ICP Furnace Control Board Kit for RGS240HFAA0AAAA — OEM | Ships Today

Overview

This genuine OEM control board kit (1183618) is the integrated furnace control (IFC) brain of your ICP / Tempstar / Heil RGS240HFAA0AAAA gas furnace. It manages the entire heating sequence — inducer operation, igniter timing, gas valve activation, flame sensing, blower on/off delays, and safety lockouts. Supplied as a complete kit with the hardware needed for a clean swap. When the board fails, you'll see no response to thermostat calls, blowers that won't start or won't stop, repeated lockouts, or error/flash codes on the board's diagnostic LED. A new control board restores correct sequencing and protects every component it drives.

Specifications

Compatibility

Designed for the ICP/Tempstar/Heil RGS240HFAA0AAAA and related RGS-series furnaces. Confirm the OEM number on your existing board before ordering to ensure the kit matches.

Installation Guide

1. Safety First — Disconnect power at the furnace switch and breaker; verify zero voltage with a multimeter.
2. Access — Remove the control/blower compartment panel.
3. Document — Photograph every plug and terminal on the old board before disconnecting.
4. Remove — Unplug each connector, release the standoffs/screws, and lift out the failed board.
5. Install — Mount the new board from the kit and reconnect every harness exactly as photographed.
6. Test — Restore power, run a full heat cycle, and confirm igniter, gas valve, and blower sequence correctly with no fault codes.

Signs You Need a Replacement

• Furnace unresponsive to thermostat heat calls
• Blower runs constantly or fails to start
• Repeated ignition lockouts or error flash codes on the board LED
• Visible burn marks, corrosion, or damaged relays on the board

Shipping & Returns

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