780-845 Robertshaw Pilot Control


Ignition Module SP845 Intermittent Pilot – Lockout

SKU: 780-845 Category:



The Robertshaw® 780 Series Pilot Controls feature flame rectification with solid-state logic and flame sensing to provide automatic sequencing that will ensure proper operation of an intermittent pilot ignition device. When the thermostat calls for heat, the 780 series control simultaneously initiates ignition sparking and opens the pilot valve portion of the gas valve. Pilot flame recognition stops ignition sparking and opens the main valve portion of the gas valve. Pilot burner flame is continuously monitored at a synchronous frequency for the duration of the heating cycle. Should the pilot flame fail during the heating cycle, the control will shut off the main valve until the pilot flame is established.

The Robertshaw 780-845 lockout ignition control provides 90 seconds of spark, followed by a six minute time delay (purge) between ignition attempts. If the pilot flame is not sensed after three tries, the control goes into a one-hour lockout period. At the end of the lockout period, if the demand for heat is still present, the unit will repeat the three tries for ignition.

Features and Benefits

  • Reduces truck stock inventory, saving space and money
  • Easy-to-install with complete in-depth installation instructions
  • Pilot and main valves draw 1 Amp at 0.5 power factor
  • Combined load at 1.5 Amps at 0.4 power factor
  • 95% relative humidity noncondensing at 104°F
Series Application 780-845, 24V Intermittent Pilot Ignition
Spark Rate 4 to 15 per second
Maximum Total Current Load 1.5 Amps
Flame Failure Re-Ignition Time 2 seconds
Safety Lockout Timing 90 seconds
Thermostat Anticipator Setting 0.7 Amps
Temperature Range -40°F to 175°F
Flame Sensor Current 0.7 mA DC @ 25°C
Transformer 24V AC, 20VA
Control Voltage 24V AC 50/60 Hz

Additional information

Weight 2 lbs
Dimensions 5.3 × 6.7 × 3.05 in

Part Number



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