Hi Jack, hope you are having a nice day
On 26-Jun-05 At About 02:15:54, Jack Sandweiss wrote to All Subject: Re: Corsair AC unit squeaks loudly---new symptoms
JS> From: Jack Sandweiss
JS> No, it is a separate AC outside. I have an Apollo (water) heating JS> system, but, AFAIK, that is totally independent of the AC. I've been JS> told by many that the whoosh is normal on shutdown of the AC. But, JS> now it is occuring intermittently during operation, with or without JS> an accompanying squealing, which sounds to me like a motor that JS> needs oil. I know about motors, but not AC units. The squealing JS> has a "revolving" rhythm to it. The fan is "self-lubricating".
if this is an A/C only this sound is not normal. what you are hearing is the compressors internal relief valve opening to relieve excess pressure. you should turn the unit off immediately before it is permanently damaged.
JS> I'm trying to avoid buying an entire new unit, if, replacing the JS> condenser motor is all it needs. Thanks for your reply.
if you turn it off now and have it repaired it may be ok but it could have been damaged already. sometimes these internal relief valves can open and stay opened which means you will need a new compressor. of course running this long with the valve opening has also put quite a strain on the system but if you get it repaired it could last for several years or it could fail in a week, a day, Etc...
-=> HvacTech2