Thermostat wiring, Danfoss to Honeywell

[grouchostash]

Hi all,

My Danfoss thermostat stopped working. I have a Honeywell replacement. I thought this would be a simple sway, like for like wiring but they are lettered differently.

I'd really appreciate some guidance on how to translate the old connections to the new unit. Pictures below.

Thanks!

FYI, we have a combi boiler.

First the current set up:

The diagram:

The new unit:

 

[stem]

2 COM = A
3 NO = B

 

[grouchostash]

Excellent, heating is on

Thanks!