ICP Furnace Control Board Kit for RGS240LREA0AAAA — OEM 1183618 | Ships Today

Overview

This OEM furnace control board kit (part number 1183618) is the integrated ignition control module for the ICP / Tempstar / Heil RGS240LREA0AAAA gas furnace. The board orchestrates the full heating sequence — energizing the inducer, sequencing the hot surface igniter, opening the gas valve, proving flame, and timing the blower on and off. It also enforces safety lockouts and reports diagnostic fault codes through an onboard LED. A failed board commonly causes a no-start furnace, repeated lockouts, a continuously running blower, or erratic short-cycling. Installing a genuine OEM replacement restores correct sequence-of-operation and safety control.

Specifications

Compatibility

Direct-fit replacement for the ICP / Tempstar / Heil RGS240LREA0AAAA gas furnace. Confirm the part number printed on your existing board matches 1183618 before installing.

Installation Guide

1. Safety First — Disconnect power at the furnace switch and breaker; verify zero voltage with a multimeter.
2. Access — Remove the furnace blower-compartment service panel.
3. Document — Photograph every wire harness and connector position before disconnecting.
4. Remove — Unplug all harnesses and pin connectors, remove the mounting screws, and lift out the old board.
5. Install — Mount the new board, reconnect each harness exactly per your photo, and match any jumper/dip settings.
6. Test — Restore power and run a full heat cycle; confirm ignition, flame sense, and blower timing with no fault codes.

Signs You Need a Replacement

• Furnace will not ignite or repeatedly trips into lockout.
• Blower runs continuously or never starts.
• No diagnostic LED or a steady fault-code flash.
• Burn marks, corrosion, or cracked traces visible on the board.

Shipping & Returns

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