ICP Furnace Control Board Kit for RGS240HRFA0AAAA — Ships Today

Overview

This OEM control board kit (part 1183618) is the integrated furnace control (IFC) brain of your ICP / Tempstar / Heil RGS240HRFA0AAAA gas furnace. It manages the entire heat cycle: it reads the thermostat call, sequences the inducer, energizes the hot surface igniter, opens the gas valve, monitors flame sense and safety limits, and times the blower on and off. When the board fails, the furnace may be completely dead, stuck in lockout, short-cycling, or running the blower continuously. A blinking diagnostic LED fault code, burnt or corroded relays on the board, and a furnace that ignores the thermostat are the classic symptoms. This kit ships with the mounting hardware and connectors needed for a clean OEM replacement that restores full, code-compliant operation.

Specifications

Compatibility

OEM kit for the ICP RGS240HRFA0AAAA furnace and related Tempstar, Heil, Comfortmaker, and Arcoaire RGS-series furnaces using the same integrated control. Confirm the part number printed on your existing board before ordering.

Installation Guide

1. Safety First — Disconnect power at the furnace switch and breaker, verify zero voltage with a multimeter.
2. Access — Remove the furnace control/blower compartment service panel.
3. Document — Photograph every harness plug and terminal on the old board before disconnecting.
4. Remove — Unplug all connectors, release the board standoffs/screws, and lift the old board out.
5. Install — Mount the new board and transfer each connector exactly per your photo.
6. Test — Restore power, run a full heat cycle, and confirm the diagnostic LED shows normal operation.

Signs You Need a Replacement

• Furnace completely dead or stuck in hard lockout.
• Diagnostic LED flashing a fault / error code.
• Blower runs constantly or won't start at all.
• Burnt, corroded, or clicking relays on the board.

Shipping & Returns

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