Aaon P59900 Pressure Switch Els PW 17895 This red indicator light serves

This red indicator light serves as a reliable visual status signal for technicians monitoring system operation or fault conditions

Check your heater's rating plate for the model number and verify the 5/16" hub diameter on your existing wheel

rated for operating temperatures between 40

This rating indicates the specific negative pressure threshold required to close the SPST switch contacts

As a veteran-grade direct replacement for 025-27731-702

Aaon P59900 Pressure Switch Els PW 17895 This red indicator light servesAs an experienced HVAC tech, you know that keeping a rooftop unit in the clear depends on reliable signal proving. The Aaon P59900 Pressure Switch is a critical differential air pressure switch designed specifically for AAON HVAC systems, functioning as a safety and operational interlock. With a factory set sensitivity of 0. 25 inches water column, this genuine AAON OEM part provides the precise pressure detection needed to verify inducer operation or