S
SteveyJ
Hi All, I'm new to this forum and have registered as there seems to be a lot of knowledge, and so hopefully someone can help with a problem I have.
I have a gravity fed water system, which is currently running the central heating permanently, not running so it kicks the boiler or pump in but continuously as if the valve is letting by and so water running through the rads, even when the controller on central heating is switched to off.
So what I have is a threeport valve, and have tested the electrics and the central heating side all seems to be operating ok, when the thermostat and controller call for heat the white wire on the motorised valve becomes live along with the orange wire. On the hot water side, the grey wire is permanently live, even with all the controller set to off, and the orange wire becomes live when you tell the hot water to come on, but the grey stays at 240v all the time? Is this correct? I wondered if it was getting a back feed through the cylinder stat, so replaced this and has the same problem. Its not wired back to front either, (number 2 is wired to grey wire and common is to live to controller) I then replaced the motorised valve head for a new honeywell one and still has the same problem.
When I took off the valve body the spring seemed to operate correctly, i.e. when you pull the lever towards you it returns slowly to 'the middle' via the spring, but when it is on the brass body (and even when the brand new one gets put on) the lever is all the way to one side and is very very loose, sometimes it returns slightly to the middle but has small bit of resistance to feel the sprin g when pulled all the way to the end.
So have I done something wrong, is there something I have missed, or is it the actually valve body and something is stuck, or is it the programmer? Either of which can I test somehow?
Hope it all makes sense, and sorry if alot is ramberling, its hard to explain what I mean in words.
Thanks Steve
I have a gravity fed water system, which is currently running the central heating permanently, not running so it kicks the boiler or pump in but continuously as if the valve is letting by and so water running through the rads, even when the controller on central heating is switched to off.
So what I have is a threeport valve, and have tested the electrics and the central heating side all seems to be operating ok, when the thermostat and controller call for heat the white wire on the motorised valve becomes live along with the orange wire. On the hot water side, the grey wire is permanently live, even with all the controller set to off, and the orange wire becomes live when you tell the hot water to come on, but the grey stays at 240v all the time? Is this correct? I wondered if it was getting a back feed through the cylinder stat, so replaced this and has the same problem. Its not wired back to front either, (number 2 is wired to grey wire and common is to live to controller) I then replaced the motorised valve head for a new honeywell one and still has the same problem.
When I took off the valve body the spring seemed to operate correctly, i.e. when you pull the lever towards you it returns slowly to 'the middle' via the spring, but when it is on the brass body (and even when the brand new one gets put on) the lever is all the way to one side and is very very loose, sometimes it returns slightly to the middle but has small bit of resistance to feel the sprin g when pulled all the way to the end.
So have I done something wrong, is there something I have missed, or is it the actually valve body and something is stuck, or is it the programmer? Either of which can I test somehow?
Hope it all makes sense, and sorry if alot is ramberling, its hard to explain what I mean in words.
Thanks Steve