On 6/2/15 10:34 PM, Stormin Mormon wrote:
On 6/2/2015 12:24 PM, Boris wrote:

capacity. He then measured the temperature of the compressor, and it was
HOT, at 149 degrees. He called back to his company and also to the
American Standard, the a/c manufacturer, for advice/trouble shooting.
All were baffled.

He then took the garden hose and ran water over the compressor cooling
fins, and the compressor started right up and the vent air went from 74
to 71 degrees in a minute, and continued to decline. He surmised that
the compressor was overheating and was shutting down, as it should. But,
no one knows why the compressor gets so hot. The outdoor temperature was
only 80 degrees yesterday. Even if the outdoor temperature is 75
degrees, the compressor gets hot after running for a while and shuts
itself off.


Any thoughts?

TIA


The condenser is clogged with dust, and needs
to be professionally cleaned. Use the purple
stuff. Any good tech would have picked up on
this very simple diagnosis in a few minutes.

Gee whiz, you told the entire class what was
wrong, wonder if I'll be the only simple minded
(but excellent quality) AC tech to pick up on
the answer you handed us on silver platter.

Your guy and tech support "baffled". What a
bunch of maroons.


Maybe he was baffled because he knew the condenser was cooling properly.
Don't you think he checked the temperature of the outlet, with a
thermometer or by touch?

If the condenser were dirty enough to overheat the compressor, how would
he get a 16F drop when it was restarted? Why would it work fine for an
hour or so?

If there's moisture in the freon, most would probably pass through the
expansion orifice. It might take an hour for enough ice to build up, to
block it enough to overheat the compressor. As soon as the compressor
stops, the indoor blower heats the evaporator to 74. No more ice. The
tech starts it can can't find anything wrong.

BTW, remit $247.50 for insultation by insinuation.