E92 driver's window and AC problems

Hi guys,

I'm in desperate need of help; driver's window keeps going up and down only on clicks on my '07 e92 35d, sometimes it even gets stuck in one position and won't go up or down, window motor changed (scissors), reinitialization tried, frm module repaired by a professional and still doing the same thing. Now about the AC, ventilation works, but when you put AC (snowflake) on it won't blow cold air and on diagnostics it throws out IHKA module failure, can anyone please help, these problems been bothering me for a while now.

Thanks.