OEM Carrier Single Run Capacitor 4 MFD & 15 MFD 370V for Model PY2PPB048115AB

These genuine OEM Carrier single run capacitors are the factory-specified replacements for the Carrier PY2PPB048115AB packaged unit. Run capacitors stay energized throughout the entire operating cycle, providing the sustained phase-shift current that keeps the condenser fan motor and compressor running efficiently. When a run capacitor weakens or fails, the affected motor draws excess current, overheats, and ultimately trips on thermal protection — or refuses to start altogether. Common symptoms include a loud hum with no motor rotation, warm air output, short-cycling, or visible bulging and leaking on the capacitor body.

• Specs — P291-0403: 4 MFD (microfarad) | 370 VAC | Oval case | 50/60 Hz | Replaces HC90AA004, HC91CA004, 97F5704 | UL Approved with Pressure Sensitive interrupter
• Specs — P291-1503: 15 MFD (microfarad) | 370 VAC | Oval case | 50/60 Hz | Single run configuration | Factory-matched ±5% tolerance
• OEM vs Generic: Genuine Carrier/Totaline capacitors are reliability-tested to 60,000 service hours and use high-grade metallized polypropylene film. Generic alternatives often carry wider MFD tolerance (±10%), which accelerates motor winding wear and shortens compressor life — especially critical in a packaged rooftop application like the PY2PPB048115AB.
• Install difficulty: 2/5 — Shut off power at the disconnect and allow 5 minutes for the capacitor to discharge fully before touching terminals. Tools needed: insulated screwdriver, 1/4" nut driver, needle-nose pliers, multimeter (capacitance mode). Always photograph all wiring connections before disconnecting the old unit. Match the MFD and VAC rating exactly — do not substitute a higher or lower MFD value.
• Warranty: 1-year OEM factory warranty on both P291-0403 and P291-1503. Ships same business day from our warehouse.

Compatibility: Designed for the Carrier PY2PPB048115AB packaged gas/electric unit (4-ton, 115,000 BTU heating). Both capacitors are sold individually — select the correct part number (P291-0403 or P291-1503) for your specific motor circuit. Verify MFD and voltage against your unit's data plate before ordering. Not sure which capacitor you need? Our HVAC parts team verifies fitment before you buy — contact us today for same-day assistance.