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Standardized Length: The 12-inch lead length provides sufficient slack for clean routing within standard control panels while preventing excessive line resistance
A fouled or oxidized sensor is a common cause of short-cycling or water heater ignition failure
As a pilot-capacity device
it is the direct replacement for many older Janitrol and newer Amana/Goodman furnace models utilizing a 3-inch insertion depth
this specific model is indexed for CW rotation
Carrier HH19ZA195 Limit Switch Standardized Length: The 12-inch leadThe Carrier HH19ZA195 Limit Switch is a critical safety component designed for precise thermal monitoring within Carrier residential furnaces and HVAC air handlers. This SPST (Single Pole Single Throw) manual reset furnace limit switch operates as a normally closed contact that opens when temperatures reach the 195 degree trip point and allows for manual closure once the system cools to 155 degrees. Engineered for high limit protection, the HH19ZA195
