ICP Furnace Control Board for RGS240LDFA0AAAA — OEM Kit 1183618 | Ships Today

Overview

The OEM control board kit (part #1183618) is the integrated furnace control (IFC) for the ICP Tempstar Heil RGS240LDFA0AAAA gas furnace. This board manages the entire heating sequence — it powers the inducer, monitors the pressure switch, energizes the hot surface igniter, opens the gas valve, controls blower timing, and runs continuous flame supervision and safety lockouts. When the control board fails, the furnace typically won't start, locks out after ignition attempts, runs the blower continuously, or stops responding to the thermostat. Replacing it with this genuine OEM kit restores reliable, code-compliant operation.

Specifications

Compatibility

This control board kit is a direct-fit replacement for the ICP, Tempstar, Heil, Comfortmaker, and Arcoaire-family furnace model RGS240LDFA0AAAA. Always match your existing board layout and connector configuration 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 on the existing board before disconnecting anything.
4. Remove — Label and unplug each connector, remove the mounting screws/standoffs, and lift out the old control board.
5. Install — Mount the new board, then reconnect every harness exactly per your photo.
6. Test — Restore power and run a full heat cycle; confirm inducer, igniter, gas valve, and blower sequence correctly with no fault codes.

Signs You Need a Replacement

• Furnace completely unresponsive to the thermostat
• Repeated ignition lockout or flashing fault/diagnostic LED
• Blower runs continuously or never starts
• Visible burn marks, corrosion, or a cracked board/relay

Shipping & Returns

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