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and PA75 models manufactured both before and after 1986
This specific model features NBR seals rated for general service
When the limit switch fails or detects an overheat
Engineered for seamless integration with Utica and Dunkirk boilers
water in the vacuum tubing
Johnson Controls R120AAA-701 Repair Relay Pack R-22 and PA75 models manufactured bothThe Johnson Controls R120AAA 701 Repair Relay Pack is a critical field service component engineered specifically for addressing relay failure within S500 Series Electronic Fan Speed Controllers. This replacement kit allows technicians to restore functionality to AC fan speed control systems without requiring a full controller swap, maintaining precise condenser pressure regulation and head pressure control in HVACR applications. Designed for seamless