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often caused by a failing transformer
consult the technical data sheet for specific elastomer limits
Features high-grade internal components for reliable compressor motor starting
Tripping is typically caused by inadequate vent draw
Integrated Safety: Built-in thermal fuse protection prevents transformer burnout and system-wide electrical damage
Carrier HH12ZB170 Limit Switch often caused by a failingThe Carrier HH12ZB170 Limit Switch is a critical safety component designed for precise thermal monitoring in high efficiency furnace and air handling units. This OEM replacement limit switch features a fixed temperature range, engineered to open at 170F and automatically reset when temperatures drop to 130F. As an L170 40F thermal switch, it provides essential protection against heat exchanger overheating by interrupting the burner circuit if airflow