or a persistent pressure switch error preventing the ignition sequence

The spring return cycle to the open position occurs in approximately 9 seconds

It may function with other controllers

or restricted airflow over the condenser coils

Cleveland Controls NS2-1013-00 Pressure Switch 322838-753 or a persistent pressure switchThe Cleveland Controls NS2 1013 00 Pressure Switch is a mission critical safety component engineered for precise HVAC air pressure sensing in residential and light commercial systems. This OEM pressure switch comes factory calibrated to a . 40" W. C. (water column) setpoint, acting as a high reliability proof of airflow sensor to ensure the inducer motor is moving sufficient combustion air before the ignition sequence initiates. Constructed with a