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Old 06-01-2011, 09:56 PM   #16
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AC Compressor Fan Motor Wiring


yeah it just might be a sign. it's dark now so I will have to check out the damage in the morning and see what exactly got burned up. like i said this thing is old old old and I fully expect to be replacing it very soon. thanks for your help in any case.

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Old 06-02-2011, 07:55 AM   #17
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AC Compressor Fan Motor Wiring


took a quick look this AM before heading to work to see what was burning from last night. under the contactor relay is some sort of insulating fabric. This was all burned up.
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Old 06-02-2011, 06:30 PM   #18
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fabric? Not sure there unless somehow something was trying to ground it self, or was grounded improperly or shorted to ground...........
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Old 06-02-2011, 07:48 PM   #19
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AC Compressor Fan Motor Wiring


Turns out the fabric was covering the coil on the relay. Apparently whatever I did wiring wise yesterday smoked the coil. Brought it to the HVAC supply and said "I need one of these". Guy was like what is it. Its a contactor relay....oh I've never seen one like this, must be the first one ever made. As we already know my system is pretty much ancient. Buddy of mine came over and we figured out how to wire the new relay...used the 3 wire motor connection instead of 4. Everything is back up and running...house is cool and I am happy. Just need to get through the summer and then a modern system will be installed!
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Old 08-31-2011, 09:14 AM   #20
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AC Compressor Fan Motor Wiring


Hi Folks,

I have the same issue, going from a 3 wire to 4 wire compressor fan motor. I currently have a dual cap and the motor electrical diagram shows the brown and brown/white wires both going to the cap. Can both of those wires attach to the dual cap fan leads? Each of the 3 sections of the cap has 4 leads with only one on each currently being used for the power supply, Herm, and fan sections. Can I just attach both wires to the fan section since there are 4 leads on that section sticking out? Thanks in advance.
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Old 08-31-2011, 02:21 PM   #21
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Think I may have it wrong. Does the brown/white wire simple connect to the dual cap common and the brown the dual cap fan lead? Then the white and black connect directly to the contactor as the original motor white and black wires did? The question about connecting to multiple leads on the same cap section still holds though, I can connect the brown/white from the motor to the cap common even though the power connects there as well correct? If so is this effectively the same thing as wiring the brown/white to the same side of the contactor the dual cap is wired to or is it different due to the cap charging physics?
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Old 08-31-2011, 02:36 PM   #22
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Old 08-31-2011, 03:39 PM   #23
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AC Compressor Fan Motor Wiring


Thanks JJ,

The cap I have is a dual cap. I've modified your diagram to show what I have currently. There is a wire from the compactor to the dual cap supplying the line power (old 3 wire motor wiring), is this still needed or is the brown/white that attaches from the motor now providing the line power to the cap and I should remove the old wire? I assume yes but for fear of opening up a wormhole to another dimension would like to verify. Thanks.
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Old 08-31-2011, 03:49 PM   #24
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AC Compressor Fan Motor Wiring


You need wire from (C) on dual capacitor to the contactor

On the dual capacitor, you connect (H or yellow mark ) to compressor.
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Old 07-14-2012, 03:12 PM   #25
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AC Compressor Fan Motor Wiring


was wondering if you knew about the wiring of an emerson fan motor with 6 wires to a ac compressor? thanks for any help you can provide
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Old 07-14-2012, 03:19 PM   #26
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hey noticed you were on, need some help if you can with wiring an emerson fan motor that has 6 wires, i am assuming 3 are for speed control so it would only be 4 wires in use at a time, i have 2 brown and an orange and a red, black, and blue. lil help please
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Old 07-14-2012, 03:44 PM   #27
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