Johnson Controls A-4000-121 Oil Indicator Els PW 17895 This HVAC replacement blade is

This HVAC replacement blade is compatible with numerous 13 and 14 SEER residential AC units and heat pumps

While a common wire (C terminal) is recommended for hardwired power

Heavy-Duty Construction: Built with robust materials designed to endure high-temperature environments without oxidation

it eliminates the need for manual intervention by cycling the fan based on head pressure

What tools are required for the installation of the SP20076

Johnson Controls A-4000-121 Oil Indicator Els PW 17895 This HVAC replacement blade isThe Johnson Controls A 4000 121 is a critical pneumatic oil indicator replacement cartridge designed for high performance compressed air treatment in pneumatic control systems. As a veteran technician knows, maintaining oil free air is non negotiable for protecting sensitive downstream components like pressure reducing valves and actuators from fouling. This replacement cartridge is specifically engineered for use with the A 4000 120 oil indicator and