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It is a Honeywell V4073A.

Took the actuator off today, the spindle would only move mm's either side. I applied some WD40, it moved a little. I dodn't want to put too much pressure on, as I do not want to snap it. How stiff should this spindle be? When I put the arm to manual, the lever has to be right over to kick the...

It started off in plumbing, but now I think it is electrical. see this

Right had a good look, Changed the witing about a little, basically i had a switched live going into no 9, which i did not need as my boiler doesn't support it. I have changed it back to the N and wired it to no 2 as per the diagram. Pump L has been changed to no 8 aswell. There was a N room...

Hi, I have a Randall 972 programmer Ideal Elan 2 boiler Holywell L641A Clyinder Stat Holywell V4073A Mid position Valve Holywell T6360B Room Stat. Now, the heating stopped working today. I had a look, wife moaning she was cold etc... Called a plumber out. What I have been...