ICP Furnace Control Board for RGS240LTAA0AAAA — OEM Kit 1183618 | Ships Today

Overview

This OEM integrated furnace control board (kit part number 1183618) governs the ignition sequence, blower and inducer timing, gas valve actuation, flame sensing, and safety lockouts on the ICP/Tempstar/Heil RGS240LTAA0AAAA gas furnace. A failed board can leave the furnace dead, cause repeated ignition lockouts, run the blower continuously, or trigger diagnostic flash codes. Because it manages every safety circuit on the appliance, replace a failed board with a genuine OEM kit rather than a generic substitute.

Specifications

Compatibility

Direct-fit replacement for the ICP RGS240LTAA0AAAA furnace and closely related Tempstar/Heil/Comfortmaker models sharing this control platform. Confirm your existing board part number before ordering.

Installation Guide

1. Safety First — Disconnect power at the furnace switch and breaker; verify zero voltage with a multimeter.
2. Access — Remove the blower compartment service panel.
3. Document — Photograph every wire and connector position before disconnecting.
4. Remove — Unplug the molex harnesses and spade terminals, then unscrew the old board from its standoffs.
5. Install — Mount the new board and reconnect each harness exactly per your photos.
6. Test — Restore power and run a full heat cycle; confirm ignition, blower, and no fault codes.

Signs You Need a Replacement

• Furnace is completely unresponsive with no diagnostic LED
• Repeated ignition lockouts or erratic flash/error codes
• Blower or inducer motor runs constantly or not at all
• Visible burn marks, corrosion, or cracked relays on the board

Shipping & Returns

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