I have had a few problems with my system and have replaced the pump, mid position valve and controler over the last year.
i wired them all back up with the diagrams that i was given when i got the house.
this cause me an issue where I could not get the mid position valve into the mid position, so I started to look at how it was wired up.
a guy who does plumbing and heating local to me gave me the wiring diagrams he uses and said to use them and it should fix the issue.
he uses the mid position valve system with LWC3 junction box diagrams.
so I have wired my system to this diagram, but I am an bit stuck with the pump overrun from my boiler, it is a glow worm ultimate 50FF.
the way i have it at the moment the boiler keeps cutting out on overheat and the last time the boiler did this the pump had gone, now I know the pump is ok so I am thinking I have not got the pump overrun wired corectly and this is why the boiler is cutting out
I have three wires coming out of the boiler
a Blue conected to PN
a Brown conected to P
and a green and yellow conected to SL.
I have conected the Blue PN to the neutral junction 2 in the LWC3 junction box.
I have conected the green / Yellow to the Live junction 1
and I have got the Brown P in the spare junction 10.
I have also taken the pump live out of Junction 7 and put this into the junction 10.
i thought this would make the pump overrun work, but this is now causing the boiler to cut out on overheat
where should I be putting the PN,P & Sl from the boiler and do I need to move any of the other wires.
Many thanks
Tango
i wired them all back up with the diagrams that i was given when i got the house.
this cause me an issue where I could not get the mid position valve into the mid position, so I started to look at how it was wired up.
a guy who does plumbing and heating local to me gave me the wiring diagrams he uses and said to use them and it should fix the issue.
he uses the mid position valve system with LWC3 junction box diagrams.
so I have wired my system to this diagram, but I am an bit stuck with the pump overrun from my boiler, it is a glow worm ultimate 50FF.
the way i have it at the moment the boiler keeps cutting out on overheat and the last time the boiler did this the pump had gone, now I know the pump is ok so I am thinking I have not got the pump overrun wired corectly and this is why the boiler is cutting out
I have three wires coming out of the boiler
a Blue conected to PN
a Brown conected to P
and a green and yellow conected to SL.
I have conected the Blue PN to the neutral junction 2 in the LWC3 junction box.
I have conected the green / Yellow to the Live junction 1
and I have got the Brown P in the spare junction 10.
I have also taken the pump live out of Junction 7 and put this into the junction 10.
i thought this would make the pump overrun work, but this is now causing the boiler to cut out on overheat
where should I be putting the PN,P & Sl from the boiler and do I need to move any of the other wires.
Many thanks
Tango