ICP Furnace Control Board Kit for RGS120LSCB0AAA — OEM Replacement | Ships Today

Overview

This genuine OEM control board kit (part number 1183618) is the integrated furnace control for the ICP Tempstar Heil RGS120LSCB0AAA. The board is the brain of the furnace: it sequences the inducer, igniter, gas valve, and blower, monitors safety inputs like the pressure switch and limit, and runs the diagnostic LED fault codes. When a control board fails — from power surges, corrosion, failed relays, or burned traces — the furnace may not respond to the thermostat, may lock out, or may behave erratically. This OEM kit restores correct ignition sequencing and safety supervision.

Specifications

Compatibility

Built for the ICP Tempstar Heil RGS120LSCB0AAA and platform-matched furnaces specifying control board kit 1183618. Match the board part number, connector layout, and any included jumpers/instructions to your existing control before installing.

Installation Guide

1. Safety First — Disconnect electrical power and shut off the gas. Verify zero voltage with a multimeter.
2. Access — Remove the furnace control/service panel.
3. Document — Photograph every plug and wire location on the old board before disconnecting.
4. Remove — Unplug all connectors, remove the mounting screws/standoffs, and lift out the old board.
5. Install — Mount the new board, transfer each connector to the identical terminal per your photo, and set any jumpers to match.
6. Test — Restore power and gas, run a heat call, and confirm a full normal sequence with no fault codes.

Signs You Need a Replacement

• Furnace completely unresponsive to the thermostat
• No ignition sequence or stuck/erratic blower operation
• Repeated lockouts or abnormal LED fault codes
• Visible burned traces, corrosion, or failed relays on the board

Shipping & Returns

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