u/EusticeTheSheep

We have a Mitsubishi PUZ-A36NKA7 and MPVAA36AA7 install is two zones. Yes it’s probably oversized, despite asking for calculations I kept getting told it wasn’t needed including by the advisor from the electric company that was providing rebates. Moving on…

Once or twice a year I’m paying for a tech to come and do maintenance on it, it’s about 3.5 years old at this point. They never do the same thing. This last guy cut open the clear plastic on the wire bundle to hang some sort of voltage tester on the black wire. He didn’t explain why despite being asked. He did say that they do not check coolant pressure because that causes coolant loss on this system (um, the last guy checked but ok?)

How can I find out what I should expect short of trying to contact Mitsubishi?

Edit: added air handler