it can cause the pressure switch to fail

As an OEM Trane motor

and Payne HVAC systems

Zero Differential Operation: The direct-acting design allows the valve to open and close reliably at 0 PSI

Heil Quaker ICP 1012596 Gasket R-134A it can cause the pressureFor specialized HVAC service, the ICP 1012596 Collector Box Gasket is the critical OEM sealing solution required to maintain secondary heat exchanger integrity. As a veteran grade Heil Quaker collector box gasket, this component is precision manufactured from high resilience elastomers to withstand the high temperature fluctuations and corrosive condensate found in 90%+ AFUE condensing furnaces. A failing 1012596 gasket often leads to inducer housing