Upon inspection found mini split for the fire riser room isnt cooling. Possible leak within the system. Perform nitrogen leak test, repair leak if possible, vacuum and recharge to factory spec. Additional quotes may be required if leak is found in non repairable location. 8/8/23 Arrived on site and gained access to the rooftop. Preformed a nitrogen leak test and used bubbles to find any potential leaks within the coils. Did a bubble leak test on whole set line, and found nothing. There could possibly be a very tiny pin sized leak within the coil, but had a challenging time trying to find it. Charged the unit with 2 # of refrigerant. System is currently running and cooling. I did mention to Carlos (maintenance) that if this does occur again, I would highly recommend replacing the mini split with a new one. MOD Katlyn K.