Description
The ICM2805A is a cost-effective form fitting and functional replacement control board for Nordyne 903106-Kit (for use with G3, G4, G5, G6, M2 and M3 furnance modules)
Key Features
Low-Cost Nordyne Replacement
Replaces 624631, 624631B, and 903106-Kit boards used in G3–G6 and M-series furnaces. One part covers most jobs.
All-in-One Furnace Control
Controls gas valve, inducer, blower, and ignitor from a single integrated board with standard operation sequence.
Microprocessor-Based Precision
Manages ignition timing, blower delays, and safety checks with consistent, digital accuracy.
Safety and Monitoring
Monitors flame sense, ignition, and safety switches (pressure, rollout, limit) and shuts down on fault.
Diagnostic LEDs
LEDs show system status and error codes to quickly pinpoint ignition or airflow issues.
Twinning Compatible
Works in twin furnace setups when matched with another ICM2805A.
Sized to Fit Existing Furnaces
Compact 4.5″ × 6″ × 1.5″ board fits original mounting space.
