ICP Control Board Kit for RGS150LSCB0AAAA — OEM 1183618 | Ships Today

Overview

This OEM control board kit (part number 1183618) is the integrated furnace control (IFC) for the ICP / Tempstar / Heil RGS150LSCB0AAAA gas furnace. The control board is the brain of the unit — 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 light, locks out on an error code, or cycles erratically. Replacing it with the correct OEM kit restores reliable, safe operation without guesswork.

Specifications

Compatibility

Engineered as the factory replacement for the ICP / Tempstar / Heil RGS150LSCB0AAAA furnace. Always confirm the part number printed on your existing board matches 1183618 before installing, as control boards are model-specific.

Installation Guide

1. Safety First — Disconnect power at the furnace switch and breaker; verify zero voltage with a multimeter.
2. Access — Remove the furnace front service panel.
3. Document — Photograph every wire and connector landing on the old board before disconnecting.
4. Remove — Label and unplug each harness, then remove the mounting screws and lift out the failed board.
5. Install — Mount the new board on the same standoffs and reconnect every harness exactly per your photo.
6. Test — Restore power and verify a full ignition cycle: inducer, igniter, flame, and blower.

Signs You Need a Replacement

• Furnace will not start or shows a hard lockout error code.
• Inducer or blower motor fails to energize on a call for heat.
• Visible burn marks, corrosion, or cracked traces on the board.
• Intermittent operation that follows no consistent pattern.

Shipping & Returns

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