OEM Carrier Fan Blower Control Board HK61EA006 for Model PF4MNA042L00AAAA

This is the genuine OEM factory-authorized replacement fan blower control board for the Carrier PF4MNA042L00AAAA air handler. The board orchestrates all blower motor operations — managing multi-speed fan sequencing, thermostat signal inputs, and the integrated time-delay relay that keeps the blower running approximately 90 seconds after the thermostat call ends, purging residual conditioned air and protecting the heat exchanger. Common failure symptoms include the blower refusing to start, the fan running continuously regardless of thermostat demand, random short-cycling, or a complete loss of airflow with the compressor still operating. Replacing this board with the correct OEM part restores factory-precise control logic that aftermarket boards frequently cannot replicate.

• Part Number & Cross-References: OEM part HK61EA006 | Cross-references: CEPL130541-01, CEBD430541-03A, 1171734, 103972, 122621 | Carrier Factory Authorized Parts designation
• OEM vs. Generic: This is a genuine Carrier OEM board — not a third-party clone. OEM boards carry factory-matched firmware and relay timing. Generic replacements may use off-spec time-delay tolerances that cause nuisance faults, compressor overheating, or void your system warranty.
• Install Difficulty: 3/5 — Disconnect power at the breaker AND the disconnect box before opening the air handler. Photograph all wiring harness connections before removal. Tools needed: ¼" nut driver, #2 Phillips screwdriver, needle-nose pliers. Board swaps are straightforward but require careful re-termination of all low-voltage wiring connectors.
• Warranty: 1-year OEM manufacturer warranty. In-stock and ships same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Designed as the direct OEM replacement for the Carrier PF4MNA042L00AAAA air handler. Also compatible with a broad range of Carrier, Bryant, and Payne fan coil and air-handler units sharing the HK61EA006 specification — verify your unit's data plate and existing board part number before ordering. Our HVAC parts specialists are available to confirm fitment before you buy.