Copeland 914-0036-03 Start Capacitor

The Copeland 914-0036-03 Start Capacitor is a mission-critical component engineered to provide the high starting torque required for heavy-duty HVAC and refrigeration applications. Rated at 88-106 Microfarad (MFD/uF) and 330Vac, this round start capacitor is specifically designed for 50/60 Hz single-phase motor circuits. It is a direct OEM replacement for various Emerson and Copeland compressors, including ZB15KA-PFV scroll models and CR16K6(E)-PFJ semi-hermetic series. Housed in a rugged, moisture-resistant phenolic resin case, this unit is built to withstand the thermal stress of frequent cycling and high-ambient environments. By delivering a quick electrical boost to the start windings, it allows the compressor to overcome high head pressures—typical in systems with non-bleed expansion valves (TXV)—preventing excessive current draw and protecting the motor from premature winding failure. This capacitor is often paired with a potential relay to ensure the circuit is cut once the motor reaches operational speed, maintaining system efficiency and reliability.

Key Benefits

• High Starting Torque: Engineered for 88-106 MFD to provide the necessary boost for hard-starting compressors in refrigeration and air conditioning.
• Broad Compatibility: Matches specifications for major Copeland compressor parts, including both scroll and semi-hermetic models.
• Industrial-Grade Construction: Features a durable, non-conductive round start capacitor housing to ensure safety and long-term performance under heavy electrical loads.
• Voltage Stability: Rated for 330Vac to handle voltage fluctuations common in commercial and residential electrical grids.
• Optimized Startup: Reduces the duration of locked-rotor amperage (LRA) during the first quarter-second of operation, protecting internal compressor components.

Common Questions

What was the original application for the Copeland 914-0036-03?
This capacitor is frequently utilized in HVAC motor capacitors configurations for small-to-medium tonnage condensing units, specifically those using ZB scroll compressors or semi-hermetic refrigeration systems where high pressure differentials are present at startup.

Can I use a capacitor with a higher MFD rating?
Technicians should always adhere to the 88-106 microfarad specification. Using a rating too high can damage the start windings due to excessive current, while a rating too low may fail to provide enough torque to start the compressor, leading to a "humming" stalled motor.

How do I know if my start capacitor has failed?
Inspect the top and bottom of the casing for bulging, cracks, or leaking fluid (venting). Electronically, a 914-0036-03 capacitor should be tested with a multimeter on the MFD setting; if the reading falls outside the 88-106 uF tolerance, replacement is necessary.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.