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This OEM furnace control board kit (part 1183618) is the integrated ignition control module for the ICP / Tempstar / Heil RGS091HRCA0AAA gas furnace. The board is the brain of the furnace — it sequences the inducer motor, hot surface igniter, gas valve, and blower while continuously monitoring the pressure switch, limit switches, and flame sensor for safe operation. When the board fails you may see no response to a thermostat call, the inducer running but no ignition, the blower failing to start, error codes flashing on the diagnostic LED, or completely dead operation. A failed board often results from voltage surges, moisture, cracked solder joints, or burned relay contacts. This kit ships as a direct OEM replacement so the firmware and timing match the original.
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Type | Integrated Furnace Control Board Kit |
| Brand | ICP / Tempstar / Heil |
| Fit | OEM Direct Replacement |
| Application | Gas Furnace Ignition & Blower Control |
| Diagnostics | On-board status LED |
Designed for the ICP, Tempstar, and Heil RGS091HRCA0AAA furnace. Part number 1183618 ensures correct connector layout, relay ratings, and ignition timing for this model.
Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.