ICP Integrated Furnace Control Board for RGS120HEBA0AAA — OEM Kit 1183618 | Ships Today

Overview

This OEM Integrated Furnace Control (IFC) board — sold as kit part number 1183618 — is the electronic brain of your ICP/Heil/Tempstar RGS120HEBA0AAA gas furnace. It manages the ignition sequence, blower timing, safety lockouts, and 24V signaling between the thermostat, gas valve, igniter, inducer motor, and limit switches. A failed control board typically shows up as a furnace that will not start, short-cycles, runs the blower continuously, or displays diagnostic LED fault codes. Because the board coordinates every stage of the heating cycle, a marginal board can also cause intermittent no-heat calls that are hard to trace.

Specifications

Compatibility

Engineered as a direct OEM replacement for the ICP/Heil/Tempstar/Comfortmaker RGS120HEBA0AAA gas furnace. The RGS120 series shares this control platform across several family-brand variants. 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; verify zero voltage with a multimeter. Shut off the gas supply.
2. Access — Remove the furnace blower/control compartment service panel.
3. Document — Photograph every wire and connector on the old board before disconnecting anything.
4. Remove — Unplug each harness, then remove the mounting screws/standoffs holding the board.
5. Install — Seat the new board on the standoffs and reconnect every harness exactly per your photos.
6. Test — Restore gas and power, initiate a heat call, and confirm a full ignition cycle with no fault codes.

Signs You Need a Replacement

• Furnace will not ignite or fails to respond to a thermostat call
• Blower runs continuously or short-cycles
• Flashing LED diagnostic / lockout fault codes
• Intermittent no-heat that returns after a power reset

Shipping & Returns

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