When the hot water comes on my radiators get hot.
Prime suspect is the ACL Drayton Lifestyle 679H340-30L0 mid position valve. I can see that the little black position indicator in the right will move between the H and M positions but will not make it over as far as the W side. When the hot water is on I can manually move the little black lever to the W position (which is the side of the valve that then exits to the coil in the cylinder). So I'm pretty sure that the motor is shot. However I'm not convinced that the valve is working correctly even with that lever pushed to W as it still appears that water flows out of both exits (I'm not 100% as I always get home to test it when the pipes are already warm, but I think this is the case). I presume this is a fairly open and shut case of faulty valve? or is there another possibility.
Am I right in thinking that the ACL Drayton Lifestyle 679H340-30L0 doesn't have a replaceable head so I'm going to have to get someone in to change tha valve (If it were just the head I'd have a go myself being an electrical engineer), or is there something I could do myself?
If it does need replacing is that a full system drain down or can they just isolate and drain to below the level of the valve (Its on the top floor of a 3 floor townhouse, there is an isolatinv valve between it and the pump which is directly below it but not to the cylinder coil or heating circuit.
Thanks in advance
Prime suspect is the ACL Drayton Lifestyle 679H340-30L0 mid position valve. I can see that the little black position indicator in the right will move between the H and M positions but will not make it over as far as the W side. When the hot water is on I can manually move the little black lever to the W position (which is the side of the valve that then exits to the coil in the cylinder). So I'm pretty sure that the motor is shot. However I'm not convinced that the valve is working correctly even with that lever pushed to W as it still appears that water flows out of both exits (I'm not 100% as I always get home to test it when the pipes are already warm, but I think this is the case). I presume this is a fairly open and shut case of faulty valve? or is there another possibility.
Am I right in thinking that the ACL Drayton Lifestyle 679H340-30L0 doesn't have a replaceable head so I'm going to have to get someone in to change tha valve (If it were just the head I'd have a go myself being an electrical engineer), or is there something I could do myself?
If it does need replacing is that a full system drain down or can they just isolate and drain to below the level of the valve (Its on the top floor of a 3 floor townhouse, there is an isolatinv valve between it and the pump which is directly below it but not to the cylinder coil or heating circuit.
Thanks in advance