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A weak or failed start capacitor is one of the most common reasons an RV rooftop A/C compressor hums, trips a breaker, or refuses to start under load. This Coleman-Mach capacitor is a direct replacement sized for the compressor housing, so you're not stuck troubleshooting the whole unit.
If your rooftop A/C is struggling to start or shutting off unexpectedly, this capacitor is worth checking before assuming the compressor itself is bad.
