Original message
| BAGGINS
 |  "Too many wires"
, posted Thu 21 Feb 17:53  
Our Day & Night 395CAV started producing "burnt" smelling air when the heat came on. After a day or two the blower stopped coming on. The impeller runs, the burners light, and the fan relay seems to "click" at the right time, but no blower. I guessed that the 10 year old fan motor was toast. I bought a replacement (the original GE motor is NLA) A/O Smith motor, but I am stymied by the wiring. I think the black, red and blue wires go to the same terminals, and I think the the yellow wire must be the common as there is no long white wire as on the old motor. In addition to the brown/brown-white-stripe capacitor wires, there are two additional pairs of wires that are quite short, and connected to each other, white to purple, brown to orange. What are these for? The white is too short to reach the control module so it is probably not the COM wire. Are these to control rotation? Startup?
Thanks for your time and expertise!
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Replies:
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| andydug
| "Re(1):Too many wires" , posted Thu 28 Feb 16:48
the to wires connected together are for rotation. Just replaced mine 60 dollars at granger for a 1/4 hp 220v dayton
I can fix anything If I know what to look for!!!
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| andydug
| "Re(1):Too many wires" , posted Thu 28 Feb 16:48
the to wires connected together are for rotation. Just replaced mine 60 dollars at granger for a 1/4 hp 220v dayton
I can fix anything If I know what to look for!!!
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| furnacemaninc
| "Re(1):Too many wires" , posted Sun 24 Feb 15:42
double check that you have a 115 volt motor, yellow is usually
common on 240 volt motors
good luck!
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| bigglenn357
| "Re(1):Too many wires" , posted Thu 21 Feb 18:13
On motor label it should have a diagram for these wires.The small inter-connected wires are for your fan rotation,ccw/cw
Big Glenn
"Imagination is more important than knowledge" (Albert Einstien)
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| | Technician
| "Re(2):Too many wires" , posted Thu 21 Feb 20:22
The yellow is the neutral which was the white on the old motor. Black is High speed, bleu is medium, and red is low. You should take a temperature rise to make sure you are on the right speed.
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| | baggins
| "Re(3):Too many wires" , posted Fri 29 Feb 01:02
Too many wires, too few neurons- when I ran the test the impeller came on , the burners fired up, the fan relay clicked- but no squirrel in the cage. Must be the fan motor! $66 at Grainger, pull the old motor, put in new, ran the test the impeller came on , the burners fired up, the fan relay clicked- but no squirrel in the cage. So I had the old motor sitting there and I put 120 VAC across white and black - whirrrrr. I put a meter on the fan relay 120 output and ran the test to find no juice . I took the circuit board out and found the place on the board that was discolored from the relay overheating as it failed. Jameson has the relay for $2.65 but I am no good at circuit board soldering so I bought a new (updated) control board for less than the cost of 100 relays (not much less) and put the new motor on the shelf as I am sure one of the furnaces will need it one day. Thanks for the very helpful advice.
Thanks for your time and expertise!
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