ICP Furnace Control Board Kit for RGS090SFCB0AAA — OEM Replacement | Ships Today

Overview

This is the genuine OEM furnace control board kit (part #1183618) for the ICP (Tempstar / Heil) RGS090SFCB0AAA gas furnace. The control board is the brain of the furnace: it sequences the inducer motor, hot surface igniter, gas valve, and blower; monitors limit and pressure switches and flame sense; and runs the safety lockouts that shut the system down if ignition or airflow faults occur. When the board fails, the furnace may not respond to the thermostat, short-cycle, flash error codes, or stop firing entirely. This kit ships with the mounting hardware and instructions needed for a complete, factory-correct replacement.

Specifications

Compatibility

Designed for the ICP-family RGS090SFCB0AAA gas furnace and related Tempstar, Heil, Comfortmaker, and ICP models that use this control board. Confirm the board's part number and connector layout against your original before installing.

Installation Guide

1. Safety First — Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter.
2. Access — Remove the furnace control-compartment service panel.
3. Document — Photograph every connector and wire position on the old board before unplugging.
4. Remove — Unplug each harness, release the board standoffs or screws, and lift out the old board.
5. Install — Mount the new board, transfer each connector to the matching terminal per your photo, and set any DIP switches or jumpers to match the original.
6. Test — Restore power, run a full heat call, and confirm correct ignition sequence with no fault codes.

Signs You Need a Replacement

• Furnace unresponsive to thermostat calls
• Repeated fault/error flash codes on the board LED
• Short-cycling or blower running continuously
• No ignition sequence despite good igniter, valve, and switches

Shipping & Returns

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