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Robertshaw 780-002 ignition module rectangular black housing

Robertshaw

Robertshaw 780-002 hvac control

SKU CH-WK5A-EMZ8Z

An ignition module that operates from -40 to 175 degrees Fahrenheit with a 60-second cycle and 1.5 amp main valve output

  • Reliable ignition in extreme cold down to -40°F
  • Consistent spark timing with 60-second ignition cycle
  • Strong valve control delivering 1.5A main output
  • Sensitive flame detection at 0.7mA sensor current
  • Automatic recovery after 1-minute lockout period

Ignition control module

The Robertshaw 780-002 is an ignition control module designed for HVAC systems that require reliable flame monitoring and automatic sequencing. It suits technicians and facility managers who need a direct replacement part for compatible universal series equipment.

Operating range and timing

The unit functions from -40 degrees F to 175 degrees F and enforces a five-minute pre-purge before each ignition attempt. A sixty-second ignition cycle allows three retries before a one-minute lockout engages, while the main valve output is rated at 1.5 A and the flame sensor at .7 mA.

Replaces older universal controls

This module upgrades legacy universal-series ignition controls that lack the same retry logic or temperature tolerance. The jump is worthwhile when the existing control cannot meet the specified pre-purge, cycle time or current ratings required by the appliance.

Highlights

  • Reliable ignition in extreme cold down to -40°F
  • Consistent spark timing with 60-second ignition cycle
  • Strong valve control delivering 1.5A main output
  • Sensitive flame detection at 0.7mA sensor current
  • Automatic recovery after 1-minute lockout period

Specifications

BrandROBERTSHAW

Questions about this item

What is the main valve current output of the Robertshaw 780-002?

The main valve current output is 1.5 A, which caps the electrical load the module can drive during ignition.

What operating temperature range must the mounting location support?

The module operates from -40 °F to 175 °F, so the mounting spot must stay within those limits.

How is the ignition module installed, and what step is often missed?

Wire the module per the furnace schematic, then verify the flame sensor current reaches 0.7 mA during the 60-second ignition cycle; skipping the sensor check causes lockout after three retries.

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