blower
My old GE blower motor had an orange wire. Unfortunately, the new replacement motor has no orange wire.
The new motor will not start up with just the black, blue, yellow, red, and the 2 browns going to the capacitor.
However there are 4 factory-connected wires coming out and then returning inside the motor: they are yellow to purple, and orange to brown.
Any ideas on how to solve this?
Sounds like your blower may be done but I am not really sure. One thing to try is to call your Gas or Electric company and see if you have a service plan. Some utility companies include a service plan charge on your monthly bill (and you might not even know about it) and it includes 24 hour service.
The cooling test sequence for this board, says to jumper Y & G to R. Make sure the fan comes on, and spins up to the proper speed. Then remove the jumpers, and check the fan off delay.
If the blower does not come on, verify that the COOL terminal is energized. Use a voltmeter between COOL and neutral, and verify 120 volts (with jumpers in place).
If the COOL terminal is energized, check the motor and verify all speeds are working properly.
If the COOL terminal is not energized, the board my be bad.
According to the schematic you've provided, you have a multispeed blower (which is quite common). The speed at which the motor runs, is determined by which wire is energized. Energizing the red wire; for example, will run the motor at low speed. Energizing the black wire, runs the motor at high speed.
Before you disconnected the board, one of the motor wires was connected to the HEAT terminal on the board, and one was connected to the COOL terminal. Looking at the ladder diagram, it looks like the blue (MED) wire was connected to the HEAT terminal, and the black (HI) wire is connected to the COOL terminal.
If you've run the tests described above, and found that the COOL terminal is energized when the jumpers are in place. You can try connecting a different speed wire to the COOL terminal. If the motor spins up with the other wire connected, it means that the original speed is dead or something's wrong between the board and the motor.
It looks like the LO speed red wire is attached to the M1 terminal on the board. I'd swap that to the COOL terminal (just temporarily for the test), and see if the motor spins up when the jumpers are in place.
WARNING: DO NOT run the A/C for long with the motor at a lower speed..
Best Answer
The 4 wires coming out of and returning to to motor are for reversing the rotation of the motor. If you unplug them and switch them the rotation will switch. The yellow wire is most likely the common wire. The others are speed taps. Red is low, blue is medium and black is high (usually). The two browns go to the capacitor. I would need to see the wiring diagram to be sure but that is the usual wiring setup on furnaces. The orange wire was most likely medium high.