ICP Furnace Control Board for RGS243SEAA0AAAA — OEM 1183618 Control Board Kit | Ships Today
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Overview
The OEM control board kit (part number 1183618) is the integrated furnace control (IFC) for the ICP Tempstar Heil RGS243SEAA0AAAA gas furnace. This board is the brain of the furnace — it manages the ignition sequence, sequences the inducer and blower motors, monitors safety limits and flame sense, and communicates with the thermostat. When the board fails, the furnace may not respond to a heat call, may short-cycle, may run the blower continuously, or may flash a diagnostic fault code. This genuine OEM kit ships with the correct board to restore full furnace operation.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Description | Kit, Control Board |
| Type | Integrated Furnace Control Board |
| Brand | ICP (Tempstar / Heil) |
| Fits Model | RGS243SEAA0AAAA |
| Fit | OEM Replacement |
Compatibility
Built as a direct-fit replacement for the ICP Tempstar Heil RGS243SEAA0AAAA furnace and other ICP-family gas furnaces that specify OEM part 1183618. ICP, Tempstar, Heil, and Comfortmaker furnaces commonly share control boards across model lines. Verify your furnace calls for 1183618 before ordering to ensure correct fitment.
Installation Guide
- Safety First — Disconnect power at the furnace switch and breaker. Verify zero voltage with a multimeter before proceeding.
- Access — Remove the furnace control-compartment service panel.
- Document — Photograph every wire and connector on the existing board before disconnecting — this is critical for a correct reconnection.
- Remove — Unplug all harness connectors and low-voltage wires, remove the board mounting screws/standoffs, and lift out the old board.
- Install — Mount the new board, then reconnect every wire and connector exactly per your photos. Set any DIP switches/jumpers to match the original board.
- Test — Restore power and run a full heat cycle. Confirm proper ignition, inducer and blower staging, and a clear (no-fault) diagnostic LED.
Signs You Need a Replacement
- Furnace is completely unresponsive to a thermostat call for heat.
- Blower runs constantly or fails to start on a heat cycle.
- Persistent diagnostic fault codes or no LED activity on the board.
- Intermittent operation, short-cycling, or scorched/burned spots on the board.
Shipping & Returns
Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.
Shipping Information
- Orders placed before 3PM CST ship same business day
- Standard delivery: 2-5 business days
- Express shipping available at checkout
- Free shipping on orders over $75
- Tracking number emailed upon shipment
Return Policy
- 30-day returns on unused parts in original packaging
- Electrical parts (capacitors, contactors, control boards) are final sale once installed
- Email info@nationalhvacparts.com to initiate a return
- Refunds processed within 5-7 business days