Hydrotherm BM-8814 Ignition Module

The Hydrotherm BM-8814 Ignition Module (OEM Part # 35-655927-001) is a critical component for restoring direct spark or intermittent pilot functionality in high-efficiency Hydrotherm boilers and furnaces. This solid-state ignition control module provides precise timing and sequence control to ensure safe burner light-off. As a direct OEM replacement part, it is electrically and physically identical to legacy part numbers 35-655922-001 and 35-655927-001, allowing for a seamless drop-in installation without field modifications. For technicians troubleshooting a no-spark condition or a lockout on Hydrotherm equipment, this module offers the exact fenwal ignition specifications required for system integrity. Built to withstand the thermal demands of residential and commercial boiler rooms, the BM-8814 regulates gas valve control and flame sensing with professional-grade reliability, maintaining the original equipment’s high-performance operating standards.

Key Benefits for Technicians:

• Direct Cross-Reference: Replaces Hydrotherm 35-655922-001 and 35-655927-001 without wiring harness adapters.
• OEM Reliability: Genuine Hydrotherm ignition module ensures compatibility with existing flame sensors and gas valves.
• Optimized Sequence Timing: Engineered for accurate pre-purge and ignition timings to prevent delayed ignition or nuisance lockouts.
• Durable Circuitry: Designed to resist voltage fluctuations and high ambient temperatures commonly found in mechanical rooms.

Common Questions:

Is the BM-8814 compatible with all Hydrotherm boilers?
This module is specifically designed for models utilizing the 35-655927-001 or 35-655922-001 control boards. Always verify the part number on the existing module before installation.

Can this module replace a universal ignition control?
While universal controls exist, using this OEM replacement part preserves the original safety certifications and factory-specified timing of the heating appliance.

What causes these modules to fail?
Most failures result from moisture exposure, electrical surges, or extreme heat cycling. Replacing with a genuine Hydrotherm part ensures the internal components meet original specifications.

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.