ICP Furnace Control Board Kit for RGS120SFBA0AAA — OEM 1183618 | Ships Today

Overview

This OEM control board kit (part number 1183618) is the integrated furnace control (IFC) — the brain of ICP, Tempstar, and Heil gas furnaces. It sequences the entire heat cycle: it reads the thermostat call, runs the inducer and proves the pressure switch, energizes the hot surface igniter, opens the gas valve, monitors flame via the sensor, and times blower on/off delays. It also enforces safety lockouts. When the board fails, you can see no response to a heat call, blower that won't start or won't stop, error codes flashing on the diagnostic LED, or intermittent no-heat faults. This kit is a direct-fit OEM replacement for model RGS120SFBA0AAA.

Specifications

Compatibility

Engineered for the ICP / Tempstar / Heil RGS120SFBA0AAA furnace and platform models using this integrated furnace control. Match the part number and connector layout to your existing board before ordering.

Installation Guide

1. Safety First — Shut off gas and disconnect power. Verify zero voltage with a multimeter.
2. Access — Remove the furnace control/blower compartment panel.
3. Document — Photograph every connector and wire location before disconnecting.
4. Remove — Unplug each harness, release the board standoffs, and lift out the old control.
5. Install — Mount the new board, transfer any jumper/DIP settings, and reconnect each harness to the matching terminal per your photo.
6. Test — Restore gas and power, run a full heat cycle, and confirm proper ignition, flame sensing, and blower timing with no fault codes.

Signs You Need a Replacement

• No response to a thermostat heat call.
• Blower won't start or runs continuously.
• Fault/error codes flashing on the board LED.
• Intermittent ignition or random safety lockouts.

Shipping & Returns

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