Nordyne 903915A Air Handler Control Board

The Nordyne 903915A Air Handler Control Board is a reliable replacement part for compatible variable-speed air handlers. This air handler control board manages fan speed and system sequencing, helping maintain consistent comfort and efficient operation in select Nordyne HVAC systems.

As a Nordyne replacement part, it is designed for use in variable-speed air handlers and specifically fits the B4VM and B4VM-B models. It supports multiple Nordyne part numbers and wiring configurations, making it a practical choice for repairs or upgrades while preserving performance and reliability.

This used-on control board is compatible with Nordyne B4VM-series and X-series components, offering a versatile option for repairing older systems. It is designed to drop into the existing harness with minimal modifications, helping restore consistent airflow, stable fan speeds, and reliable sequencing without a full system replacement. Tested for electrical integrity and voltage tolerance, this part supports long-term performance in residential HVAC installations.

• Compatible with B4VM and B4VM-B variable-speed air handlers
• Replaces part numbers 036K-C, 048K-C, 060K-C, X24K-BB, X36K-CB, X48K-CB, X60K-CB
• Air handler control board for reliable fan control and sequencing in HVAC systems
• Used-on item, thoroughly tested for performance and durability
• Easy replacement that restores system efficiency with existing wiring harnesses