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This genuine OEM control board kit (part number 1183618) is the integrated furnace control (IFC) — the brain of your ICP/Tempstar/Heil RGS213STCA0AAAA gas furnace. It sequences the entire heating cycle: it powers the inducer, energizes the hot surface igniter, opens the gas valve, monitors the flame sensor, and times the blower on and off. It also manages safety lockouts and stores diagnostic fault codes on its LED. When the board fails you may see a completely dead furnace, a blower that runs constantly, ignition that never starts, or repeated lockouts with no clear cause. The kit ships with the mounting hardware and connector references needed for a clean swap.
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Type | Integrated Furnace Control Board Kit |
| Brand | ICP (Tempstar / Heil) |
| Function | Ignition, blower & safety control |
| Fitment | OEM Replacement |
Directly fits the ICP/Tempstar/Heil RGS213STCA0AAAA gas furnace and ICP-family models that specify control board kit 1183618. Match the connector layout and board footprint to your existing control before installing.
Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.