Trane KIT7686 Hard Start Kit

The Trane KIT7686 Hard Start Kit is a field-installed electrical component engineered to provide essential compressor start-up torque for residential and light commercial HVAC systems. Designed specifically for Trane 208-230V air conditioning units and heat pumps, this OEM hard start kit utilizes a high-quality start capacitor with a 145-175 µF rating and a potential relay to facilitate rapid motor ignition. By reducing the duration of inrush current, this kit minimizes electrical stress on the compressor windings and mechanical strain on internal components, effectively mitigating startup hesitation and vibration. Field technicians often utilize this relay and capacitor kit to address flickering lights or breaker trips caused by high-amp draws in systems with non-bleed TXV metering devices or aging motors. This 2-to-5 HP rapid start kit ensures the compressor overcomes head pressure immediately, maintaining consistent system performance during high-ambient cycles and protecting the integrity of the refrigeration circuit.

• Optimized Startup Torque: Delivers the necessary electrical surge to overcome locked rotor amps (LRA) in 2 to 5 HP compressors.
• Electrical Stress Reduction: Limits the duration of high-amp draw, protecting the contactors and motor windings from premature degradation.
• System Stability: Prevents localized voltage drops and potential breaker trips during heavy load conditions.
• High Precision Relay: Disengages the start capacitor instantly once the motor reaches sufficient speed, preventing overheating.
• OEM Compatibility: Specifically designed to match the electrical specifications of Trane and American Standard condensers.

When should a hard start kit be installed on a Trane unit?

Technicians typically install the KIT7686 when the compressor struggles to start against high head pressure, particularly in systems utilizing a thermostatic expansion valve (TXV), or when the unit is located far from the main electrical panel.

Will this kit help if my lights dim when the AC turns on?

Yes, by reducing the start-up time and managing the amperage burst, this kit often eliminates the "dip" in voltage that causes household lights to flicker during the compressor's ignition phase.

Is the KIT7686 compatible with variable speed compressors?

No, this hard start kit is intended for single-phase, fixed-speed 208-230V compressors. Variable-speed (inverter-driven) systems use different electrical logic and do not require traditional hard start components.

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.