I had a cooler driving me nuts a couple weeks ago.
Leer ice merchandiser. Ourdoor unit. On the sun side
of the building, which wasn't helping.
When I got there, it would be fine. Nice and cold. The
store owner and also my contact at the company both
told me the ice was melting. But it wasn't happening
when I was there.
Behaved like the condensor was dirty. The usual "not
releasing heat". But, I'd cleaned it with compressed air,
water, coil cleaner, etc.
This was one of the rare "defrost" boxes. Fan (one fan)
through evaporator, and defrost timer. Heater, and drain
line to drain out the back of the box. Most of the boxes
on my route are coldwall. The defrost boxes tend to be
older, and tend to be R-12 units.
Finally, I tried something else, and then think I've figured
out the problem. OK, with the accumulated wisdom of
this group.... what was wrong?
Christopher A. Young
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