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This Therm-O-Disc MicroTemp thermal cut-off is engineered to interrupt the electrical circuit if internal temperatures exceed the critical 144°C (291°F) threshold
If the circuit stays open while the draft exceeds this set point
Optimized Airflow: The 770RPM speed rating preserves the system's external static pressure balance and heat exchange efficiency
It is a direct OEM replacement for gaskets used in Watts Series 3001
Carrier HK38EA022 Circuit Board 318820-201 This Therm-O-Disc MicroTemp thermal cut-offAs a core component for modern heat pump and air conditioning systems, the Carrier HK38EA022 Circuit Board serves as the primary defrost control for high efficiency outdoor units. This OEM control module is critical for maintaining HVAC system performance by managing complex logic for defrost cycles, pressure switch monitoring, and short cycle protection. Designed for Carrier, Bryant, and Payne residential and commercial units, this board is a direct
