hi iam working in thermal power plant
we have about 200 split r22 unit
4 ton.2ton and other and working very good
but some times remp rises to 60 or 70 c in some rooms
as so these unit stop working
because of high ambient temp ( i heard the r22 max range is 53 c)
before a month we recieved new ac unit work on r410 as i know max temp range is 68 c
problem is their cool effect was too weak >(not very cool")
we thought problem may be from bad ac manufacturer
so we tried another ac unit with same prob
so waht u advice me to
max summer temp in iraq reached 51 c