I am unable to get DHW and CH on at the same time, when CH is on switching DHW on cuts power to boiler. When DHW is on, switching on CH will not come on (no led on, on controller)
System: Potterton Kingfisher Boiler,, Drayton SM2 Controller,, Honeywell V40A mid position valve. I believe system is Y type, pumped system.
I have checked the link on rear of Drayton SM2 Controller it is in P (pumped)
All connections in Honeywell junction box are secure.
I moved in 2 months ago it has never worked since moving in.
I found a spare valve motor in a bag under hot water tank so it has been worked/fiddled with before.
Any help greatly appreciated.
System: Potterton Kingfisher Boiler,, Drayton SM2 Controller,, Honeywell V40A mid position valve. I believe system is Y type, pumped system.
I have checked the link on rear of Drayton SM2 Controller it is in P (pumped)
All connections in Honeywell junction box are secure.
I moved in 2 months ago it has never worked since moving in.
I found a spare valve motor in a bag under hot water tank so it has been worked/fiddled with before.
Any help greatly appreciated.