ICP Furnace Control Board Kit for RGS150HEAA0AAAA — OEM 1183618 | Ships Today

Overview

This OEM control board kit (part 1183618) is the integrated furnace control (IFC) for the ICP / Tempstar / Heil RGS150HEAA0AAAA gas furnace. The board is the brain of the furnace — it sequences the inducer motor, hot surface igniter, gas valve, and blower, monitors safety switches and flame sense, and runs the diagnostic LED fault codes. When the IFC fails, the furnace may not respond to the thermostat, the blower may run continuously or not at all, or the unit may lock out with no obvious mechanical cause. The kit includes the board and the mounting/connector hardware needed for a clean swap.

Specifications

Compatibility

Built for the ICP RGS150HEAA0AAAA and related Tempstar, Heil, and Comfortmaker furnaces using the same control platform. Confirm your existing board part number and connector layout against 1183618 before ordering.

Installation Guide

1. Safety First — Disconnect power at the furnace switch or breaker and verify zero voltage with a multimeter.
2. Access — Remove the blower-compartment service panel to expose the control board.
3. Document — Photograph every wiring connector and harness location before disconnecting — this is the most important step.
4. Remove — Unplug each connector, remove the board mounting screws, and lift out the old IFC.
5. Install — Mount the new board, set any dip switches/jumpers to match the original, and reconnect each harness exactly per your photos.
6. Test — Restore power, run a full heat cycle, and confirm correct ignition, blower, and a steady diagnostic LED with no fault codes.

Signs You Need a Replacement

• Furnace unresponsive to thermostat calls
• Blower runs constantly or never starts
• Erratic operation or repeated lockouts with no mechanical fault
• Diagnostic LED dark or flashing a control-failure code

Shipping & Returns

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