RV techs call them throwaways and replacement required. Before I did any of that, I would check my ducting for blockage. If the unit is running for a while, and no condensation is dripping down the outside of the trailer, likely the compressor has failed.
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Mike and Lorraine
2002 3655 FL, 2005 3650RK
2010 3665RE, 2015 3910FB
F350 crew cab dually 6.7
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