OEM Carrier Single Run Capacitor P291-1503 for Model FB4ANB060000ABAA

This is the factory-specified OEM single run capacitor (part number P291-1503) for the Carrier FB4ANB060000ABAA fan coil air handler. The run capacitor maintains a continuous phase-shifted current to keep the blower motor running at peak efficiency. When this component fails, you'll typically notice symptoms such as a humming motor that won't spin, intermittent blower operation, the unit short-cycling, or a complete loss of airflow — even when the thermostat is calling for cooling or heating.

• Specs: Single run capacitor | Factory-matched MFD rating | 370V or 440V rated (verify on unit data plate) | Round or oval case per OEM spec | ±3% tolerance for precise motor protection
• OEM vs Generic: This is a genuine OEM Carrier capacitor — not an aftermarket substitute. Generic capacitors commonly carry ±10% MFD tolerances, which can overstress motor windings, shorten blower motor life, and void equipment warranties. OEM ensures an exact factory match every time.
• Install Difficulty: 2/5 — Always discharge the capacitor fully before handling any terminals. Recommended tools: 1/4" nut driver, insulated needle-nose pliers, and a multimeter capable of MFD testing. Photograph all wiring connections before removal. If you are uncomfortable working around high-voltage components, consult a licensed HVAC technician.
• Warranty: Backed by a 1-year OEM factory warranty against defects in materials and workmanship. Orders placed before the daily cutoff ship the same business day from our climate-controlled warehouse.

Compatibility: Designed as a direct OEM replacement for the Carrier FB4ANB060000ABAA air handler. Always confirm the MFD rating and voltage stamped on your existing capacitor or the unit's data plate prior to ordering. Our HVAC parts specialists are available to verify fitment before you complete your purchase — get the right part the first time, guaranteed.