Question about Heating & Cooling
If it is a psc motor it may be a five speed..(most are) there is a wiring diagram usually on the back of the blower door, and a diagram on the motor isself to tell which speed is the highest speed (colored wire) the units are usually factory wired for the highest speed connected to the circuit board for "cool" it may be possible that it has been changed. also, if the run capacitor is bad, the motor will not come up to full speed, it may need to be checked and changed, and lastly, the filters, squirrell cage and evaporator coil cleanliness need to be verified.
Posted on Jul 19, 2009
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Posted on Jan 02, 2017
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