RV Air Conditioner Maintenance

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  • #51839

    In this video, I clean and inspect my Keystone Cougar fifth wheel trailers Coleman Mach 3 air conditioner. Model AirXcel 48203A866

    See Part one video – https://youtu.be/sz79Kr_86PY

    Disclaimer: I’m not a certified RV technician merely an RV owner. This post and video should not be taken as instructional. If you decide to do the things depicted in the video, do the research and be aware of all risks involved. I accept no liability, you have been warned. – Ray

    First I TURNED OFF ALL POWER to the Air Conditioner by unhooking the AC power cable and disconnecting the 12-volt batteries.

    I show how I clean both the evaporator and condenser coils and straighten bent fins on both. I then reseal the inside chamber with new aluminum ducting tape and clean the sponge input filter.

    I also add some lubricant on the shaft of the fan motor and inspect the unit. I check for debris and clean the chassis. Finally, I test the system for optimal cooling temperature differential using an IR gun.

    Products used in video:

    Evaporator Coil Cleaner – https://amzn.to/2IbWRfA
    Condenser Coil Cleaner – https://amzn.to/2IjCKrX
    Bulls Eye Hose Nozzle – https://amzn.to/2wAJTCH
    Supco Fin Combs – https://amzn.to/2rBboXW
    Silver Foil Duct tape – https://amzn.to/2IfTr7z


    Very nice video Ray. Yet another project you will have me doing. Jobs are starting to back up on me but will have to just make time. Thanks again!

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