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This OEM control board kit (part number 1183618) is the integrated furnace control (IFC) that runs the entire heating sequence on the ICP / Tempstar / Heil RGS150SECA0AAAA. It manages inducer startup, pressure-switch verification, hot surface igniter timing, gas valve operation, flame sensing, and blower on/off delays, while monitoring safety limits and reporting fault codes through its diagnostic LED. As a kit, it ships with the mounting and connector hardware needed for a clean swap. Control boards fail from power surges, heat stress, corroded relays, and burnt traces around the gas valve and igniter terminals — and a failed board can stop heating entirely, cause erratic blower behavior, or trip random lockouts.
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Type | Integrated Furnace Control Board Kit |
| Brand | ICP (Tempstar / Heil) |
| Functions | Ignition, Blower, Flame Sense, Safety Limits |
| Fit | OEM Replacement |
Direct OEM fit for the ICP / Tempstar / Heil RGS150SECA0AAAA furnace and related ICP-family units that originally used control board 1183618. Verify the board layout and connector pinout against your existing board before installing.
Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.