Carrier HH18HA147 Limit Switch 321894-709 This is a complete pilot

This is a complete pilot assembly

model TCLE 5 HC

the 311077 is rated for use in both hydronic and steam systems

delivering 1/4 horsepower for efficient condenser cooling

Carrier HH18HA147 Limit Switch 321894-709 This is a complete pilotThe Carrier HH18HA147 Limit Switch is a critical safety component designed for precise thermal monitoring within furnace heat exchangers and air handlers. Engineered as a high limit protection device, this switch is a direct replacement for HH18HA147A and functions by opening the electrical circuit if internal plenum temperatures exceed safe operating parameters. This prevents thermal stress on the heat exchanger and ensures the system operates within