Johnson Controls P266AAA-100 Control

The Johnson Controls P266AAA-100 is an industrial-grade single phase condenser fan speed control designed to maintain stable head pressures in 208/240 Vac refrigeration and air conditioning systems. This pressure-actuated digital controller replaces legacy P66 and P215 series units, offering a more robust NEMA 3R weather-resistant solution for permanent split-capacitor (PSC) motors. With a 8 amp maximum output and featuring 3 high VAC triacs, this controller allows for precise modulation of fan speed, effectively extending motor life and improving system energy efficiency during low-ambient conditions. Its electronic sensing eliminates the risk of capillary tube failure, a common pain point for technicians in the field. This model is ideal for commercial refrigeration and computer room air conditioning where consistent performance is mission-critical.

• Enhanced Configuration: Features high VAC triacs that support auxiliary fan staging to manage multi-fan condenser setups.
• Field Reliability: Housed in a durable NEMA 3R enclosure with an integral heat sink to handle demanding outdoor environments.
• Retrofit Ready: Direct upgrade path for older P66 and P215 controllers, simplifying truck stock and installation times.
• Precision Control: Compatible with P266SNR pressure transducers to provide accurate, ratiometric 5 VDC feedback for tight pressure regulation.

• What motor types are compatible with the P266AAA-100? This controller is specifically engineered for single-phase PSC motors. Always verify total motor amperage does not exceed 8 amps.
• Can I use this for multi-motor applications? Yes, you can modulate multiple identical motors provided their combined current draw remains within the 8A rating and the split-winding mode is configured correctly if needed.
• How do I set the start and end pressures? Settings can be adjusted via onboard dip switches or using the P266 configuration tool for precise digital calibration.

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.