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an open switch is caused by a blocked vent pipe
functioning effectively as a high limit control
The outer jacket is constructed to withstand consistent exposure to flame
Can I test the board before installation
Carrier HK37AA102 Circuit Board 320735-701 an open switch is causedThe Carrier HK37AA102 Circuit Board is a critical OEM replacement part designed for precision control in residential heating and cooling systems. As a direct fit HVAC furnace control board, it manages essential electrical functions including the blower motor relay, inducer motor, and hot surface igniter timing. This original equipment manufacturer component is engineered specifically for Carrier, Bryant, and Payne equipment, ensuring direct
