Hi all,
I have a Baxi Solo 2PF boiler supplying hot water & central heating via a Landis & Gyr 3 port mid-position motorised valve, part number MAV-322
Just recently, I was not getting any central heating, only hot water. The only way I am able to get central heating is to manually open the valve with a lever on the side and turn up the thermostat on the cylinder in the airing cupboard. Not an ideal solution as I'm getting scorching hot water, but at least the house is warm!
Where do I start diagnosing the problem? I'm guessing it could it be a problem with the motorised valve not opening. Is it possible to replace just the motor, which I could do myself, or do I need to replace the whole valve? In which case a plumber would be required.
I'm also a bit confused how the boiler knows to fire up to heat the water for the central heating as I don't have any room thermostats in the house only individual themostatic valves on each radiator. Could someone please explain how it works?
Another thing, I'm thinking of replacing the old Landis & Gyr mechanical timer control panel (can't find a part/model number, but from a Google search it appears to be an RWB2? A picture is attached below) with an electric version as although it's set to "twice" for both hot water and central heating it is operating as though it's set to "once". Is it as simple and removing the old control panel from the backplate on the wall and replacing it with the new one? Or do I need to also replace the backplate on the wall as well?
Any help on any/all of these matters would be greatly received.
Thanks in advance!
Mark
Landis & Gyr Timer Control Panel
I have a Baxi Solo 2PF boiler supplying hot water & central heating via a Landis & Gyr 3 port mid-position motorised valve, part number MAV-322
Just recently, I was not getting any central heating, only hot water. The only way I am able to get central heating is to manually open the valve with a lever on the side and turn up the thermostat on the cylinder in the airing cupboard. Not an ideal solution as I'm getting scorching hot water, but at least the house is warm!
Where do I start diagnosing the problem? I'm guessing it could it be a problem with the motorised valve not opening. Is it possible to replace just the motor, which I could do myself, or do I need to replace the whole valve? In which case a plumber would be required.
I'm also a bit confused how the boiler knows to fire up to heat the water for the central heating as I don't have any room thermostats in the house only individual themostatic valves on each radiator. Could someone please explain how it works?
Another thing, I'm thinking of replacing the old Landis & Gyr mechanical timer control panel (can't find a part/model number, but from a Google search it appears to be an RWB2? A picture is attached below) with an electric version as although it's set to "twice" for both hot water and central heating it is operating as though it's set to "once". Is it as simple and removing the old control panel from the backplate on the wall and replacing it with the new one? Or do I need to also replace the backplate on the wall as well?
Any help on any/all of these matters would be greatly received.
Thanks in advance!
Mark
Landis & Gyr Timer Control Panel