Baxi duotech 33

[Sambo01]

Hi folks,

Need a little help please. I have a baxi combi boiler with a wireless receiver and thermostat! I have been havin problems with the thermostat so I bought a new Siemens RAA20!

It kind off works, when I test the terminal block on the boiler it is switching over with the new thermostat but not putting the boiler or pump on!

If I connect the wireless receiver it and old thermostat it then works as it should!

Do I need to cut the plug off the wireless receiver and terminate the 2x terminals for the motor together and the 2 x terminals for the switching contacts together?

Hope this makes sense.

Thanks

 

[Sambo01]

Can anyone help? Have I posted this in the wrong section?

Thanks

 

[ServiceNumpty]

Do you have the inbuilt clock on the boiler, is that set to permanently on. I'm trying to remember the RAA20 i'm guessing it is a manual thermostat, which has 3 contacts, LX, lx1 & LX2. So from the boiler connections you connect live out to LX & LX1 to live in I believe, although it has been a couple of years since I saw the Siemens Stat.