ICP Furnace Control Board Kit for RGS300SFAA0AAAA — OEM 1183618 | Ships Today
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Overview
This is a genuine OEM furnace control board kit, ICP part number 1183618, for ICP, Tempstar, and Heil gas furnaces. The integrated control board is the brain of the furnace — it manages the ignition sequence, monitors safety circuits and limit switches, sequences the inducer, igniter, gas valve, and blower, and runs the self-diagnostic flash codes. A failed board produces symptoms ranging from a completely dead furnace to erratic blower operation, no ignition, or repeated lockouts. Because the board ties together every major component, it is typically diagnosed after confirming that sensors, limits, and the igniter test good. This kit includes the board and the mounting/wiring hardware needed for a clean OEM replacement.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Type | Integrated Furnace Control Board Kit |
| Brand | ICP (Tempstar / Heil) |
| Application | Gas Furnace Control |
| Fitment | OEM Direct Replacement |
Compatibility
Direct-fit OEM replacement kit for ICP-family furnaces including model RGS300SFAA0AAAA and related Tempstar and Heil units originally supplied with part 1183618. Confirm the board layout and connector configuration against your existing control before ordering.
Installation Guide
- Safety First — Disconnect power at the switch and breaker, then verify zero voltage with a multimeter.
- Access — Remove the blower or control compartment service panel.
- Document — Photograph every connector and wire on the existing board before disconnecting.
- Remove — Unplug each harness, release the board standoffs or screws, and lift out the old board.
- Install — Mount the new board from the kit and reconnect each harness to the matching connector per your photo.
- Test — Restore power and confirm a full, clean ignition-to-blower sequence with no fault flash codes.
Signs You Need a Replacement
- Furnace completely dead with no diagnostic LED
- No ignition sequence despite a valid call for heat
- Erratic blower or inducer behavior, or random lockouts
- Visible scorching, burnt traces, or corroded connectors 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