Well, i somehow ended up with two MHI SRK35ZJX installed within a foot of each other to cover a 40sqm room. They were meant to be on either side of the room but last minute space constraints didnt allow.

The issue right now that is really really bothering me, is that one of the units works harder than the other. Being identical and next to each other it's easy to tell.

On initial powerup (on auto) when they are both on full blast, the right one steps down much sooner than the other. To keep the room cool, the left one steps up much a lot more often than the other. In some cases, the right one goes back up on full blast while the other is just idling.

Any suggestions other than ripping them apart and installing them seperately?