I have to replace to air circulating blower in my furnace. A furnace guy came out and took the unit apart so I didn't see where the wires connect to. The model number of the blower is K55HXHKL-8719. There are 5 wires:
Wht - Com
Blu 2-MD HI
Yel 3-MD LO
On the controller Board (White Rogers 50A50-474) there are 5 connections that I believe are for the fan blower, Cool, Heat, Park Park (grouped together as Cir Blower) and Cir (Grouped with Neutral)
My understanding of the motor is that of the 5 wires, White is neutral and the other 4 determine the speed of the motor.
Does anyone have any suggestions on how this motor would be connected to the controller board?
I appreciate any help
Look up the handyman club of america forum, joining is free. There are several regulars there that can definitely help you.
Now I don't want anyone getting upset now, I refer all the members there to here.
Hi, Ron. Hope this reply is in time to be of use to you. The motor model you are describing is a PSC type. Permanent Split Capacitor. The white motor lead is the 115 volt neutral. Think of the black, red, blue and yellow as 115 volt hot "speed taps". Black will generally be high speed used in cooling, so land the black at the Cool terminal on the board. Take the white neutral to the neutral terminal on the board. Heating speed is generally slower, so take yellow or red to the Heat terminal on the board. The Park terminals are dummy terminals. Dummy meaning they simply serve as terminals to land unused wires. So blue and yellow, or blue and red would go to Park. One last thing, a PSC motor needs a capacitor. Did you notice two brown wires from the motor? These would go to the twin capacitor terminals. Hope this helps!
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