Johnson Controls A421AET-01 Temperature Control R-22 resulting in yellow tipping or

resulting in yellow tipping or delayed ignition

000 operations

and Payne valve bodies

use a WEL14A-602R bulb well or a compatible packing nut to protect the sensing element

Johnson Controls A421AET-01 Temperature Control R-22 resulting in yellow tipping orThe Johnson Controls A421AET 01 is a line voltage electronic temperature control designed for versatile HVACR applications, providing a reliable alternative to traditional electromechanical thermostats. Operating on 120 240 VAC, this SPDT controller features a broad setpoint range of 40 to 212F, making it ideal for both refrigeration and heating logic. Built with a NEMA 1 enclosure for surface mounting, the unit includes a high visibility front panel