ICP Furnace Control Board Kit for RGS091LRCB0AAA — OEM 1183618 | Ships Today

Overview

This is the genuine OEM integrated furnace control board kit (part number 1183618) for the ICP / Tempstar / Heil model RGS091LRCB0AAA gas furnace. The control board is the brain of the furnace: it manages the ignition sequence, monitors the flame sensor and pressure switches, sequences the inducer and blower motors, and runs continuous safety diagnostics. When this board fails, the furnace typically will not start, locks out on a fault code, short-cycles, or runs the blower continuously. Because this is a complete kit, it ships with the replacement board and the mounting hardware needed for a clean swap.

Specifications

Compatibility

Engineered as a direct OEM fit for the ICP-family model RGS091LRCB0AAA, which is sold under the ICP, Tempstar, and Heil badges. Always confirm your existing board part number and connector layout against 1183618 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 blower compartment service panel.
3. Document — Photograph every wire and connector on the existing board before disconnecting anything.
4. Remove — Unplug each harness, release the standoffs or mounting screws, and lift out the old board.
5. Install — Mount the new 1183618 board with the included hardware and reconnect every harness exactly as photographed.
6. Test — Restore power and run a full heat cycle, watching the diagnostic LED for normal operation.

Signs You Need a Replacement

• Furnace is completely dead with no diagnostic LED activity
• Repeated lockouts or error codes that clear after a power reset
• Blower or inducer runs constantly or fails to start
• Visible scorching, corrosion, or cracked solder joints on the board

Shipping & Returns

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