Robertshaw 780-781 HSI Module

For contractors servicing older Amana systems, the Robertshaw 780-781 HSI Module serves as the reliable technical replacement for the Amana HS1000A, B, C, and E series. This hot surface ignition control is engineered to provide precise sequencing for gas-fired heating equipment, functioning perfectly as the Amana R0156767 equivalent. Built with solid-state logic, the module manages the critical ignitor heat-up time and monitors flame rectification to ensure safe burner operation. The unit is designed for 120V AC supply with a 1.5 Amp max load rating, and its compact footprint is ideal for tight furnace cabinets. As a veteran-preferred HVAC replacement part, it offers a 90-second trial for ignition before initiating a safety lockout. When you encounter a failed Amana furnace ignition control, swapping in the 780-781 ensures field-tested compatibility and reduced downtime. This hot surface ignition module is also known as D69976-04 in various OEM catalogs, making it a versatile addition to any service truck.

• OEM Compatibility: Exact replacement for Amana HS1000 series and Goodman R0156767, eliminating the need for complex rewiring or bracket modifications.
• Robust Flame Sensing: Utilizes advanced flame rectification logic to monitor the burner continuously through the heating cycle.
• Safety Lockout Sequence: Includes a built-in safety circuit that shuts off gas flow if ignition is not proven within the specified trial period.
• Field Reliability: Rated for ambient temperatures from -40°F to 176°F, ensuring performance in extreme mechanical room environments.
• Simplified Diagnostics: Molded-in terminal barriers prevent cross-wiring and assist in faster multi-meter testing during troubleshooting.

Is the 780-781 a direct drop-in for the Amana HS1000E?
Yes, this HSI module is specifically designed to replace the Amana HS1000 series, including the A, B, C, and E versions, without requiring additional adapters.

What is the difference between Robertshaw 780-781 and R0156767?
Technically, they are identical. R0156767 is the Goodman/Amana OEM part number, while 780-781 is the Robertshaw manufacturer number for the same control board.

How do I reset the module if it goes into lockout?
If the system fails to sense a flame and enters lockout, power must be interrupted by cycling the thermostat or the system switch for at least 10 seconds to initiate a new ignition sequence.

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.