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15" WC before determining the switch is faulty
the internal timing mechanism is replaceable if the relay assembly fails
making it an ideal choice for managing hot water
Plenum Compliance: Meets UL 1820 and NFPA 90A requirements for safe routing through drop ceilings and air plenums
this replacement flame sensor is built to withstand the extreme thermal cycles of residential and light commercial heating environments
Carrier HH18HA192 Limit Switch 319825-402 15" WC before determining theThe Carrier HH18HA192 is a high limit, auto reset limit switch designed for critical thermal protection in heating applications. This genuine OEM Carrier replacement part is engineered to monitor heat exchanger temperatures and interrupt the electrical circuit if internal conditions exceed the safe operating threshold. With a strictly calibrated temperature range of 140 190F, it serves as a primary safety component to prevent equipment overheating and