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Old 06-10-2013, 06:41 PM   #1
77newell
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Default Basement Air Control Boards

My new to me 93 coach has basement A/Cs. I've read some about the boards burning up due to the high current loads going to the compressors and maybe the fan motors. I've been wonder if that is such a weak point has anyone considered putting an ac relay in the system between the boards and the motors. My systems are working great and I would like them to stay that way as long as possible.
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Old 06-10-2013, 09:56 PM   #2
GORDON HUMMEL
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Jon
The problem has usually been associated with loose connections. On mine there is a very small box on the compressor unit where the wires from the control box attach. Mine had 10Ga going from the chassis to this compressor connection box & with the other wires for the compressor & fan motor there is hardly room for the wire nuts. I had 12 GA going from the fuse panel to the control box, 12 GA going from the control box to a box by the compressor unit & the 10 GA from that box to the compressor. Because 10GA was so hard to work with & the limited room I changed the 10GA to 12 GA & it has stayed tight for 4 years.
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Old 06-11-2013, 01:34 PM   #3
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Gordon: Thanks for the insight. With your new wiring setup is there any need to regularly check to see that the wire nuts stay tight?
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Old 06-11-2013, 02:05 PM   #4
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I always tape up the wire nuts to make sure they won't come loose.
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Old 06-11-2013, 02:49 PM   #5
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Quote:
Originally Posted by folivier View Post
I always tape up the wire nuts to make sure they won't come loose.
I can't believe tape would ever allow it to become loose.
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