Description
The Johnson Controls P66AAB-34 is a precision-engineered Electronic Fan Speed Control designed to optimize condenser fan operation in commercial refrigeration and HVAC systems. By continuously monitoring system pressure through a single input sensor, this control modulates fan motor speed to maintain consistent head pressure — improving system efficiency, reducing compressor wear, and extending equipment life.
Key Features
- Single input sensor design for straightforward installation and wiring
- 320–410 Psig operating pressure range for reliable head pressure control
- 60″ capillary tube for flexible sensor placement at the condenser
- Start voltage set at 40% of supply voltage for smooth, low-inrush motor starts
- Electronic control logic delivers accurate, stepless fan speed modulation
- Helps maintain optimal condensing pressure across varying ambient conditions
- Reduces energy consumption by running condenser fans only as fast as needed
Application
The P66AAB-34 is well-suited for use with single-phase condenser fan motors in commercial refrigeration equipment, rooftop units, and air-cooled condensing units where head pressure management is critical. The 60″ capillary provides ample reach for remote sensing at the condenser coil or liquid line.
Product Specifications
- Brand: Johnson Controls
- SKU / Model: P66AAB-34
- Control Type: Electronic Fan Speed Control
- Sensor Input: Single Input
- Operating Pressure Range: 320–410 Psig
- Capillary Length: 60″
- Start Voltage: 40% of Supply Voltage
Why Choose Jackson Systems?
Jackson Systems stocks a wide selection of Johnson Controls commercial HVAC and refrigeration controls, backed by expert support and fast shipping. Order the P66AAB-34 with confidence from a trusted HVAC distributor.









