Godrej Appliances — Inverter 1.5 ton AC

I got this AC on May 2018 it worked good for a year and after that Ice started forming and falling from the inner vent.
Last year I called Godrej customer care for servicing and a 3rd party service centre people visited. They cleaned the mesh and the inner unit and suggested they would like to check the gas for cooling. Post checked they said need to refill gas, which we need post paying rs. 2, 500/-.
Within 2 week again ice started falling when I called this technician he said I can myself clean the mesh and that should solve the problem.
Ever since last year whenever we use the AC every 15 days we have this issue of Ice falling merely after using for 2 hours in night and we have to off the AC post that. I don't understand why does this happened but there should be a permanent solutio. For this. We have another brand AC at home since 5 years and that never has this problem of ice forming, so I guess MI brand is better than Godrej...coz with that AC we never faced such a issue.