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Universal Compatibility: Engineered as a drop-in replacement for obsolete part numbers 2578400 and 2568516
eliminating the need for external electricity by utilizing a millivolt signal
it maintains high performance up to a maximum temperature of 250°F
While the dimensions are similar
A healthy switch will show near-zero ohms
Carrier HH18HA597 Limit Switch Freon Universal Compatibility: Engineered as aThe Carrier HH18HA597 Limit Switch is a critical safety component designed for high temperature monitoring within HVAC furnace configurations. Rated for a 160 degree trip point, this SPST (Single Pole Single Throw) thermal switch acts as a primary safety cutout, ensuring the burner circuit opens if the heat exchanger exceeds safe operating parameters. This specific furnace limit control is engineered for a precise 160F fixed temperature setting with a
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