Weil McLain 381-330-025 Control Module

The Weil McLain 381-330-025 Control Module is the designated OEM replacement for the obsolete 381-330-023, engineered specifically for high-efficiency hydronic systems. This integrated boiler control (IBC) manages critical sequencing for gas-fired units, including the Weil McLain GV90+ series. Operating on 24VAC control voltage and 120VAC line voltage, this module regulates the igniter, inducer motor, gas valve, and circulator pumps. It features advanced ignition control logic with a 15-second flame trial and integrated 10-second post-purge cycles to ensure safe combustion and heat exchanger protection. As a veteran-grade HVAC replacement part, it provides precise boiler control assembly monitoring, utilizing LED diagnostics to communicate system status and fault codes directly to the service technician. This electronic ignition module is critical for restoring system communication between the room thermostat and the boiler limit circuits, ensuring reliable seasonal performance in residential and light commercial applications.

• Direct OEM Compatibility: Engineered as the factory-authorized replacement for the 381-330-023, ensuring seamless terminal alignment and housing fit.
• Enhanced System Logic: Manages the Weil McLain GV90+ sequence of operation, including pre-purge, pilot ignition, and main burner modulation.
• Integrated Safety Diagnostics: On-board LED indicators identify flame failures, limit structural faults, and airflow blockages for rapid troubleshooting.
• Robust Voltage Handling: Designed for standard 120V/60Hz line input with a stable 0.5A draw, protecting sensitive internal circuitry from minor fluctuations.

• Is the 381-330-025 compatible with older 381-330-023 installations? Yes, this is the official replacement control module designed to drop into existing harnesses without field modification.
• What does a flashing flame light on the module indicate? This typically signifies a failure to sense flame during the 15-second trial; check the flame sensor and gas supply pressure.
• Will this module resolve intermittent inducer motor issues? If the inducer fail-to-start is caused by a logic board relay failure, this integrated boiler control will restore proper sequencing.

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.