Recent content by jondub

Thanks everyone for your help, In semi-desperation I bought another valve head, this time a genuine Honeywell one, and hey presto all is well, heating is back on. I'm not 100% sure what was wrong with the Corgi replacement, it certainly looks the same as the original. John

By indicator do you mean the lever that can put it in auto or manual? I can't see any other indicator on there. With the room stat only calling for heat the lever has moved over to the right but it's loose so can be moved anywhere. In any other state the lever sits roughly in the middle and...

I'm not sure TBH, it certainly moves but how do I tell if it's in position A?

The valve does move but I'm not sure if it's doing everything it should. With both the room stat and HW stat set to low I get 0V on the orange. When I turn the room stat up only, the motor moves and I then get 150V on orange, but the boiler doesn't light. When I then turn the cylinder stat up as...

Thanks, the original Tower valve head is marked "22/28mm Mid position valve A3MID". The Corgi part I replaced it with is "22/28mm Mid Position Valve Actuator A3MID-C", it certainly looks compatible. I'll double check all the connections.

Hi, My Y-plan system has today decided that it's only going to run the boiler when it needs to heat the water, but not when the room stat only is calling for heat. Thinking it must be the 3-way valve I replaced the valve head but it's no different. I tried the valve in the manual position, I...