Johnson Controls P266ACA-100 Control

The Johnson Controls P266ACA-100 is an industrial-grade single phase condenser fan speed control designed to optimize head pressure in refrigeration and HVAC systems. Engineering for 208/240 VAC applications, this pressure-actuated fan speed controller utilizes a high VAC triac to modulate motor voltage, ensuring stable operation even in extreme ambient conditions. By maintaining consistent refrigerant pressure, the P266ACA-100 prevents compressor short-cycling and extends the service life of PSC motors (Permanent Split-Capacitor). This model features a 8 amp max output and is housed in a rugged NEMA 3R enclosure, making it suitable for demanding outdoor environments. Unlike standard on/off cycling controls, this HVAC head pressure control provides a linear response to pressure changes when paired with a compatible P266 ratiometric transducer, optimizing energy efficiency across the entire cooling cycle.

Key Benefits

• Precise Pressure Regulation: Maintains optimal head pressure by modulating fan speed, preventing liquid slugging and low-pressure trips during cold weather.
• Engineered for PSC Motors: Specifically designed for Permanent Split-Capacitor motors used in single-phase condenser applications.
• Field-Adjustable Settings: Contractors can fine-tune start/end voltage and pressure setpoints to match specific system requirements.
• Durable Construction: The NEMA 3R rainproof enclosure protects internal electronics from moisture, UV exposure, and debris.
• Enhanced Efficiency: Replaces legacy P66 and P215 series controls with a more responsive, digital solid-state design.

Common Questions

What motors are compatible with the P266ACA-100?
This control is specifically for use with single-phase PSC motors that are approved by the motor manufacturer for speed control via voltage dissipation. Do not use with capacitor-start motors.

Does this unit include the pressure transducer?
The P266ACA-100 is the control module only. A P266SNR-series electronic pressure transducer and corresponding cable must be purchased separately to complete the installation.

Can I use this for 460V applications?
No, this specific model is rated for 208/240 VAC. For higher voltage requirements, refer to the P266B or P266C series models.

This item is not eligible for free shipping.

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.