ICP Furnace Control Board for RGS090STAB0AAA - OEM Kit 1183618 | Ships Today

Overview

This is the OEM integrated furnace control board kit (part number 1183618) for the ICP / Tempstar / Heil RGS090STAB0AAA gas furnace. The control board is the brain of the furnace, managing the ignition sequence, blower timing, inducer operation, flame sensing, and built-in safety lockouts. When this board fails, the furnace may fail to ignite, short-cycle, run the blower continuously, or throw fault codes on its diagnostic LED. Replacing it with the exact OEM kit restores proper sequencing and protects the rest of the system.

Specifications

Compatibility

Designed as a direct-fit replacement for the ICP / Tempstar / Heil RGS090STAB0AAA gas furnace. This is an OEM kit specified for this model family; always confirm your existing board part number against 1183618 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 blower compartment service panel.
3. Document - Photograph every wire and connector location on the existing board before disconnecting anything.
4. Remove - Label and unplug each harness, remove the mounting screws/standoffs, and lift out the old board.
5. Install - Mount the new 1183618 board, then reconnect each harness exactly per your photos.
6. Test - Restore power, initiate a heat call, and watch the diagnostic LED through a full ignition and blower cycle.

Signs You Need a Replacement

• Furnace will not ignite or has no response to a thermostat heat call
• Blower runs constantly or fails to start
• Repeated short-cycling or lockout fault codes on the board LED
• Visible burnt traces, scorch marks, or failed relays on the board

Shipping & Returns

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