My 10-year old, 5-ton Lennox A/C system started giving me problems
recently. For some time, we have heard a gurgling sound coming from
the attic (where the evaporator/blower is). The sound kept getting
louder and longer. Finally, a couple of weeks ago, the compressor
started overheating and shutting off in mid-cycle; I also noticed the
connections to the outside unit icing up. A repair man came out and
replaced the expansion valve, which seemed to help for a few days, but
now the compressor is occasionally shutting off in mid-cycle again, and
I have noticed ice buildup outside. Is there anything else that could
be causing the problem? Thanks.
Gurgling sounds, freeze-up - Symptoms indicate a possible refrigerant leak.
That is only a guess, we can not diagnosis problems from here!
I am NOT responsible for what you & your tech do.
There is a problem that needs to be addressed!
Read all, you can & get you tech to do the same!
If he uses all of the diagnostic tests available, he will locate the
Air Conditioning\'s Affordable Path to the "Human Comfort Zone Goal"
(Revised - Solving ESP)
You need to have the same guy come out. He needs to change the
expansion valve again. Those go bad pretty often and once in a while
they get a bad batch of them. That should take care of it.
Be prepared to pay for it again though. Its not his fault the valve
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