Hi hope someone can help me, it’s a bit of a long story so sorry in advance.
Around 10 months ago we had a power cut and when the power was restored, we got a bit of a surge. Didn’t realise that it had impacted on our central heating until we woke up in the middle of the night with the water and heating going full blast and the controller showing no on lights. Only way to turn it off was to turn it off at the mains.
I call Dryton who said this could happen due to the micro switch being damaged in the surge. They said take the controller off give it a bang and see if that helps the micro switch.
All fine for a few weeks and it happened again, seemed to happen after we had used the advance switch. Next step was to replace the controller, bought another Drayton (LP522) and within a week it had happened again. Phoned Drayton who said it must be the actuator, change it. I called my regular plumber who said can’t be that as the actuator wasn’t powered so can’t override anything! He said he had come across a similar problem and to change the controller to a different make, that sorted it before. So I changed the controller to a Honeywell (ST9400C). All has been good for 6 weeks and then last night even though the heating and hot water timings had gone off, the hot water was getting hotter and he radiators were piping hot, no lights on the controller and the thermostat was not working as no power to it. Only way to stop was again to turn off at the mains.
Anyone come across something like this before, if so what was the solution.
Any help much appreciated, Happy New Year
Tony P
Around 10 months ago we had a power cut and when the power was restored, we got a bit of a surge. Didn’t realise that it had impacted on our central heating until we woke up in the middle of the night with the water and heating going full blast and the controller showing no on lights. Only way to turn it off was to turn it off at the mains.
I call Dryton who said this could happen due to the micro switch being damaged in the surge. They said take the controller off give it a bang and see if that helps the micro switch.
All fine for a few weeks and it happened again, seemed to happen after we had used the advance switch. Next step was to replace the controller, bought another Drayton (LP522) and within a week it had happened again. Phoned Drayton who said it must be the actuator, change it. I called my regular plumber who said can’t be that as the actuator wasn’t powered so can’t override anything! He said he had come across a similar problem and to change the controller to a different make, that sorted it before. So I changed the controller to a Honeywell (ST9400C). All has been good for 6 weeks and then last night even though the heating and hot water timings had gone off, the hot water was getting hotter and he radiators were piping hot, no lights on the controller and the thermostat was not working as no power to it. Only way to stop was again to turn off at the mains.
Anyone come across something like this before, if so what was the solution.
Any help much appreciated, Happy New Year
Tony P
