Wiring for baxi 800 with LP722

Hi,

I have a baxi 800 boiler with a Drayton LP722 controller and a Honeywell T6360B thermostat.

I followed the instructions inside to tado app to replace the LP722 controller and everything seems to start up ok but my heating does not seem to work at all.

I'm now not sure if I should've followed the instructions for LP722 or if there is a different wiring setup I should've followed because I have a combi boiler. Any idea?

Thanks for you help.

Geouff