DDORUU ICM2805A Furnace Control Board – Replacement for Nordyne 903106/624631

Premium replacement for Nordyne-based furnaces

The DDORUU ICM2805A furnace control board is designed to be a dependable replacement for aging Nordyne systems and a wide range of compatible furnace modules. It works with G3, G4, G5, G6, M2, and M3 modules, helping maintain consistent ignition sequences and controlled operation across your home heating setup.

What makes it a solid choice

• Replaces Nordyne 903106 and 624631 boards, with broad compatibility across common brands.
• Microprocessor-driven control for precision timing and coordinated operation of gas valve, igniter, inducer, and blower.
• Diagnostic LEDs simplify testing and troubleshooting during service or replacement.

Wide compatibility

• Compatible with Nordyne, Miller, Gibson, Intertherm, Frigidaire, Philco, Thermal Zone furnaces.
• Also compatible with Carrier HK42FZ0-xx series control boards, making it suitable for mix-brand installations.

Technical overview at a glance

The board supports Line voltage from 98 to 132 VAC at 60 Hz and includes a 5 A ignitor circuit at 120 VAC. It manages cool blower loads up to 2 HP at 240 VAC, and heat loads up to 1/2 HP at 240 VAC. Inducer motor current is rated to handle typical draft requirements, while the gas valve control is built to handle standard valve currents. These specifications are aligned with common residential furnace environments.

Practical benefits for homeowners and technicians

• Twinning compatibility lets one DDORUU board synchronize with other ICM2805A units in compatible systems, supporting consistent performance across modules.
• Integrated diagnostics help quicken service calls and reduce downtime during ignition cycles and lockouts.

The ICM2805A is a thoughtful upgrade for systems needing a reliable, multi-brand replacement that aligns with existing wiring and module configurations. It’s designed to be a practical option for seasonal maintenance or system modernization, offering flexibility without overpromising results. If you’re unsure about fit for your specific furnace family, consult a qualified technician to confirm compatibility and safe installation.

Note: This product is intended for replacement in approved systems and should be installed by a professional if you are not familiar with HVAC wiring and safety practices.