Question about Intertherm P3RA-048K Air Conditioner

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Blower speed i have a intertherm electric furnace with a 3 speed blower with central air also i was looking at the wiring it is only set on med low speed is ther any way to switch it to med hi it does not blow hard anough in the summer thanks

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  • Ken Bledsoe May 11, 2010

    Do you have a circuit board or do you have a fan center? You have to take off the cover of the air handler unit to see the board and it is located on the bottom right in front of the fan compartment.

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Yes usually the black is high speed, the blue is low and red medium speed. plug the black wire from the fan motor to where the blue wire is, then put the blue where the black wire was

Posted on Jan 10, 2009

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