ICP Furnace Control Board for RGS243SSAA0AAAA — OEM Kit 1183618 | Ships Today

Overview

This is the genuine OEM integrated furnace control board (kit part number 1183618) for the ICP / Tempstar / Heil RGS243SSAA0AAAA gas furnace. The control board is the brain of the furnace — it manages the ignition sequence, sequences the inducer and blower motors, monitors safety limits and flame sense, and times the heating cycle. When the board fails, the furnace may fail to ignite, short-cycle, blow cold air, or display flashing diagnostic LED fault codes. A failed board is one of the most common causes of a no-heat call.

Specifications

Compatibility

Engineered as a direct OEM replacement for the ICP RGS243SSAA0AAAA gas furnace and closely related RGS-series models built on the same control platform. Always confirm your existing board part number before ordering.

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 front service panel and locate the control board in the burner compartment.
3. Document — Photograph every wire and connector position before disconnecting anything.
4. Remove — Unplug all low- and line-voltage connectors, remove the mounting screws, and lift out the old board.
5. Install — Mount the new board, reconnect every connector exactly per your photo, and confirm the ground.
6. Test — Restore power and run a full heat cycle; confirm ignition, blower, and a steady status LED.

Signs You Need a Replacement

• Furnace will not ignite or start a heat cycle
• Flashing diagnostic LED fault codes on the board
• Blower or inducer runs erratically or not at all
• Intermittent no-heat calls that clear after a power reset

Shipping & Returns

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