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Have a coleman 5640 heating/cooling unit and the motor won't run unless just a tiny amount of pressure added?? Any suggestions?

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Yes, to change from heat to cool is done by reversing the power plug that is close to the housing. Matching the blue on the plug(as I recall) makes it cool. The red to blue makes it a heater. If it is currently heating, the unit works fine, it just needs the polarity reversed.
Good luck,
Glenn

Posted on Nov 09, 2008

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Hello,

we have also got a coleman 5640 but he only heats we don't have the manual of the cooler because we bought it second hand. Can you mail me how I can make it cool again.

thanks
charlotte

Posted on Jun 02, 2008

  • biscuit4769 Sep 09, 2012

    Reverse the power the power cord. red to red = heat blue to blue = cold

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Faulty fan capacitor if changing the capacitor doesn't work the fan is defective

Posted on May 05, 2008

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http://www.mycaravanparts.com.au/products/appliances/air-conditioning/coleman-mach3.aspx

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