ICP Furnace Control Board Kit for RGS120HTAA0AAA — OEM Integrated Control | Ships Today

Overview

This is the genuine OEM Control Board Kit (part number 1183618) for the ICP / Tempstar / Heil RGS120HTAA0AAA gas furnace. The integrated furnace control board is the brain of the system: it sequences the ignition cycle, energizes the inducer and igniter, opens the gas valve, monitors flame sense and safety limits, and controls blower timing on heat and cool. When the board fails, the furnace may not respond to the thermostat, lock out on safeties, run the blower continuously, or fail to ignite at all. This OEM kit is a direct replacement that restores the full factory ignition and safety sequence.

Specifications

Compatibility

Direct-fit replacement kit for the ICP / Tempstar / Heil RGS120HTAA0AAA and other ICP-family furnaces specifying this control. Match the OEM part number on your existing board before installing.

Installation Guide

1. Safety First — Disconnect power and shut off the gas. Verify zero voltage with a multimeter.
2. Access — Remove the furnace control / blower panel to expose the board.
3. Document — Photograph every wire and connector position before disconnecting; note thermostat and limit leads.
4. Remove — Unplug the harnesses, remove the mounting screws, and take out the old board.
5. Install — Mount the new board, transfer any jumpers/settings, and reconnect each connector per your photo.
6. Test — Restore gas and power, run a full heat cycle, and verify proper ignition, flame sense, and blower timing.

Signs You Need a Replacement

• Furnace does not respond to thermostat calls
• Repeated safety lockouts or error/flash codes on the board
• Blower runs constantly or fails to start
• No ignition sequence despite power to the furnace

Shipping & Returns

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