ICP Furnace Control Board Kit for RGS091HSCA0AAA — OEM 1183618 | Ships Today

Overview

This OEM furnace control board kit (part number 1183618) is the integrated brain of your ICP Tempstar/Heil RGS091HSCA0AAA gas furnace. It manages the ignition sequence, blower and inducer timing, safety lockouts, and communication between the thermostat, gas valve, and limit switches. When the board fails you may see no ignition, the furnace short-cycling, the blower running continuously, or a blinking diagnostic LED with no heat call response. This 24V control board ships as a complete kit so the failed assembly can be swapped without hunting for separate components.

Specifications

Compatibility

Engineered as a direct OEM replacement for the ICP Tempstar Heil RGS091HSCA0AAA gas furnace. ICP-family equipment (Tempstar, Heil, Comfortmaker) shares many control platforms — always verify the printed part number 1183618 against the board currently installed.

Installation Guide

1. Safety First — Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter before touching the board.
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 — Unplug the low-voltage and line-voltage harnesses, release the board standoffs/screws, and lift out the old board.
5. Install — Mount the new 1183618 board, then reconnect every harness exactly per your photo.
6. Test — Restore power, initiate a heat call, and confirm the full ignition-to-blower sequence and a steady diagnostic LED.

Signs You Need a Replacement

• No response to a thermostat heat call despite power present
• Blower or inducer runs continuously or won't start
• Furnace short-cycles or locks out repeatedly
• Diagnostic LED flashes a fault code or stays dark

Shipping & Returns

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