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the Williams P501617 is the official direct replacement for part number P323411
this is a self-powered millivolt thermostat
Common Questions Can this part replace a shorter lead wire ignitor
Is the Modine 5H0749730001 compatible with older Hot Surface Ignition (HSI) models
as well as heat pumps without auxiliary heat
Carrier HH19ZA201 Limit Switch Els PW 17895 the Williams P501617 is theThe Carrier HH19ZA201 Limit Switch is a critical safety component designed for HVAC furnace temperature regulation. This OEM Carrier replacement part functions as a normally closed SPST disc limit switch, engineered to interrupt the heating circuit when the plenum temperature exceeds safe operating parameters. With a calibrated opening temperature of 200F and an automatic reset temperature of 130F, it ensures high limit protection for Carrier, Bryant,
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