Debbie and I removed our Mermaid marine 5200 btu HVAC unit and drove it over to Hector Marine here in La Paz. (A previous HVAC tech in Puerto Vallarta trouble found the problem to be the TXV valve. (We picked up one in the US this summer).
We picked up our unit at Hector's Marine yesterday...Debbie and I re-installed it in the hanging locker. It is now cooling just great again! Life is good. This unit will do just our stateroom and head or just the stateroom if we want to at night etc, saving our electric bill if we choose; not to run the big unit and cool the whole boat.