ICP Furnace Control Board Kit for RGS240HSFA0AAAA — OEM Ignition Control | Ships Today

Overview

This is the OEM control board kit (OEM 1183618) for the ICP / Tempstar / Heil RGS240HSFA0AAAA. The integrated furnace control board is the brain of the unit — it sequences the inducer, hot surface igniter, gas valve, and blower, monitors the safety circuit (limits, pressure switch, flame sense), and manages timing and lockouts. Supplied as a kit with the mounting hardware and connectors needed for a direct replacement. When the board fails, symptoms range from no operation at all to erratic cycling, blower or inducer faults, and diagnostic LED error codes.

Specifications

Compatibility

Engineered for the ICP RGS240HSFA0AAAA and used across many ICP-family packaged and furnace platforms branded Tempstar, Heil, Comfortmaker, and Arcoaire. Match the OEM kit number and connector layout to your existing board before installing.

Installation Guide

1. Safety First — Disconnect power and verify zero voltage with a multimeter.
2. Access — Remove the control compartment panel.
3. Document — Photograph every harness and plug position before disconnecting.
4. Remove — Unplug each connector, release the standoffs/screws, and lift out the old board.
5. Install — Mount the new board with the supplied hardware and reconnect every plug exactly per your photo.
6. Test — Restore power and run a full heat and cool cycle, watching the diagnostic LED for normal operation.

Signs You Need a Replacement

• Unit completely dead with 24V present at the board
• Blower or inducer runs continuously or not at all
• Fault/error codes flashing on the board's diagnostic LED
• Burnt traces, scorched relays, or visible board damage

Shipping & Returns

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