Author Topic: whirpool furnace fs643-125cr  (Read 4028 times)

Offline ddh

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whirpool furnace fs643-125cr
« on: July 03, 2008, 07:09:17 PM »
the wiring diagram is missing what wires do i switch to put blower on high

Offline Repair-man

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Re: whirpool furnace
« Reply #1 on: July 04, 2008, 05:23:21 AM »


DDH, could you please be more specific as to the choices of wires you have, and whether this is a gas or electric furnace. Also mention which of the motor wires are currently being used and their colors.

Generically speaking, the speed wires on most blowers are as follows:

black=high
blue=med
red=low

You can only raise the speed if the black wire is currently not connected. If it is, you're already on high speed for cooling.
« Last Edit: July 04, 2008, 08:57:01 AM by Repair-man »
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Offline ddh

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Re: whirpool furnace
« Reply #2 on: July 04, 2008, 09:44:24 AM »
thank you it is a gas furnace and i put a 3 ton a/c on it and coil freezes up blower sounds very slow will check wire colors today   not all the time tho thank you very much ddh

 

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