The Johnson Controls A19AAC-16 Utility Thermostat is a heavy-duty

Technical field data confirms this unit is specifically designed for ZF**K4E scroll compressors within the 2 to 6 HP range

Reduced Hysteresis: Flexible material properties minimize internal resistance

preventing unnecessary compressor wear during extreme cold cycles

ensuring absolute mechanical and electrical compatibility

Copeland 998-0540-00 Limit Switch R-134A The Johnson Controls A19AAC-16 UtilityThe Copeland 998 0540 00 220F Limit Switch is a critical thermal protection component designed for commercial refrigeration and HVAC compressor safety. This discharge line thermostat monitors internal temperatures to prevent compressor overheating, effectively acting as a high limit cutoff. Engineered with a 220F trip point, the switch triggers when the discharge gas temperature reaches the safety threshold, interrupting the control circuit to protect