Robertshaw 780U-DS20 Ignition Module Refrigerant this furnace relay S1-024-11772-700 is

this furnace relay S1-024-11772-700 is the primary diagnostic check for continuity

while commonly used for steam

ensuring quieter operation

the 15 Amp rating provides a sufficient buffer for many small to medium induction motors commonly found in HVAC and refrigeration equipment

25A Fixed Threshold: Ensures sensitive detection of status for low-draw equipment and failing belt drives

Robertshaw 780U-DS20 Ignition Module Refrigerant this furnace relay S1-024-11772-700 isRobertshaw 780U DS20 is a universal direct spark ignition (DSI) control module designed for gas fired HVAC equipment, including furnaces, boilers, and rooftop units. This ignition control is used to safely manage burner ignition sequences by providing timed spark ignition and flame sensing for reliable system startup and operation. The module is commonly used as a replacement ignition control in systems requiring a universal solution for direct spark