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.
- posted
17 years ago