S55 yaar this is bad i can feel what you are going throw.
Yesterday in Rawalpindi Temp was 46c now in pindi isb 42 is hight temp we get normaly and 46c is just too high.
So yesterday night i was getting voltage like 170 to 190v that all and even the stabilizers were not working.
And my bechara kenwood A/C at 200v i can feel the compressor shaking hehe anyways it worked ok in this heat i wont say the room was chilled but it was comfertable
On the other hand Gree air conditioner without stabilizer working on 180v and it was cooling very nicely and even i felt it was comfertable working at this low voltage the compressor noise seems to be ok as well.
Gree Claim there air conditioner works great on low voltage and there claim is right.