Carrier HH19ZA156 Limit Switch Freon while the 5-wire terminal design

while the 5-wire terminal design (R

Zero Minimum Pressure: Operates reliably from 0 to 5 PSI

By utilizing factory-authorized components

Common Questions How do I adjust the set point on the AFS-A-173

Carrier HH19ZA156 Limit Switch Freon while the 5-wire terminal designThe Carrier HH19ZA156 Limit Switch is a critical OEM safety component designed for precise thermal regulation within Carrier, Bryant, and Payne furnace assemblies. This normally closed disc style switch acts as a primary high limit safeguard, engineered to interrupt the electrical circuit and terminate the heating cycle when internal plenum temperatures reach the 155F open setpoint. Once the heat exchanger cools to the 105F close setpoint, the