OEM Carrier Fan Blower Control Board HK61EA006 for Model FX4CSX036000AAAA

This is the genuine OEM replacement fan blower control board (part number HK61EA006) for the Carrier FX4CSX036000AAAA air handler. The control board is the central logic hub of your air handler — it manages blower motor speed staging, communicates with the thermostat, coordinates heating and cooling calls, and monitors safety inputs. When this board fails, common symptoms include the blower refusing to start or run continuously, the system not responding to thermostat calls, inconsistent fan speeds, error fault codes on a communicating thermostat, or complete loss of air handler function.

• Specs: OEM Part Number HK61EA006 | Factory-matched to Carrier FX4CSX036000AAAA air handler | Controls multi-speed blower motor operations | Manages 24V thermostat signal inputs and 120/240V blower outputs | Includes integrated LED fault indicator for diagnostics
• OEM vs Generic: This is the genuine Carrier factory board — not an aftermarket substitute. OEM boards retain exact firmware logic, terminal layout, and safety timing sequences. Generic or refurbished boards frequently introduce blower speed errors, communication faults with Carrier Infinity or Performance thermostats, and voided equipment warranties.
• Install Difficulty: 3/5 — Disconnect power at the breaker and verify zero voltage before proceeding. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone or camera to photograph all wiring connections prior to removal. Label each wire harness before disconnecting. Board mounts to the blower deck with standard sheet-metal screws.
• Warranty: 1-year OEM manufacturer warranty against defects. Orders placed before 3PM EST ship same business day from our climate-controlled parts warehouse.

Compatibility: Engineered specifically for the Carrier FX4CSX036000AAAA fan coil air handler (3-ton, R-410A). Always verify your existing part number printed on the board label before ordering to confirm fitment. Not sure if this is the right board? Our HVAC parts specialists verify compatibility before every order — reach out and we'll confirm your fit before you buy.