ICP Furnace Control Board Kit for RGS240SFFA0AAAA — OEM 1183618 | Ships Today

Overview

This ICP control board kit (OEM part #1183618) is the integrated furnace control (IFC) that manages your ICP/Heil/Tempstar RGS240SFFA0AAAA gas furnace. The board sequences the inducer, igniter, gas valve, and blower, monitors flame and pressure safeties, and stores diagnostic fault codes. When the board fails you may see a furnace that won't start, a blower that runs continuously, no response to the thermostat, or an LED flashing a hard fault. Replacing the control board restores proper ignition timing, safety supervision, and reliable heating operation.

Specifications

Compatibility

This control board kit is a direct OEM fit for the ICP/Heil/Tempstar RGS240SFFA0AAAA gas furnace and other RGS-series models that specify part 1183618. Confirm the board part number printed on your existing control before ordering, as furnace boards are model-specific.

Installation Guide

1. Safety First — Disconnect electrical 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 on the existing board, or transfer one wire at a time to avoid mistakes.
4. Remove — Unplug the harness connectors, remove the mounting screws, and lift out the failed board.
5. Install — Mount the new board, set any required jumpers/DIP switches to match the original, and reconnect each wire per your photo.
6. Test — Restore power, run a full heat cycle, and confirm correct inducer, ignition, gas, and blower sequencing with no fault codes.

Signs You Need a Replacement

• Furnace completely unresponsive to thermostat calls
• Blower runs constantly or fails to start
• Erratic ignition sequencing or random lockouts
• Diagnostic LED dark, stuck on, or flashing a board/hard fault

Shipping & Returns

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