We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Robertshaw 780-787 ignition control module rectangular grey plastic housing

Robertshaw

Robertshaw 780-787 Ignition Control air conditioning

SKU CH-R9N4-TQV1D

Ignition control for natural-gas HVAC systems, operating from -40 °F to 176 °F with a 34-second pre-purge and 1.5 A valve output at 120 V AC

  • Operates reliably from -40 to 176 degrees Fahrenheit
  • 34-second pre-purge clears residual gas before ignition
  • 5-amp main valve output ensures strong valve actuation
  • 120-volt AC input suits standard RV power systems
  • Designed specifically for natural gas fuel applications

Ignition Control for Natural Gas Systems

The Robertshaw 780-787 is an ignition control module designed for natural gas HVAC equipment. It operates on a 120V AC input and delivers a main valve current output of 1.5 A. This component suits technicians servicing compatible heating appliances.

Operating Range and Pre-Purge Timing

The unit functions reliably between -40 Degrees F and 176 Degrees F. A fixed pre-purge time of 34 sec runs before ignition attempts begin. No fan or active cooling is required for normal operation within this temperature window.

Direct Replacement for Failed Modules

This part replaces a faulty ignition control exhibiting no spark, intermittent valve operation or lockout faults. The jump is worth it when diagnostics confirm the original board has failed and the appliance wiring matches the 120V AC supply and 1.5 A valve output specifications.

Highlights

  • Operates reliably from -40 to 176 degrees Fahrenheit
  • 34-second pre-purge clears residual gas before ignition
  • 5-amp main valve output ensures strong valve actuation
  • 120-volt AC input suits standard RV power systems
  • Designed specifically for natural gas fuel applications

Specifications

BrandROBERTSHAW

Questions about this item

How is the 780-787 ignition control wired into a 120V AC system, and what step do installers often miss?

Connect the 120V AC supply to the designated input terminals; the step often missed is allowing the full 34 second pre-purge before the main valve opens.

What maintenance will the 780-787 need over time in natural gas service?

Periodically verify the 1.5 A main valve current output and clean the flame sensor to maintain reliable ignition cycles.

At what temperature limit does the 780-787 stop operating during sustained high-heat conditions?

The control reaches its maximum operating temperature at 176 degrees F, which is the first limit encountered under sustained use.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.