OEM Carrier Single Run Capacitor Kit (4 MFD & 15 MFD 370V) for Model PY3PEA048115AA

This factory-matched OEM capacitor kit includes both single run capacitors specified for the Carrier PY3PEA048115AA fan coil unit: part number P291-0403 (4 MFD 370V) and P291-1503 (15 MFD 370V). Single run capacitors maintain a steady electrical charge to keep PSC blower motors running at peak efficiency. When either capacitor weakens or fails, you'll typically notice sluggish blower startup, reduced airflow, a humming motor that won't spin up to speed, or a tripped thermal overload that shuts the motor down entirely.

• Specs: P291-0403 — 4 MFD (microfarad) | 370 VAC | Oval case | 50/60 Hz; P291-1503 — 15 MFD (microfarad) | 370 VAC | Oval case | 50/60 Hz | Non-PCB dielectric fluid | UL-approved current interrupter
• OEM vs Generic: These are genuine Carrier/Totaline OEM capacitors built to exact factory MFD tolerance (±5%). Generic capacitors often run ±10% or worse, placing sustained stress on PSC motors and shortening blower life significantly.
• Install difficulty: 2/5 — Always discharge capacitors before handling any terminals — stored charge can cause serious injury. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter with capacitance setting. Photograph all wiring before disconnecting. Replace one capacitor at a time to avoid miswiring.
• Warranty: 1-year OEM factory warranty on both capacitors. Orders ship same business day from our warehouse when placed before 3 PM local time.

Compatibility: This kit is designed for the Carrier PY3PEA048115AA fan coil unit. Always verify MFD and voltage ratings on your existing capacitors or the unit data plate before ordering — do not substitute a higher or lower MFD value. Questions about fitment? Our HVAC parts specialists confirm compatibility before you order — just reach out via chat or phone.