into the open position and everything went back to working. Put it back to the normal position and so far so good.

 

[mgrover]

ended up replacing the synchro motor on it.

bit odd its died tbh given its only been around a year and a half.

but that is from a lot of running every 2 hours

finally had loft insulation and cavity wall insulation installed today.