liebert internal fan speed controller

hi guy's

one of our guys was looking at a LMD45 AG05 unit and it appears to have some kind of f.s.c on the indoor unit.

although it doesn't have any sensor connections so it would seem to be a commissioning item..

how necessary is this and what would be the effect of not fitting a replacement ?

bearing in mind that this was the standby unit and they have been both set to 'run' status-ie if it's a dehum issue then the other unit will sort that out...


cheers

richard