ICP Furnace Control Board Kit for RGS240LRFA0AAAA — 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 RGS240LRFA0AAAA gas furnace. The board manages the entire heating sequence — it powers the inducer motor, sequences the hot surface igniter, opens the gas valve, monitors flame, and controls the blower motor timing. It also runs onboard safety logic and diagnostic fault codes via an LED. When this board fails, the furnace typically will not start, lockouts occur, the blower runs continuously, or you get erratic short-cycling. Replacing the control board with a genuine OEM unit restores correct ignition timing and safety operation.

Specifications

Compatibility

Designed as a direct-fit replacement for the ICP / Tempstar / Heil RGS240LRFA0AAAA gas furnace. Always 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 and connector position on the existing board before disconnecting.
4. Remove — Unplug all wire harnesses and pin connectors, remove the mounting screws, and lift out the old control board.
5. Install — Mount the new board, reconnect each harness exactly per your photo, and verify the jumper/dip settings match.
6. Test — Restore power and run a full heat cycle; confirm ignition, flame sense, and blower operation with no fault codes.

Signs You Need a Replacement

• Furnace will not ignite or repeatedly goes into lockout.
• Blower motor runs constantly or never engages.
• Flashing or no diagnostic LED on the board.
• Visible burn marks, corrosion, or cracked solder traces on the board.

Shipping & Returns

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