Fan cycles on and off

Discussion in 'Freightliner Forum' started by chp56, May 10, 2013.

  1. chp56

    chp56 Light Load Member

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    Sep 25, 2011
    Barstow, Ca
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    All of a sudden the fan on my 2011 cascadia has started switching on and off repeatedly--has nothing to do with temp, it does it even when cold--runs 10-15 seconds, shuts off, then immediately cuts back in again. Any body else had that problem? This continues all day
     
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  3. Pablo-UA

    Pablo-UA Road Train Member

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    Oct 11, 2010
    Borispol, Ukraine
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    Cab unit "asks" engine ECM to turnt it on to cool down A/C condencer
     
  4. chp56

    chp56 Light Load Member

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    33
    Sep 25, 2011
    Barstow, Ca
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    A.C. Is off--what do you mean by "cab unit"? Might that be faulty?
     
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