ICP Furnace Control Board Kit for RGS300SFEA0AAAA – OEM Integrated Control | Ships Today

Overview

This is the genuine OEM control board kit, ICP part number 1183618, for ICP, Tempstar, and Heil gas furnaces. The integrated furnace control (IFC) is the brain of the furnace — it manages the ignition sequence, sequences the inducer, igniter, gas valve, and blower, monitors safety limits and the flame signal, and runs self-diagnostics via its onboard fault LED. Supplied as a complete kit, it includes the board and the mounting/wiring hardware needed for a clean swap. A failed board can cause no-heat conditions, erratic operation, blower problems, or repeated lockouts.

Specifications

Compatibility

Direct-fit OEM replacement for the ICP / Tempstar / Heil RGS300SFEA0AAAA furnace and other RGS-family models that originally shipped with kit 1183618. Confirm against your unit's parts breakdown before ordering.

Installation Guide

1. Safety First – Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter. Shut off the gas supply.
2. Access – Remove the control/blower compartment service panel.
3. Document – Photograph every wire and connector on the old board before disconnecting; note plug locations.
4. Remove – Unplug all harnesses and remove the board's mounting screws/standoffs, then lift out the old board.
5. Install – Mount the new board using the included hardware and reconnect each harness exactly per your photo.
6. Test – Restore gas and power, run a full heat cycle, and verify the diagnostic LED shows normal operation with no fault codes.

Signs You Need a Replacement

• No-heat condition with no response on a call for heat
• Diagnostic LED flashing a hard-fault or control-failure code
• Blower or inducer running erratically or not sequencing correctly
• Repeated lockouts not traced to the igniter, flame sensor, or gas valve

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.