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Replacing home a/c blower motor the unit has black and white wires my new motoe has blue lack red and yellow wres How do i wi it?

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DO YOU HAVE A WIRING DIAGRAM OF THE NEW MOTOR? TYPICALLY NEW MOTOR WILL HAVE OPTION FOR MULTIPLE SPEED MOTORS.
WIRES ON UNIT NEW MOTOR
WHITE.............................NEUTRAL.........WHITE
BLACK ...........................HOT...................RED=LOW
OPTION 2 YELLOW=MED/LOW
OPTION 3 BLUE=MED/HI
OPTION 4 BLACK=HI

Posted on Dec 11, 2014

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Posted on Jan 02, 2017

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SOURCE: I am replacing the a/c

Motor Wiring
Old Motor
Brown wire is Start
Yellow wire is run or Power
Black wire is High Speed or Common
The other two taps are speed taps, but you have a single speed application
And high speed is what you need ,that’s why there’s not any wires
on Red and Blue if high speed was to much then you would move the
Black wire to one of the other taps RED low speed or Blue Medinm speed
New Motor
White goes to the Yellow wire from the capacitor
Black goes to the Black wire you took off of high speed on old motor
Of course both Brown wires go to the capacitor and Green to ground
If a capacitor doesn’t discharge it doesn’t mean it’s bad
but the capacitors don’t last as long as they used.
Any time you put in a new motor always replace the capacitor
It will save you a lot of time and grief later on.

Posted on Apr 28, 2009

SOURCE: Wiring transformer on ac

pls on the transformer is writing each wire color to the corresponding voltage you have 2wires low voltage 24 volts(secondary) and other 2 wires power ( primary) also if you follow the uni wiring you will find 3 vwires main power voltage may be 110 or 220 or 380 and two others low voltage commonly 24 volts after identification you can connect each wire to the other .

Posted on May 04, 2009

  • 4 Answers

SOURCE: replacing old thermostat with new digital

Wire nut or tape the black off. The red is normally 24volt supply power to the t-stat. Blue may or may not be the common. Have a voltmeter?

Posted on Jun 24, 2009

jumptrout51
  • 3361 Answers

SOURCE: "i'm replacing my Rheem RBGC

There should be a wiring diagram on the side of the new motor.
The brown and the brown w/ white go to the new capacitor you should have bought with the motor.
The black and white go to your L1 & L2 power source. The remaining wires must be capped off.

Posted on Feb 25, 2010

Testimonial: "Thanks for the info. although a day late it confirmed what a friend had told me also. Didn't see any wiring diagram on the new motor."

kingbrizzle
  • 407 Answers

SOURCE: Need wiring diagram for installation of an A.O.

These wire colors are the different speeds for the motor. You will have 1 wire going to the heat, 1 wire going to the cool, and 2 wires on the park terminals on the board if available. It will actually tell you the speeds of the colors provided on the motor itself i.e. BLACK=High and so on. Without knowing what model of unit you are working on, it's hard to say where exactly the wires will hook up, but the majority of the time you will have a electrical board inside the furnace and the terminals that I described will be marked. Hope this helps and good luck!

Posted on Aug 05, 2010

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1 Answer

Iam replacng my home a/c blower motor. My unit hasa red a black and a white wire. My new motor has a black wire a blue wire a red wire and a yellow wire. I need to know which color wire goes to which


On the original motor, red was low speed, black was high speed and white was common. The new motor should either have a diagram on the side of it or within the box for verification, but the black SHOULD also be high speed and the red wire SHOULD be low speed , the blue wire SHOULD be medium and the yellow SHOULD be common. However, you MUST verify those connections on the wiring diagram provided with the new motor before you connect or you will probably let out the MAJIC SMOKE !!! The speed you decide not to utilize can just be taped off and zip tied to the bundle.

You made no comment about two brown wires, and if either motor has two browns, they go to the run capacitor.

Dec 23, 2014 | GE Heating & Cooling

1 Answer

I am eplacing my home a/c blower motor myunit has a white wire my new motor dosent How do i wire it??


Assuming the motor has the same rating as the one your are replacing, almost all motors have a small schematic on the side.
I am not certain you have a good replacement blower motor due to the color of the wires. If the information on the nameplate data matches, then you are probably safe in going ahead and using it.

(Warning: remove all high voltage to unit before working on unit)

Two of the leads will have to be placed on the same connections as your old motor so trace them back to the control board and install the wire on the same locations. Most blower motor now days have capacitors on them. Make sure you have the replacement capacitor that your blower motor requires. It will say on the schematic on the side of your new motor what the size is. Typically somewhere around 3 to 20 MFD. MFD is short for microfarad. Capacitors are rated in microfarads and in order for the new motor to operate efficiently you must get the manufactures recommended capacitor. After you replace the motor and capacitor, on startup you need to measure the amp draw on the new motor to make sure you will not burn up the new motor. The amp draw maximum will be on the motors nameplate data and when operating, the amperage cannot exceed the nameplate data. If it does it will burn up the windings and stop.
If during any of this sound like something your not confortable performing, please call a competent technician to replace your blower motor. If you burn up the motor, the retailer that sold it to you will not replace it if your not a trained professional.
Hope this helps

Dec 09, 2014 | Heating & Cooling

1 Answer

Need to change a broken blower motor in RUUD central air unit. Old central air blower motor (GE electric) was connected with brown and orange wire to 15 MHD capacitor. Another orange wire from central air...


on the motor should be a diagram detailing the wires. brown white goes to either side of the capacitor and brown wire to other side of capacitor. hi speed goes to normally open contact on the indoor fan relay and the wire designated common on the motor goes to the other side of power from the relay contacts.

Oct 03, 2012 | Heating & Cooling

1 Answer

I replace the blower motor with a MARS 10585 4 wire and my unit only has 3 wires. I think I have wired wrong because it runs for 15 minutes and cuts off but the outside unit still runs. The motor I...


Sounds like the old motor only had 1 speed. You will only need to connect one of the speed wires, probably the Hi-Black. Tape up or put wire nuts on the other 2 speeds. Connect the Hi to the red you have and the yellow to the white. The green should be a ground wire. Look at the label on the motor to verify what I have said. Let me know if it doesn't look like it matches this.

Aug 29, 2010 | GE Heating & Cooling

1 Answer

"i'm replacing my Rheem RBGC 08KA FAU blower motor. My dayton 3lu83j 4 speed motor has white, black, red, yellow,orange, brown, and brown with stripe wires. My old westinghouse motor has only one brown...


There should be a wiring diagram on the side of the new motor.
The brown and the brown w/ white go to the new capacitor you should have bought with the motor.
The black and white go to your L1 & L2 power source. The remaining wires must be capped off.

Feb 25, 2010 | Dayton Heating & Cooling

1 Answer

I am replacing the a/c blower motor and capacitor. The old motor has 1 brown wire to the capacitor, 1 yellow wire to the capacitor (the yellow then loops from the capacitor over to the wiring panel), 1...


Motor Wiring
Old Motor
Brown wire is Start
Yellow wire is run or Power
Black wire is High Speed or Common
The other two taps are speed taps, but you have a single speed application
And high speed is what you need ,that’s why there’s not any wires
on Red and Blue if high speed was to much then you would move the
Black wire to one of the other taps RED low speed or Blue Medinm speed
New Motor
White goes to the Yellow wire from the capacitor
Black goes to the Black wire you took off of high speed on old motor
Of course both Brown wires go to the capacitor and Green to ground
If a capacitor doesn’t discharge it doesn’t mean it’s bad
but the capacitors don’t last as long as they used.
Any time you put in a new motor always replace the capacitor
It will save you a lot of time and grief later on.

Apr 27, 2009 | Heating & Cooling

1 Answer

Replacing blower motor in furnace w/Fasco brand #D727


Some one missed the wiring diagram. I believe its like this:
L1 = Line 1 = (Hot all are same thing)
Black Hi
Blue Med
Red LO
Now usually the black is for AC and connects to a normally Open (NO) contact on the blower relay.
The heater speed (either red or blue) go the the normally Closed (NC) on the blower relay and on one side of this wire or contact on the relay it goes to the heating blower thermostat on the furnace.
The remaining wire (blue or red) you tape off.
L1 also feeds the Run Capacitor on 1 side and the Brown wire feeds the opposite side

The white wire is Neutral and goes to the neutral on the main line.

If this helps you please rate me accordingly and good luck.








Mar 13, 2009 | Kitchen Appliances - Others

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