ICP Furnace Control Board Kit for RGS120SECA0AAA — OEM Replacement | Ships Today
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Overview
This is a genuine OEM furnace control board kit (OEM #1183618) for the ICP Tempstar Heil RGS120SECA0AAA gas furnace. The integrated furnace control (IFC) is the brain of the heating system — it sequences the inducer motor, hot surface igniter, gas valve, and blower, monitors the pressure switch and flame sensor for safe operation, and stores diagnostic fault codes on its onboard LED. When the board fails the furnace may behave erratically: no response to a heat call, blower running continuously, ignition sequence stalling, or repeated lockouts with no clear mechanical cause. Because the board governs every safety interlock, a failed or intermittent control board should always be replaced with a correct OEM unit rather than bypassed. This kit includes the board and mounting provisions for a direct factory replacement.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Type | Integrated Furnace Control Board Kit |
| Brand | ICP (Tempstar / Heil) |
| Application | Gas Furnace Ignition & Blower Control |
| Diagnostics | Onboard Fault-Code LED |
| Fitment | OEM Direct Replacement |
Compatibility
Built for the ICP / Tempstar / Heil RGS120SECA0AAA and shared across Comfortmaker, Heil, and Tempstar furnaces that use this control kit. Confirm the connector layout and board footprint against your existing board before installing.
Installation Guide
- Safety First — Disconnect electrical power and shut off the gas, then verify zero voltage at the board with a multimeter.
- Access — Remove the furnace blower-compartment service panel.
- Document — Photograph every harness plug and terminal before disconnecting — connector position is critical.
- Remove — Unplug each harness, remove the mounting screws, and lift out the old control board.
- Install — Mount the new board, reconnect every harness exactly per your photos, and verify all locking tabs seat fully.
- Test — Restore power and gas, call for heat, and confirm the full ignition sequence and blower operation with no fault codes.
Signs You Need a Replacement
- No response to a thermostat heat call despite good power and gas.
- Blower runs continuously or fails to start after ignition.
- Repeated lockouts or erratic sequencing with no mechanical fault.
- Onboard LED dark, frozen, or flashing a hard control fault.
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