Thanks for a quick reply seco services,
So the actuator stays in the last commanded position, wasn't sure is it was sprung return to H. I'll take a look for the markings on the valve body.
Cheers!
Some advice if possible.
Moved into this property a couple of months ago. Central Heading: Glowworm Hideaway 60B, Landis & Gyr RWB2 controller BGMVSP-23 port, unknown pump and hall thermostat. I think the boiler was installed in 1999. Not sure of other components.
Never really...