I bought a ductless mini-split system new online last year. It took me about six months to find someone to install it (and to come up with the money). During that time, the condenser sat on the outdoor pad behind my house, with all the lines run, but not connected (I had a handyman dude do that work, I'm renovating a house and had him do all the non-skilled stuff). The lines were corked, but apparently some water got into them, so that when I had it hooked up later, that water circulated through the system. A couple of thousand dollars later, I'm told by the manufacturer's tech (second guy, not the installer -- installer disappeared when he couldn't get it working) that the system is basically ruined.
I've swallowed that and gotten over it, but I'm now curious: how does water in the freon lines ruin the system? The tech replaced the condenser, and also did this thing where he put nitrogen in the lines to try and drive the water out. I have a rudimentary knowledge of how A/C systems work, but I don't see how water would render an entire system useless. Could you guys give me a "for dummies" explanation?
Location is central Texas, the unit is a 36K BTU Freidrich (LG guts) with four fans.
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