New Smart Thermostat Install, No Call to Heat

[shmoggon]

Hi, I have installed a Tado system to an Alpha boiler (Intec2 28XE)

I don't have any reported errors on the boiler or the Tado system itself, but the radiators are not turning on when trying to get the heating on in the system

This is clear from the display as there should be a radiator icon when radiators are calling for heat

I've attached a photo of the setup. The black cable is connected to CH COM on the Tado wireless receiver and the grey wire is attached to CH NO. I've not made use of any of the purple link cables

I've been doing a bit of reading up on this and I can see that the issue could be that the Alpha RF wireless receiver may be overriding the Tado. The receiver seems to be picking up signals, I've set all the outer tappets, set the maximum temperatures for both max and min. When the boiler understands that a change has been made, it acknowledges that as the light blinks.

I've saw that if I remove the batteries, and I press the button in the middle, it should also come on, but it hasn't.

I would have a bash at wiring the existing cables from the Alpha RF straight into the Tado itself, but I can't get the bloody clips off the device, and while I could cut it - I'm hesitant in case I f that up and have loose, unterminated wires

Thanks,

 

[RandomGrinch]

I've been doing a bit of reading up on this and I can see that the issue could be that the Alpha RF

Yes, that's likely the problem.
The rear of the Alpha receiver, should look something like this...

In the above image, the wires connected into terminals 3 and 4, would need to be connected together, to 'link out' the receiver.
If you can post an image of the rear of yours, we can confirm.

 

[shmoggon]

I'm really struggling to get those clips off

 

[RandomGrinch]

I'm really struggling to get those clips off

If you can get clip 4 off, connect it instead to terminal 5.
Otherwise, don't worry about the clips, cut the red wires from 3 and 4, and join them together in a single terminal block.

 

[shmoggon]

Greatly appreciated

Would placing 3 and 4 into one of the wago's that come with the device be okay?

 

[RandomGrinch]

Greatly appreciated

Would placing 3 and 4 into one of the wago's that come with the device be okay?

Yep, fine
(Isolate power first!)

 

[shmoggon]

Thanks you saved me a couple hundred quid, much appreciated. DM me your paypal and I'll chuck some money over for a pint

 

[RandomGrinch]

Thanks you saved me a couple hundred quid, much appreciated. DM me your paypal and I'll chuck some money over for a pint

Don't be silly!
Glad you got it working.
Enjoy your Tado, and stay warm.