Johnson Controls A421ABC-04 Temperature Control Els PW 17895 Industrial Durability: Thermal-resistant construction prevents

Industrial Durability: Thermal-resistant construction prevents premature coil burnout during continuous duty cycles

Ensure the mounting surface is clean of debris before insertion

Common Questions What does the 4-flash code mean on my York furnace

and NCGM series air handlers

Johnson Controls A421ABC-04 Temperature Control Els PW 17895 Industrial Durability: Thermal-resistant construction preventsThe Johnson Controls A421ABC 04 is a line voltage, single stage electronic temperature control designed to provide precise switching for HVACR systems. Operating on 120 240 VAC, this controller features a versatile SPDT output relay that manages heating or cooling applications across a wide temperature control range of 40 to 212? F. As the upgraded successor, the A421ABC 04 is a direct replacement for the A419ABC 3, though technicians should verify