Robertshaw 780-003 Ignition Module

The Robertshaw 780-003 is a non-lockout, intermittent pilot ignition control module designed for 24V AC heating systems. This universal replacement ignition control module features a 60-second lockout timing and a 30-second pre-purge period to ensure safe combustion cycles. It is engineered to replace both intermittent pilot and re-ignition systems, featuring safety lockout functionality that shuts down gas flow if the pilot fails to ignite. Field technicians rely on its 780 series architecture for broad compatibility with sensors and valves, utilizing a 100% shutoff mechanism for natural gas and LP gas applications. The J305R ignition module design offers durable performance in high-cycle environments, providing reliable spark-to-pilot ignition sequences. By managing the gas valve and pilot flame monitoring through a single HVAC control board interface, this unit simplifies retrofits and repairs in commercial and residential furnaces.

• Universal Compatibility: Replaces numerous Robertshaw, Honeywell, and Johnson Controls 24V ignition modules.
• Safety Logic: Integrated 60-second lockout cycle prevents hazardous gas accumulation during ignition failure.
• Pre-Purge Cycle: 30-second pre-purge ensures the combustion chamber is cleared of residual gases before the spark ignition begins.
• Versatile Application: UL and CSA certified for use with both Liquid Propane (LP) and Natural Gas systems.
• Simplified Installation: Compact footprint allows for easy mounting in existing cabinets and control panels.

Is the 780-003 compatible with 120V systems?
No, this is a 24V AC module. Applying 120V power will damage the internal circuitry and the gas valve solenoid.

Can this module replace a standing pilot system?
This is an intermittent pilot ignition control. It requires an appropriate pilot burner/igniter-sensor assembly rather than a traditional standing pilot lit by a match.

What does the 30-second pre-purge do?
The purging sequence runs the blower or ensures airflow for 30 seconds to evacuate any unburned fuel from the heat exchanger before attempting to light the pilot.

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.