ICP Furnace Control Board Kit for RGS303LSFA0AAAA — OEM Replacement | Ships Today
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Overview
The ICP OEM Control Board Kit (part number 1183618) is the integrated furnace control (IFC) that runs the RGS303LSFA0AAAA gas furnace. It sequences the inducer, hot surface igniter, gas valve, and blower while monitoring all safety inputs including limit switches, flame sense, and pressure switches. A failed control board causes no-heat conditions, erratic blower operation, blank or flashing diagnostic LEDs, and failure to respond to the thermostat. This kit ships as a complete OEM assembly for a direct, code-compliant replacement.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Description | Kit, Control Board |
| Type | Integrated Furnace Control (IFC) |
| Brand | ICP (Tempstar / Heil / Comfortmaker) |
| Fits Model | RGS303LSFA0AAAA |
| Application | Gas Furnace |
| Fitment | OEM Direct Replacement Kit |
Compatibility
Designed as the factory control for the ICP Tempstar Heil RGS303LSFA0AAAA gas furnace. The kit includes the correct board and mounting hardware so connectors and standoffs line up with the original. Verify the model and serial on the furnace rating plate before ordering, as control boards are model-specific.
Installation Guide
- Safety First — Disconnect power at the furnace switch and breaker and verify zero voltage with a multimeter.
- Access — Remove the furnace control-compartment service panel.
- Document — Photograph every wire harness and terminal on the existing board before disconnecting.
- Remove — Unplug all connectors, release the mounting standoffs/screws, and lift out the old board.
- Install — Seat the new board, reattach all harnesses exactly per your photo, and set any dip switches/jumpers to match the original.
- Test — Restore power and run a full heat cycle, watching the diagnostic LED for normal status.
Signs You Need a Replacement
- No response to thermostat heat calls
- Blank, dead, or continuously flashing fault LED
- Blower or inducer running erratically or not at all
- Intermittent no-heat that resets when power is cycled
Shipping & Returns
Ships same day on orders placed before 3 PM CST. 30-day hassle-free 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