Laars Heating Systems E2311900 Ignition Control

The Laars Heating Systems E2311900 Ignition Control is a critical OEM replacement part designed for high-performance residential and commercial hydronic applications. This electronic ignition module manages the complete sequence of operation, including pre-purge timings, trial for ignition, and integrated flame sensing. Engineered to replace faulty controls in Laars Pennant boilers and Mighty Therm volume water heaters, this module ensures precise 24VAC signal distribution to the gas valve and spark igniter. When a system presents a four-flash diagnostic code or fails to send 120V to the igniter, upgrading to a genuine E2311900 ignition board is essential for maintaining proper flame rectification and preventing nuisance lockouts. Field-tested for durability, this control board handles complex safety circuits, monitoring the vent pressure switch and limit sensors to maintain safe combustion. For contractors performing boiler troubleshooting, this Laars replacement module offers a direct-fit solution that preserves the integrity of the original equipment's combustion cycle.

Key Benefits:

• Precise Ignition Timing: Automates the pre-purge and post-purge cycles to ensure safe flue gas evacuation.
• Advanced Diagnostics: Features integrated status LEDs to quickly identify ignition lockouts and hardware failures.
• OEM Compatibility: Specifically calibrated for Laars Heating Systems to provide seamless integration with existing wire harnesses.
• Enhanced Safety: Continuously monitors the flame sensor signal (minimum 1 micro amp) to prevent gas buildup.

Common Questions:

What does it mean if my Laars boiler shows a four-flash code on the ignition control?
A four-flash code typically indicates an igniter failure. You should test the resistance of the igniter and verify that the E2311900 control is outputting the correct voltage. If the igniter is within spec but receives no power, the module likely requires replacement.

Can I use this module for both Natural Gas and LP units?
Yes, this Laars ignition module is compatible with systems configured for both Natural Gas and Liquid Propane, provided the appliance's gas valve and burner orifice are correctly set.

How do I confirm if the E2311900 is the correct part for my specific boiler?
Compatibility should be verified by checking the serial number and model of your Laars boiler or water heater. This control is widely used in the Pennant and Mighty Therm series but always requires a cross-reference with your unit's parts list.

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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.