ICP Furnace Control Board Kit for RGS090SRAA0AAA — OEM 1183618 | Ships Today

Overview

This genuine OEM furnace control board kit (part number 1183618) is the integrated ignition control for the ICP / Tempstar / Heil RGS090SRAA0AAA gas furnace. The board is the brain of the furnace — it manages the ignition sequence, sequences the inducer and blower, monitors the flame sensor and limit/pressure switches, and runs diagnostic LED fault codes. A failed control board produces erratic behavior: no ignition, blower that won't stop, intermittent lockouts, or a completely dead furnace. This OEM kit restores correct, safe control with all factory firmware and timing.

Specifications

Compatibility

Direct-fit replacement for the ICP RGS090SRAA0AAA and shared Tempstar/Heil/Comfortmaker furnaces using this integrated control board. Match the part number and connector layout to your existing board before ordering.

Installation Guide

1. Safety First — Disconnect furnace power and verify zero voltage with a multimeter.
2. Access — Remove the blower/control compartment service panel.
3. Document — Photograph every connector and wire position on the old board before disconnecting.
4. Remove — Unplug all harness connectors, remove the mounting screws, and lift out the old board.
5. Install — Mount the new board, transfer any jumpers/settings, and reconnect each harness per your photos.
6. Test — Restore power, run a full heat cycle, and confirm normal ignition, blower operation, and no fault codes.

Signs You Need a Replacement

• Furnace is completely dead with no diagnostic LED activity
• No ignition sequence despite a valid heat call
• Blower runs continuously or cycles erratically
• Repeated unexplained lockouts or fault codes pointing to the control

Shipping & Returns

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