ICP Furnace Control Board Kit for RGS120SRCA0AAA — OEM 1183618 | Ships Today

Overview

This is the genuine OEM control board kit (part number 1183618) for the ICP / Tempstar / Heil RGS120SRCA0AAA gas furnace. The integrated furnace control (IFC) board is the brain of the furnace — it manages the ignition sequence, blower and inducer timing, safety lockouts, and communication between the thermostat and the gas valve. When this board fails, the furnace may fail to ignite, short-cycle, run the blower continuously, or flash a diagnostic fault code. The kit ships with the board and the mounting hardware needed for a direct replacement.

Specifications

Compatibility

Engineered as a direct-fit replacement for the ICP Tempstar Heil RGS120SRCA0AAA gas furnace and shared-platform models within the same family. Always match your existing board's part number and connector layout 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 compartment door.
3. Document — Photograph every wire and connector on the old board before disconnecting.
4. Remove — Unplug each harness, release the board standoffs/screws, and lift out the old control.
5. Install — Mount the new board, then reconnect each harness exactly per your photo.
6. Test — Restore power and run a full heat cycle; confirm ignition, blower, and no fault codes.

Signs You Need a Replacement

• Furnace will not start or has no response from the thermostat
• Blower or inducer runs constantly or at the wrong times
• Flashing diagnostic LED fault code on the board
• Visible burnt traces, scorching, or a cracked relay on the board

Shipping & Returns

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