Mahindra air conditoner issues

[yanmars]

My Mahindra 4510 air conditioner did not cool. A dealership got it to work, recharged it as I understand. Worked well for several months and back to the same problem. Is there a way to inject a dye or a process to see where the leak occurs so this will not happen again? Thanks

 

[Sysop]

That would be something the dealer should do upon filling it again.