Gas Heating Hot-Surface Ignition Control for Robertshaw 780-783 ERP

Gas Heating Hot-Surface Ignition Control

Local-sensing hot-surface ignition control for compatible gas-fired heating equipment. Supply: 120VAC; valve load 1.5 A at 24VAC; maximum igniter current 5 A. Manufacturer lists three ignition attempts before lockout, an eight-second valve trial and a 34-second pre-purge/igniter warm-up timer. Match the precise timing and sensing requirements; this is not an intermittent-pilot module.

Part identification

• Catalog vendor: ERP
• Part number: 780-783
• Compatible brands or component references: Robertshaw

Cross-reference part numbers

100-812-05, HS780-34PL-308A

Brand names identify compatible applications or referenced components; no genuine-OEM manufacture claim is made. Match the original part, full equipment model and configuration before ordering.

Diagnosis

Ignition, flame-proving or gas-control faults require professional diagnosis; replacing this component will not correct every no-heat condition.

Installation guidance

A qualified gas-service technician must perform installation. Isolate electrical power and fuel, verify the exact control revision, gas type, ratings, sensing arrangement and equipment wiring diagram, and follow the equipment-specific service procedure. Never bypass flame-safety controls, improvise wiring or change gas regulation without approved instructions. Complete required leak, ignition and combustion checks before returning equipment to service.

This is preparation guidance, not a complete model-specific repair procedure.

Manufacturer document for qualified service — confirm document scope and control revision.

Product/application reference 1