making a full assembly replacement more reliable than pin-by-pin repairs

Inspect the vacuum tubing for cracks or moisture buildup and ensure the condensate drain is not backed up

and a standard 1/8" NPT vent

Technicians should test for continuity across the terminals while the system is cool

The calls from the thermostats remain active

Nordyne 921952 Indoor Coil 322057-301 making a full assembly replacementThe Nordyne 921952 Indoor Coil is a professional grade 4 ton evaporator coil designed for high performance residential and light commercial cooling applications. This uncased A coil features a robust O2HS tube and fin architecture, utilizing all aluminum construction for both fins and piping to provide superior thermal conductivity and resistance to common environmental formicary corrosion. Engineered as a Replacement Coil HS02 for high SEER systems,