Carrier HH19ZA174 Limit Switch 319825-402 and equipment specifications to ensure

and equipment specifications to ensure proper compatibility and safe operation

This OEM replacement part is critical for maintaining SEER ratings in Goodman air handlers and cased coils

Installing a switch with an incorrect rating can lead to dangerous soot buildup or delayed ignition

Universal Compatibility: Reliable for use with all common refrigerants including R410A

it operates at a consistent 3000 RPM to maintain the static pressure required to close the pressure switch and allow the control board to proceed

Carrier HH19ZA174 Limit Switch 319825-402 and equipment specifications to ensureThe Carrier HH19ZA174 is a technical grade L170 40F limit switch designed for critical thermal regulation within HVAC furnaces and industrial automation systems. This SPDT contact configuration switch acts as a vital safety interlock, featuring an actuation range of 170F (Open) to 40F (Close) to prevent equipment overheating and ensure system integrity. Built with a rugged die cast aluminum housing and an IP65 enclosure rating, it is engineered to