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This OEM dual run capacitor (part number P291-7054R) is the factory-specified replacement for the Carrier PY4GNAB48115AN packaged gas-electric unit. The dual run capacitor simultaneously supports two motors — the compressor and the condenser fan motor — storing and releasing the precise electrical charge needed to start and sustain both components throughout every cooling cycle. When this capacitor begins to fail, common symptoms include a loud humming noise with no motor startup, the condenser fan spinning slowly or not at all, the system tripping on high-pressure lockout, or the unit short-cycling within minutes of startup. Left unaddressed, a weak or failed capacitor can cause compressor damage, significantly increasing repair costs.
Compatibility: Designed for the Carrier PY4GNAB48115AN 4-ton packaged gas-electric unit. Always verify the MFD and voltage rating on your existing capacitor and your unit's data plate before ordering to ensure a correct fit. Our HVAC parts specialists are available to confirm fitment — contact us before you order if you have any questions.