Thermostat not control boiler

[Kevin potter]

Model is baxi combi 105 HE

 

[heatservice]

Download the manual from here https://www.baxi.co.uk/-/media/webs...105_installation_and_service_manual.pdf?la=en
Is that base plate you posted picture of for your new wireless receiver?

 

[Kevin potter]

No that was the old 1 but the new 1 is same back plate and wired same, this is my new 1

 

[heatservice]

Look at the manual on page 31 is the schematic of the terminal block, remove the link wire between terminal 1 & 2 hopefully everything will then work correctly.

 

[Kevin potter]

Thats abit technical, have i got to unscrew the bottom panel on the boiler then ?

 

[heatservice]

I think its 2 screws then the facia panel hinges down shows it in the manual, one question did your old room stat ever work as if it did then the link may have already been removed, your first post threw me as you said you didn't have a room stat.

 

[Kevin potter]

The original used to work fine but it only lasted a year so i replaced it with same 1 and that only worked for a year and then that stopped working, that was a drayton same as 1 in picture

 

[Kevin potter]

Is the red cable on the left side the link that needs to be removed ?

 

[heatservice]

That red wire is the link which should be removed when external controls are fitted so yours must have been done some other way, remove it and see what happens.

 

[Kevin potter]

So remove that and put it back together and all should be ok fingers crossed

 

[heatservice]

You would expect a wire from boiler terminal 1 to the COM on receiver and a wire linking boiler terminal 2 to ON on receiver. Really cant understand how it ever cut off with that link left in. Good luck

 

[Kevin potter]

Ive done that now the flame symbol is coming on thermostat but the boiler is now not firing up ???

 

[heatservice]

YOU did make sure the clock was ON also

 

[Kevin potter]

Yes clock is on

 

[heatservice]

Sorry looks like you need an electrican, put that link back in a use it as before