Hvac Correct Wiring For Furnace Blower Motor Home Improvement Stack Follow the wires from those splices, back to the control board, or check the schematic. that will tell you how to wire everything. according to the new motor white = l1 (neutral), black = high speed, blue = medium speed, red = low speed. check the diagram on the old motor, to figure out which wires are which. My furnace is approximately 20 years old and i need to replace the blower motor. however the replacement has six wires and the existing has 5. here's the existing motor's wiring diagram: and here's the replacement's: i understand the brown wires will connect to the capacitor, and the red, black, and blue wires controls speed.
Furnace Blower Motor Wiring Explained I would use a dpdt like the blower relay on the eb12b. notice how the blower only and heat (from sequencer) are separated by the relay even though they are the same phase. the yellow wire (input to sequencer) is used as input on the n o contact, and the blue wire (output from sequencer) is input to the n c contact. In order to do so, remove the panel holding the circuit board for the system. with the 2 screws removed, gently slide the circuit board out of the system. leave the wires attached for now. we will disconnect the old blower motor in a subsequent step. next, remove the hoses attached to the drain trap, both top and bottom. Tighten the belly band in place. with the bracket installed, put the new motor shaft through the fan and line up the mounting holes. this is often most easily done by placing the fan assembly down on its face, so that the motor shaft is inserted straight down. insert and tighten up the 3 bracket mounting bolts. Replacing a carrier blower, for example, will cost you anything from $400 to $1,600, whereas replacing a goodman blower will cost you $275 to $800. the labor cost. the average hvac company charges $130 to $410 for labor, and the replacement job will take two to three hours as long as nothing unexpected occurs.
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