this is an open fuse link

the unit features molded terminal numbers and a circuit diagram on the top housing

ensuring the hub does not back out during high-torque operation

Low) to manage airflow velocity across the coil

failing to protect the compressor from refrigerant migration and potentially leading to mechanical failure

Carrier HH18HA160 Temp Switch 324846-701 this is an open fuseThe Carrier HH18HA160 Temp Switch is a critical OEM limit switch designed for heavy duty thermal protection in commercial and residential HVAC systems. Engineered as a safety limit control, this genuine Carrier replacement part monitors the heat exchanger environment, automatically interrupting the burner circuit if temperatures exceed safe operating parameters. With a precise 160F cut out and a automatic 120F cut in reset, it prevents thermal stress