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This OEM control board kit (part 1183618) is the integrated furnace control (IFC) brain of the ICP (Tempstar/Heil) RGS091LSCA0AAA gas furnace. It sequences ignition, monitors the safety circuits (limits, pressure switch, flame sense), and controls blower and inducer timing. A failed board causes erratic behavior — no ignition, short cycling, blower running constantly, or a dead furnace. This genuine ICP kit restores correct, reliable sequencing and includes the mounting and connection hardware to swap it in.
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Type | Integrated Furnace Control Board Kit |
| Brand | ICP / Tempstar / Heil |
| Function | Ignition, blower, inducer & safety sequencing |
| Fitment | OEM |
Built for the ICP RGS091LSCA0AAA furnace and used across related ICP-built Tempstar, Heil, and Comfortmaker furnace platforms. Match the board's connector layout and part number to your existing control before ordering.
Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.