OEM Carrier Single Run Capacitor for Model PY3PPA030040AA Packaged Unit

This OEM single run capacitor is the factory-specified replacement for the Carrier PY3PPA030040AA WeatherMaker packaged unit. Single run capacitors maintain the continuous phase shift needed to keep either the condenser fan motor or blower motor running efficiently after startup. When a run capacitor fails, you'll notice symptoms such as a humming motor that won't spin, intermittent shutdowns due to thermal overload, or the unit struggling to reach setpoint before tripping on high pressure. Replacing with the correct OEM-spec capacitor restores proper motor torque and extends compressor life.

• OEM Part Numbers: P291-0403 and P291-1503 — two factory-designated single run capacitors for this model (condenser fan motor and blower motor circuits respectively). Verify your failed capacitor's MFD and voltage rating on the data plate before ordering.
• OEM vs Generic: OEM Carrier capacitors are manufactured to ±3% MFD tolerance, matching the exact factory specification. Generic replacements often carry ±10% tolerance, which accelerates motor winding wear, increases amp draw, and shortens overall equipment life.
• Install Difficulty: 2/5 — Always disconnect and lock out power before servicing. Discharge the capacitor fully using an insulated resistor or discharge tool before handling terminals. Tools needed: 1/4" nut driver, needle-nose pliers, multimeter (capacitance mode). Photograph all wiring connections before removal.
• Warranty & Shipping: Backed by a 1-year OEM factory warranty. Orders placed before the daily cutoff ship same business day from our stocked warehouse.

Compatibility: Designed for the Carrier PY3PPA030040AA packaged combination heating and cooling unit (2.5-ton cooling / 40,000 BTU heating). This listing covers both OEM part numbers P291-0403 and P291-1503 — both are single run capacitors for this platform. Always cross-reference the MFD rating and voltage printed on your existing capacitor's label to confirm the correct unit. Our HVAC parts specialists are available to verify fitment before you order — no guesswork required.