Carrier HH84AA020 Control Board (HH84AA020)
An OEM replacement furnace control board used in Carrier HVAC equipment to restore normal system control functions where the HH84AA020 part number is specified.
Key Features:
- Official OEM control board for Carrier HVAC equipment (listed as "Control Board HH84AA020").
- Listed as a furnace circuit board.
- Listed as replacing HH84AA011.
Compatibility & Applications:
- Used in Carrier HVAC equipment (model-specific)
- Used in older Carrier systems, including older furnaces and residential Carrier HVAC units.
- Must only be used where the manufacturer specifies this exact part number: HH84AA020.
Installation & Operation Notes:
- Installation should be performed by a qualified HVAC service technician.
- Pay close attention to fan-speed wiring, as terminal positions may differ from the original board.
- Replacing the board can also resolve an operational issue described as an "additional cool down start at end of the heat cycle."