Hey, how bad is the problem? I may help you with technical part if it is still working if it doesn't you better take a new one. When I called the guys from https://www.socool.sg/ to see what is the problem with my A/C they said that it is better to buy a new one. And showed me the prices that their company have, and I searched a few companies that has A/C, guys were right that they has the lowest price. Now I live better.