Johnson Controls A19AAC-4 Temperature Control 30067439-890 Contractors should verify electrical terminal

Contractors should verify electrical terminal layouts to ensure seamless integration with the existing wiring harness

applying a high-quality thermal compound to the probe tip before inserting it into the thermowell is highly recommended

What causes these gaskets to fail

With the system calling for cooling

Johnson Controls A19AAC-4 Temperature Control 30067439-890 Contractors should verify electrical terminalThe Johnson Controls A19AAC 4 is a heavy duty, mechanical temperature control engineered for precision in HVACR applications. Built with a Single Pole Double Throw (SPDT) switch, this line voltage controller acts as a versatile solution for both heating and cooling equipment setups. The unit features a setpoint range of 0 to 80? F, specifically designed for low to medium temperature monitoring where a 5 degree F fixed differential is required for