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This is the OEM integrated furnace control board kit (part number 1183618) for the ICP / Tempstar / Heil RGX048KECA0AAA gas furnace. The control board is the brain of the furnace — it manages the ignition sequence, sequences the inducer motor, gas valve, and hot surface igniter, monitors flame via the flame sensor, controls blower timing, and runs continuous safety diagnostics. It operates on 120V line power and supplies 24V to the low-voltage control circuit. When this board fails, the furnace typically will not respond to a call for heat, locks out after failed ignition attempts, short-cycles, or throws diagnostic LED fault codes. Replacing the board restores reliable ignition and safe operation.
| Spec | Value |
|---|---|
| Part Number | 1183618 (KIT CONTROL BOARD) |
| Type | Integrated Furnace Control (IFC) |
| Brand | ICP / Tempstar / Heil |
| Line Voltage | 120V AC |
| Control Voltage | 24V AC |
| Fit | OEM Replacement Kit |
Engineered as a direct-fit replacement for the ICP / Tempstar / Heil RGX048KECA0AAA gas furnace. This board kit also services many related RGX-series furnaces built on the same platform under the ICP family of brands (Heil, Tempstar, Comfortmaker, Arcoaire). Always confirm the part number on your existing board before ordering.
Ships same day on orders placed before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.