Got some good news. My replacement outdoor unit should be shipped next week!
It was 70 today, so I flushed the line-set with nitrogen to see if there was any lube in the copper.
If there is any in there, I didn't see it.
The wires are all disconnected, so all I have to do is take off the line set, to be ready for the new unit.
I put on the vacuum pump and ran it down to 300 microns. An hour later, ran it down again.
Took a minute, since the first vacuum held ok. I'll use fresh pump oil when the new unit comes.
This time, I can skip the pressure testing.
The wires are all disconnected, so all I have to do is take off the line set, to be ready for the new unit.
Once installed, I'll run the vacuum down for a few hours while I locate
my licensed AC pro, to release the R-410A.. Hopefully, it will be a warm day.
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