OEM Carrier Fan Blower Control Board HK61EA006 for Model PF4MNA042T00AAAA

This is the OEM factory-specified fan blower control board (part number HK61EA006) for the Carrier PF4MNA042T00AAAA air handler. The board serves as the central command module for blower operation — managing fan speed sequencing, time delay relay functions, and cooling/heating fan activation signals from the thermostat. When this board fails, common symptoms include the blower not starting in cooling mode, the fan running continuously even with the thermostat off, coil freeze-up due to improper airflow control, or the system short-cycling with no airflow response. Replacing this board with the correct OEM part restores factory-programmed timing and relay logic.

• Part Number: HK61EA006 | Also cross-references CEPL130541-01, 1171734, 103972, 122621 | Includes integrated time delay relay
• OEM vs Generic: This is a genuine Carrier OEM board with factory-programmed timing sequences and relay specifications. Aftermarket boards may use substitute relay components with different delay tolerances, risking blower motor wear or thermostat signal mismatch.
• Install Difficulty: 3/5 — Disconnect power at the breaker and verify zero voltage before handling. Tools needed: 1/4" and 5/16" nut driver, needle-nose pliers, phone camera (photograph all wiring before disconnecting). Reconnect low-voltage thermostat wires first, then line-voltage connections. Restore power and test all fan modes.
• Warranty: 1-year OEM manufacturer warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PF4MNA042T00AAAA air handler. This board is also used across select Bryant and Payne air handler platforms sharing the same control architecture. Always verify your existing board's part number label before ordering. Have a fitment question? Our HVAC parts specialists confirm compatibility before you buy — call or chat today.