Rheem-Ruud 62-102635-81 Control Board

The Rheem-Ruud 62-102635-81 Control Board is a mission-critical Integrated Furnace Control (IFC) designed for two-stage gas furnaces equipped with Permanent Split Capacitor (PSC) blower motors. As a direct OEM replacement part for the legacy 62-24320-02 and 62-102635-01 units, this board handles the full sequence of operation including inducer motor ignition, flame sensing, and blower motor speed control. Field technicians will find the on-board dipswitch configuration straightforward for matching heating and cooling CFM requirements. This board is engineered to govern 80% AFUE systems, providing the high-precision logic needed to manage gas valve staging and limit-switch monitoring. Whether you are troubleshooting erratic limit trips or a stuck blower relay, this ProTech furnace circuit board ensures the system returns to factory-specified timing and safety parameters. It includes the necessary ground wire assembly and wiring diagram for a clean, efficient install in RGLK, RGLQ, RGPK, and RGPQ series units.

• Universal Staging Logic: Designed for high-reliability management of two-stage heating cycles and cooling integration.
• Direct OEM Compatibility: Serves as a drop-in replacement for part number 62-24320-02, ensuring terminal alignment and wiring consistency.
• Enhanced Diagnostics: Features integrated LED error codes to facilitate rapid field troubleshooting of pressure switches and ignition failures.
• Complete Installation Kit: Ships with the 62-102635-81 wiring diagram and supplemental wire harness to accommodate updated grounding requirements.
• Professional Grade Reliability: Built for 24V Class 2 circuits, handling the complex sequencing of gas furnace ignition and fan-off delays.

Is the 62-102635-81 compatible with older Rheem Criterion II models?
Yes, this is the current factory-authorized replacement for original Criterion II boards, specifically those utilizing PSC motors rather than ECM units.

What do the flashing LED codes on this board indicate?
The diagnostic lights signal specific system faults, such as open limits, pressure switch failure, or flame rollout, allowing techs to isolate mechanical issues from electrical ones quickly.

Do I need to change the dipswitch settings during installation?
Yes, you must match the jumper and dipswitch positions to the specific furnace model’s tonnage and staging requirements as detailed in the included instruction sheet.

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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.