Hi...being a chiller tech I dont have a lot of experience with splits apart from a couple I have installed at home...my brother in law has been given a small Fujitsu split system that has been removed from an office and has asked me to check it over and install for him (in a bedroom)....model is AOY12RJSF.....indoor unit just says R12A...refrigerant is R22....its around 3.0 Kw cooling and 4 Kw plus heating...I have only glanced at it so far in my garage (currently ill in bed so taking the time to post this)...didnt see an IR port or anything similar so take it that this unit should run with a hardwired controller(it came with no controller either hand or hardwired)..I have a feeling this is going to cause me more trouble than it seems....anyone have any info they can tell me about these units...must be a bit old..cant find much on the web......thanks...John.