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This OEM control board kit, ICP part number 1183618, is the integrated furnace control (IFC) for the ICP, Tempstar, and Heil RGS213HRCA0AAAA gas furnace. The control board is the brain of the furnace: it manages the ignition sequence, sequences the inducer, igniter, gas valve, and blower, monitors safety inputs such as the flame sensor and pressure switch, and reports fault codes through its diagnostic LED. Boards fail from voltage surges, heat, corroded relays, and cracked solder joints — symptoms range from a completely dead furnace to short-cycling, no blower, no ignition, or repeating flash codes that don't correspond to a sensor fault. Supplied as a kit for a direct OEM replacement.
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Type | Integrated furnace control board kit |
| Brand | ICP / Tempstar / Heil |
| Application | Gas furnace control |
| Fit | OEM Replacement |
Designed for the ICP/Tempstar/Heil RGS213HRCA0AAAA gas furnace. Always match the original board's part number and connector layout — control boards are model-specific. Confirm 1183618 against your existing board before installing.
Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.