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Rv roof top ac blows cold but very hard out of the vents i cleaned the coils with no help.the air is cool that comes out,but with no force.what can i do?

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  • Mike Butler
    Mike Butler May 11, 2010

    Always been that way?

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Sounds as if your blower motor in high speed has the windings going out. You need to check to see what the amps the motor is pulling to see if the blower motor is going out. It is also possible theat you may just need a blower motor capacitor. To check the amps you need an amp meter and taking the black wire coming from the motor and place the amp clip around this wire and start the a/c this will give you the amp pull and compare this with the amps the motor is specified for. If the amp being pulled is higher than what the motor is designed for then the motor is going out and not giving you the proper rpms in order for the unit to operate effeciently. Also to check for the capacitor you'll need a capacitor meter and follow the instructions. I would check the capacitor first before the motor in the event the capacitor is bad it will not all the motor to achieve the proper rpms.. Also it is easier to change out than a motor. Good Luck

Dave

Posted on Jul 22, 2009

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