An HVAC contactor (who was a friend of a friend) installed my Mitsubishi minisplit Heat pump for a very reasonable price, but told me that he did not have his equipment to do "purge and leak test". He is not from the area so I can't get him back over anytime soon....so he advised me to call a local HVAC person to come out and do the "purge and leak test".
I admit that I wanted to see if the thing worked, so I installed the 15 amp breaker in the Circuit Breaker board and turned in on. I got the standard blinky error light that indicated the outside and indoor units were not communicating. I know for a fact the wiring is correct. I even have stranded wire for the communication wire...anyway....
I will be calling a certified HVAC contractor in to do this purge and leak test next week, but now I'm wondering if the guy even hooked the thing up right.
I guess my question is, is the Purge process with a vaccuum pump necessary for the thing to work to begin with and could that be responsible for communication error light? I only turned it on because I thought the purge process was only to make sure there were no impurities, etc. in the pipe.
thanks for any insight.