No aircon after LCI controls retrofit
 

Hi guys new here and looking for some help.Ive done a great deal of searching and cannot find a solution anywhere.
OK so mine is a 530D 2003 with standard heating. Basically what Ive done is swap out the standard heater controls for the basic LCI ones.
I prefer the look of the silver knobs. Everything works except the air con. The button lights up but the compressor doesn't kick in and it throws
up a fault in INPA. Im quite familiar with NCS and coding and ive reset the IHKA module back to default. Can anyone shed some light?
any help would be greatly appreciated.
https://cimg6.ibsrv.net/gimg/5series...6ac9637751.jpg
https://cimg7.ibsrv.net/gimg/5series...9d2dd36560.jpg