Hi bro,
Since your chiller is used only 6 month duration, I would advice you to change the fan motor instead as the cost is about 95 buck only. If you buy the motor from SLT, it'll cost you 30~50 buck (depend on brand, motor size, watt) and sometime you need to change fan blade as well due to compatible issue and produces rubbing sound.
IMHO, the most expensive part in the chiller is the compressor, if breakdown....throw away and get new one..... !
Btw, if you decided to throw away and get new one, give it to me lor.... !