if it's not cold all the time you may need to pressure your system back up with the proper freon.
Post Title: Re: A/C Problem (lightsout)
Posted by: loystock at 1:17 AM 7/1/2009
Assuming you are in AUTO mode and the blower is working normally, there are several reasons for your AC problem:
-compressor is inoperative or dying
-A/C compressor clutch is not working properly (check if it engages or not)
-low freon level (maybe due to a leak. If so, fix the leak first, evacuate the system and then recharge with exact amount of refrigerant and oil)
-Dual pressure switch open (maybe due to abnormally high/low compressor pressure)
-defective expansion valve (too low or too high level of refrigerant to evaporator)
-dirty or clogged evaporator (air flow restriction)
-etc.
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