Salus105rf

[Kylewellman]

Looking for some help please guys.

Just fitted a salus 105rf wireless thermostat, I removed the old receiver and connected the wires to the new one exactly how it was wired before, red light is showing on receiver to show it’s got power and when I turn the heating up with the wireless thermostat the green light turns on and also makes a click noise but the heating ain’t coming on.
There is a 5 core cable from the boiler - live, neutral, earth, no and com.
And a power supply from a socket to receiver 3 core live, neutral and earth.
Could anyone please help me out.
Thanks in advance guys.

 

[CBW]

What boiler is it? Also are you sure that grey wire is common?

 

[Kylewellman]

it’s a British Gas boiler not too sure which one of these 3 models it is.
As for the grey wire, I ain’t 100% sure if it’s common but that’s what it was wired to on the old receiver.

 

[CBW]

It’s the first boiler in list 532i. Is there a timeclock and switch on the front?

 

[Kylewellman]

This was the receiver that I removed, is that what your referring to?

 

[CBW]

View attachment 202585
This was the receiver that I removed, is that what your referring to?

Sort of - what you have removed is a timer and replaced with a room thermostat, which is fine, but think there’s an issue with the wiring.

 

[Kylewellman]

Any idea what that problem could be? I wired it the same as how it was before. Like I said it’s definitely power going to it and also receiving signal from thermostat

 

[CBW]

Do you have a photo of wiring of how it was? Do you have any testing equipment?

Failing that @ianmcd will probably know, he’s a lot better at understanding wiring and Salus controls than I am . (Tagged in so he’ll see it)

 

[Kylewellman]

that’s as good as I got unfortunately. Nope don’t have any testing equipment

 

[CBW]

Ok so wiring does look good, however I think the emt2 had the L and Common linked internally, so you ,any need to link L and Com on Salus.

 

[flameport]

however I think the emt2 had the L and Common linked internally, so you ,any need to link L and Com on Salus.

It did not, doing so isn't required, and if the boiler wiring isn't 230V, doing that will destroy the boiler PCB.

 

[CBW]

It did not, doing so isn't required, and if the boiler wiring isn't 230V, doing that will destroy the boiler PCB.

Boiler switching is 230V ac.

 

[Kylewellman]

Yeah I believe it’s 230v

 

[CBW]

Just been thinking about this on my way home, the ls from boiler will deliver the 230vac (the common), so should be ok. Have you checked the dip switches on the Salus?

 

[Kylewellman]

Yeah all the dip switches are in the correct positions