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76 Dodge 440 model 821F ---roof air conditioning unit

Started by , August 29, 2006, 09:24:12 PM

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August 29, 2006, 09:24:12 PM
My roof AC unit will blow air butdoes not cool.  What is usually the problem with these and the fix?
Thanks, Chris

LARRY RAY

#1
August 30, 2006, 01:37:06 PM
MOST LIKELY THE COMPRESSOR IS BAD. IF YOU DO NOT HEAR A LOUD HUM WHEN GOING FROM JUST AIR TO COOL IT'S PROBABLY GONE. COULD HOWEVER BE A BAD THERMOSTAT SWITCH. IT'S JUST ONE OF THE THINGS YOU HAVE TO TRACE OUT. TURN IT TO COOL, WITH THE COIVER OFF THE UNIT CHECK THE VOLTAGE AT THE COMPRESSOR. IF IT IS 110 OR BETTER, BAD COMPRESSOR. CHANGE THE UNIT IT WILL BE CHEAPER THAN REPAIR JOB.
ACOC# 3514
1978--821F-- ser#48851 440 Dodge  Built on a Dream--Still a Dream.  Let's all keep it that way.
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