K
kas
Hi, Need some help.
My CH/HW system has a problem. Everything works fine except for one thing, the heating is not being controlled by the hallway room thermostat, it is permanently on if the programmer is set to heating 'On'. Obviously if the thermostat is turned down below the ambient temperature than the stat should trigger the CH to turn off and vice versa if it is to cool the heating should fire back up, as it has always done since I moved into the house. But alas my heating stays on regardless of stat temperature.
This came to light last night when I put the heating 'on' and after about an hour the heat was obviously above what it should have been, i twisted the stat up and down a few times but nothing cut the boiler off.
I did change the Drayton Ma1 3 port motorised valve during the summer as it was faulty (when hot water selected the rads were partially heating up so valve needed changing). Could the new valve be faulty in some way?
When I turn the room stat slowly around it still clicks at the point the boiler should come on/off, but has no effect, could the thermostat still be faulty even though it 'clicks'.
As I say there are no other faults apart from the heating not been regulated by the room thermostat, it is just either on or off via the programmer.
Please help, what are the chances it is linked to the 'new' valve i installed and being defective. ps I have checked and double checked all the wiring in the airing cupboard with no solution to the problem.
Thanks in advance. kas
My CH/HW system has a problem. Everything works fine except for one thing, the heating is not being controlled by the hallway room thermostat, it is permanently on if the programmer is set to heating 'On'. Obviously if the thermostat is turned down below the ambient temperature than the stat should trigger the CH to turn off and vice versa if it is to cool the heating should fire back up, as it has always done since I moved into the house. But alas my heating stays on regardless of stat temperature.
This came to light last night when I put the heating 'on' and after about an hour the heat was obviously above what it should have been, i twisted the stat up and down a few times but nothing cut the boiler off.
I did change the Drayton Ma1 3 port motorised valve during the summer as it was faulty (when hot water selected the rads were partially heating up so valve needed changing). Could the new valve be faulty in some way?
When I turn the room stat slowly around it still clicks at the point the boiler should come on/off, but has no effect, could the thermostat still be faulty even though it 'clicks'.
As I say there are no other faults apart from the heating not been regulated by the room thermostat, it is just either on or off via the programmer.
Please help, what are the chances it is linked to the 'new' valve i installed and being defective. ps I have checked and double checked all the wiring in the airing cupboard with no solution to the problem.
Thanks in advance. kas