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Robertshaw 780-790 Hot Surface Ignition (HSI) Module HS780-17NL-304A

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Special Price $116.97 Regular Price $134.51
In stock
SKU
780-790
The Robertshaw 780-790 HSI Module is an advanced part of HVAC systems that provides for durable ignition control. It works includes the detection of the flame and control of the heating process with the help of high-speed ignition cycles. The working process has an integrated hot surface ignition system that ignites the burner safely to ensure efficient operation. These Advantages are increased durability and better energy efficiency, which make it an essential component of modern HVAC systems for superior performance.
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HVAC Controls & Electrical, Control Boards & Modules
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Specifications

  • Type: Hot Surface Ignition Module
    Manufacturer Name: Robertshaw
    Product Number: 780-790
    OEM Part Number: 780-790
    Product Description: Hsi Module Hs780-17Nl-304A
    Weight:0.42lbs/190.51g

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    Product Questions (2)
    Customer Questions
    What maintenance is required for the Robertshaw 780-790 Hot Surface Ignition Module?

    Inspect the module for secure wiring and proper mounting. Keep it clean and free from dust or moisture. Check connections and verify ignition sequence performance. Routine maintenance supports ensure accurate ignition and safe system operation.

    What are common issues with the Robertshaw 780-790 Hot Surface Ignition Module?

    • Failure to ignite burner.
    • Intermittent ignition operation.
    • Electrical faults affecting control signals.
    • Module not responding to startup commands.

    Installation Steps

    Step 1: Turn off power and gas supply for safety.

    Step 2: Remove access panel from furnace.

    Step 3: Disconnect wires from old ignition module.

    Step 4: Unscrew and carefully remove the existing unit.

    Step 5: Mount the new module in the same position.

    Step 6: Reconnect wires according to the wiring diagram.

    Step 7: Restore power and gas, then test system operation.