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Robertshaw 785-001 pilot relight kit, compact HVAC control module, matte grey finish

Robertshaw

Robertshaw 785-001 Pilot Relight Kit 24V AC HVAC Control

SKU CH-CQS5-DHJMZ

Pilot relight kit operates on 24 V AC across -40 °F to 185 °F with 0.8-second ignition cycle, 1 A main valve output and 0.1 mA flame sensor current

  • 24 V AC operation powers standard HVAC systems
  • 8 second ignition cycle relights pilots quickly
  • 1 A main valve output drives gas valves reliably
  • 1 mA flame sensor current detects flame accurately
  • 40 °F to 185 °F range suits extreme environments

Pilot Relight Kit for HVAC Systems

The Robertshaw 785-001 is a 24V AC pilot relight kit designed for HVAC controls. It provides automatic ignition control for compatible heating equipment. Installers and maintenance technicians use it to restore reliable pilot ignition in gas-fired appliances.

Thermals, Noise and Power Draw

The unit operates reliably from -40 to 185 degrees Fahrenheit. Main valve current output is 1 A while flame sensor current output is 0.1 mA. Ignition cycle time completes in 0.8 seconds. No lock-out or pre-purge timing applies to this model.

Replacement and Upgrade Scope

This kit replaces failed pilot relight assemblies in systems compatible with the Universal series. It suits units requiring 24V AC control with the specified current ratings. The jump is worth it when the existing module no longer achieves consistent ignition within the rated cycle time.

Highlights

  • 24 V AC operation powers standard HVAC systems
  • 8 second ignition cycle relights pilots quickly
  • 1 A main valve output drives gas valves reliably
  • 1 mA flame sensor current detects flame accurately
  • 40 °F to 185 °F range suits extreme environments

Specifications

BrandROBERTSHAW

Questions about this item

How do I wire the 24V AC supply to the Robertshaw 785-001 kit so the ignition cycle starts within 0.8 seconds?

Connect the 24 V AC line to the designated input terminals; the kit then completes its ignition cycle in 0.8 seconds.

Which component of the Robertshaw 785-001 kit is most likely to need replacement after extended service?

The flame sensor, which operates at 0.1 mA output, is the part most likely to require replacement over time.

At what temperature will the Robertshaw 785-001 kit stop operating reliably during continuous heating?

The kit is rated up to 185 °F; sustained exposure above that limit will cause it to stop operating reliably.

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