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This is the factory OEM replacement fan blower control board for the Carrier FB4BNL036L00AAAA fan coil air handler. The control board serves as the central command module for the blower assembly — managing motor speed sequencing, thermostat signal interpretation, and safety circuit monitoring. When this board fails, common symptoms include the blower motor refusing to start, running continuously regardless of thermostat demand, intermittent or erratic airflow speeds, or the entire air handler going into lockout with no response to thermostat calls. Replacing the control board with the correct OEM part ensures all factory logic, timing sequences, and safety interlocks are restored to original specification.
Compatibility: Designed specifically for the Carrier FB4BNL036L00AAAA fan coil air handler. Always verify the OEM part number HK61EA006 against your existing board's label before ordering. If you have any fitment questions, our HVAC parts specialists are available to confirm compatibility before you purchase. Order today and receive same-day shipping on all in-stock control boards.