ICP Furnace Control Board Kit for RGS300LTEA0AAAA — OEM 1183618 | Ships Today

Overview

This is the genuine OEM control board kit (part number 1183618) for the ICP Tempstar Heil RGS300LTEA0AAAA gas furnace. The integrated furnace control board is the brain of the appliance — it sequences the inducer, igniter, gas valve, and blower, monitors safety limits and the flame signal, and manages timing and diagnostics on every heating cycle. When the board fails you may see no response to a heat call, blower or inducer that will not run, erratic cycling, or repeated diagnostic fault flashes. This complete OEM kit restores proper ignition sequencing and safety control.

Specifications

Compatibility

Engineered for the ICP Tempstar Heil RGS300LTEA0AAAA furnace and matching RGS-series equipment that uses this control. Supplied as a complete kit, it serves as the OEM replacement across compatible ICP-family units — Tempstar, Heil, Comfortmaker, and Arcoaire. Match the kit number to 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 service panel to expose the control board.
3. Document — Photograph every harness connection and note any jumper or dip-switch settings before removing wires.
4. Remove — Unplug each connector, remove the mounting screws, and lift out the old board.
5. Install — Mount the new OEM board, transfer any settings, and reconnect every harness exactly as photographed.
6. Test — Restore power, call for heat, and confirm a full, correct ignition sequence with no fault codes.

Signs You Need a Replacement

• No response from the furnace on a heat call
• Blower or inducer motor will not energize
• Repeated diagnostic fault flashes or hard lockouts
• Visible burnt traces, scorched relays, or corrosion on the board

Shipping & Returns

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