ICP Furnace Control Board Kit for RGS120HSAA0AAA — OEM Circuit Board | Ships Today
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Overview
This genuine OEM control board kit (PN 1183618) is the integrated furnace control (IFC) brain of the ICP/Tempstar/Heil RGS120HSAA0AAA gas furnace. It sequences the entire heating cycle — verifying the pressure switch, energizing the hot surface igniter, opening the gas valve, proving flame, and timing the blower on and off delays — while monitoring safety limits and flashing diagnostic fault codes. When a control board fails from power surges, corrosion, burned relays, or cracked solder joints, the furnace may not start, may short-cycle, leave the blower running continuously, or throw erratic fault codes. Installing a new OEM board restores correct ignition sequencing, blower control, and safety supervision.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Type | Integrated furnace control board kit |
| Brand | ICP / Tempstar / Heil |
| Functions | Ignition sequencing, blower timing, safety & diagnostics |
| Fit | OEM |
| Application | Gas furnace control |
Compatibility
Engineered for the ICP/Tempstar/Heil RGS120HSAA0AAA gas furnace and related ICP-family models specifying this control board kit. Match the board's part number and connector layout to your original before installing.
Installation Guide
- Safety First — Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter.
- Access — Remove the furnace blower/control compartment service panel.
- Document — Photograph every connector and wire location on the old board before unplugging anything.
- Remove — Unplug all harness connectors, remove the mounting screws/standoffs, and lift out the old board.
- Install — Mount the new board and reconnect each harness to the matching terminal per your photo.
- Test — Restore power, run a full heat cycle, and confirm proper ignition, blower timing, and no fault codes.
Signs You Need a Replacement
- Furnace won't start or has no response to a heat call.
- Short-cycling or blower that runs continuously.
- Erratic or repeating diagnostic fault codes.
- Visible burn marks, corrosion, or cracked solder 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