Always verify the Minimum Circuit Ampacity (MCA) on the air handler nameplate after installation

Common culprits include moisture buildup in the sensing lines (often seen in high-efficiency 90%+ condensing furnaces)

Versatile Media: Approved for use with natural gas

an undersized expansion tank

Tecumseh AE1022E-212-J7 Compressor 320788-702 Always verify the Minimum CircuitThe Tecumseh AE1022E 212 J7 is a heavy duty reciprocating compressor engineered for high and commercial back pressure (HBP CBP) systems. This 1 3 HP unit operates on a 115V, 1 phase connection and is a direct replacement for legacy model AE4440Y AA1A, as well as several Copeland and Danfoss cross references. Utilizing a High Start Torque (HST) motor, it ensures reliable startup even under the high differential pressures common in commercial