ICP Furnace Control Board Kit for RGS120SRCB0AAA — OEM Integrated Control | Ships Today
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Overview
This OEM control board kit (PN 1183618) for the ICP/Tempstar/Heil RGS120SRCB0AAA gas furnace is the integrated furnace control (IFC) that runs the entire heating sequence. It interprets the thermostat call, sequences the inducer motor, hot surface igniter, gas valve, and blower, monitors the pressure switch and limit safeties, and flashes diagnostic fault codes through its onboard LED. The kit ships with the mounting hardware and connectors needed for a clean swap. Control boards fail from heat fatigue, power surges, cracked solder joints, and failed relays — symptoms include no response to a heat call, blower or inducer running constantly, or repeated lockouts. Replacing the board restores correct timing and safety supervision so the furnace cycles reliably.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Type | Integrated Furnace Control Board Kit |
| Brand | ICP / Tempstar / Heil |
| Control Voltage | 24V |
| Diagnostics | Onboard LED Fault Codes |
| Fit | OEM Replacement |
Compatibility
Built for the ICP family RGS120SRCB0AAA gas furnace and related ICP, Tempstar, Heil, and Comfortmaker furnaces using the same integrated control. Match the board part number and connector layout to your existing unit before installing.
Installation Guide
- Safety First — Disconnect power at the furnace switch and breaker; verify zero voltage with a multimeter.
- Access — Remove the blower compartment door to expose the control board.
- Document — Photograph every connector and wire location before unplugging.
- Remove — Unplug each harness, release the board standoffs or screws, and lift the old board out.
- Install — Mount the new board with the included hardware and reconnect every harness to the matching terminals per your photo.
- Test — Restore power, run a full heat cycle, and confirm correct sequencing with no fault-code flashes.
Signs You Need a Replacement
- No response from the furnace on a heat call
- Blower or inducer motor runs continuously
- Repeated lockouts or erratic fault-code flashes
- Visible burn marks, corrosion, or failed relays on the board
Shipping & Returns
Ships same day on orders placed 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