ICP Furnace Control Board Kit for RGS180LTCA0AAAA — OEM 1183618 | Ships Today

Overview

This OEM control board kit (part number 1183618) is the factory-specified integrated furnace control (IFC) for the ICP / Tempstar / Heil RGS180LTCA0AAAA gas furnace. The control board is the brain of the furnace — it sequences the inducer, igniter, gas valve, and blower, monitors the safety circuit, and flashes diagnostic fault codes. Because it manages line and low-voltage circuits and endures constant thermal cycling, a failed board can cause anything from intermittent no-heat to a furnace that won't respond at all.

Specifications

Compatibility

Direct OEM replacement kit for the ICP / Tempstar / Heil RGS180LTCA0AAAA furnace. Control boards are model-specific — verify the OEM part number 1183618 and the connector layout against your existing board before installing.

Installation Guide

1. Safety First — Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter.
2. Access — Remove the furnace control/blower service panel.
3. Document — Photograph every harness plug and terminal, and note any DIP-switch or jumper settings before disconnecting.
4. Remove — Unplug each connector, remove the board mounting screws, and lift the old board off its standoffs.
5. Install — Mount the new board, transfer any jumpers/DIP settings, and reconnect each harness to the matching plug per your photo.
6. Test — Restore power, call for heat, and confirm a full ignition sequence with a normal status LED and no fault codes.

Signs You Need a Replacement

• No response from the furnace — inducer, igniter, and blower all stay dead on a heat call
• Status LED off, or flashing a hard-fault / internal-control code
• Intermittent operation, random lockouts, or relays that won't energize
• Visible burn marks, corrosion, or a cracked board / failed relay

Shipping & Returns

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