Trane CNT4990 Pressure Control 320788-703 Symptoms include the system being

Symptoms include the system being stuck in one mode (heating or cooling only) or a minimal temperature difference (less than 3°F) between the suction lines

the red button must be depressed once the furnace cools down and the underlying airflow issue is corrected

The Amana-Goodman 10759311S Blower Motor is a genuine replacement motor for various Goodman

leak-free brazing into the liquid line

the relief device opens slightly to maintain adequate gas flow

Trane CNT4990 Pressure Control 320788-703 Symptoms include the system beingThe Trane CNT4990 is a high precision HVAC air pressure control switch engineered for critical monitoring in residential and light commercial systems. This OEM Trane replacement part features a fixed set point of 0. 26" WC, making it a vital safety component for sensing draft in inducer fan assemblies and ensuring proper airflow before ignition. With its SPST (Single Pole Single Throw) contact configuration, the CNT4990 provides reliable circuit