Nordyne 902987 Kit

When you are upgrading an older Nordyne furnace for air conditioning or heat pump compatibility, the Nordyne 902987 Control Board Kit is the essential drop-in solution. This OEM replacement part serves as the primary bridge between contemporary 4-7 wire thermostats and secondary HVAC equipment, allowing for technical accuracy in staged cooling and reversing valve operation. As the updated version for 902986, this kit resolves the engineering limitations of legacy 2-wire setups found in mobile home electric furnaces, including Miller E1, E2, and E3 models.

The kit includes a professional-grade integrated furnace control board, specialized adapter harnesses, and heavy-duty mounting hardware to streamline the installation process. By utilizing high-impact, flame-retardant materials and precise relay logic, the 902987 ensures reliable signal communication to your compressor and blower assembly. This transition to a multi-wire relay pack eliminates common communication faults often encountered when retrofitting Intertherm or Aire Force units with modern digital thermostats.

• Universal Retrofit Compatibility: Specifically engineered to integrate 4-7 wire thermostats into legacy Nordyne, Miller, and Intertherm electric furnace platforms.
• Enhanced System Logic: Provides the necessary electrical pathways for heat pump reversing valve control and split-system cooling operations.
• Direct OEM Replacement: Replaces obsolete parts including 902986, 703110, and 902798, ensuring proper terminal alignment.
• Complete Tech Kit: Ships with all required wiring harnesses and mounting brackets to facilitate a fast, standard-compliant installation on the job site.

Is the 902987 compatible with my existing 2-wire thermostat?

No, this kit is specifically designed to allow your furnace to use a modern 4-7 wire thermostat. If you are upgrading your system to include air conditioning or a heat pump, you must replace your old 2-wire thermostat and potentially pull new thermostat wire to utilize this control board kit.

Will this board fix a 1-hour lockout error?

While a faulty relay can cause system errors, a lockout is often a safety response to a tripped limit switch or flame sensor issue. If your existing board is failed or intermittently dropping the 24V signal to the contactor, installing the Nordyne 902987 Control Board Kit will restore proper system communication.

Can I use this for a gas furnace retrofit?

This kit is primarily designed for Nordyne electric furnaces (E1, E2, E3, EB, and BH series). Always verify your specific furnace model number against the factory wiring diagram to ensure the relay logic matches your application.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.