Carrier HK61EA006 Circuit Board w/ Time Delay Relay
An OEM replacement printed circuit board used in compatible Carrier fan coil/air handler applications to provide blower control functions, including time-delay operation, as defined by the manufacturer.
Key Features:
- Official OEM Circuit Board w/ Time Delay Relay for Carrier HVAC equipment
- Carrier service documentation for the CES013003-00/01 control boards (HK61EA002, HK61EA006) describes board features including low-voltage thermostat connections, a 5-amp low-voltage fuse, a fan relay, and time-delay functionality
Compatibility & Applications:
- Covered in Carrier service documentation as the Fan Coil Printed Circuit Board (HK61EA006) within the CES013003-00/01 control board family (also references HK61EA002)
- Used in Carrier fan coil/air handler product servicing as documented in the SM-FANCOIL-07 service manual (fan coil/air handler platforms are referenced in the manual, including FB4C, FX4D, PF4, FF1E, and FZ in related control-box context)
- Must only be used where the manufacturer specifies this exact part number: HK61EA006 for the specific unit/model being serviced
Installation & Operation Notes:
- Installation should be performed by a qualified HVAC service professional
- Follow the unit's service/installation manual and wiring schematics for the specific equipment; the Carrier service manual directs technicians to use the wiring schematics as a guide when servicing/troubleshooting the PCB
- Safety note shown in the Carrier documentation: disconnect remote power supply before opening the panel
- Q&A guidance emphasizes verifying the correct board using the unit's product ID/model/serial information; the board does not include a wiring harness, and the harness is sold separately (Carrier 327905-701)
Maintenance & Troubleshooting:
- Carrier troubleshooting guidance (board-level) includes scenarios such as: fan will not turn on from thermostat, electric heat staging issues, transformer fuse repeatedly blowing, and fan running continuously
- Carrier notes that overheated/blown traces on the PCB typically indicate a high-voltage short or high voltage applied to the low-voltage circuit, and stresses confirming correct wiring before applying power
- Carrier troubleshooting steps also call out checking transformer primary/secondary voltage, verifying correct R/C wiring, and replacing an identical 5-amp fuse if blown (and investigating shorts/excess VA draw/miswiring if it continues to blow)
User Reviews & Q&A Summary:
- Reviews commonly describe it as an exact-fit OEM replacement that restores normal blower/air-handler operation when the original board or relay components are damaged (often reported after burned/melted board components or loss of airflow)
- A recurring theme is straightforward replacement for experienced installers (multiple reviewers mention easy install and significant cost savings versus service calls)
- Q&A themes focus on confirming compatibility by product ID/model/serial (especially when board label digits differ), and confirming it does not include the wiring harness; wiring diagrams/installation guidance are generally directed back to Carrier documentation or Carrier support