ICP Control Board Kit for RGS180SDCA0AAAA Furnace — OEM 1183618 | Ships Today

Overview

This is the genuine OEM control board kit (part number 1183618) for the ICP / Tempstar / Heil RGS180SDCA0AAAA gas furnace. The integrated furnace control board manages the ignition sequence, blower timing, gas valve operation, safety lockouts, and communication between the thermostat and furnace components. When this board fails, the furnace may fail to ignite, short-cycle, run the blower continuously, or display diagnostic fault codes via its onboard LED. Replacing it with the correct OEM kit restores reliable, code-compliant operation.

Specifications

Compatibility

Engineered for the ICP-family RGS180SDCA0AAAA gas furnace sold under the Tempstar, Heil, Comfortmaker, and related ICP brands. Always confirm your existing board's part number before ordering, as ICP uses several control board variants across model revisions.

Installation Guide

1. Safety First — Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter.
2. Access — Remove the furnace blower-compartment service panel.
3. Document — Photograph every wire and connector on the existing board before disconnecting anything.
4. Remove — Unplug the wiring harnesses, remove the mounting screws, and lift out the old control board.
5. Install — Mount the new 1183618 board, then reconnect every harness exactly as photographed.
6. Test — Restore power, run a heat cycle, and confirm proper ignition, blower timing, and absence of fault codes.

Signs You Need a Replacement

• Furnace will not start or fails to ignite despite a call for heat.
• Blower runs continuously or never starts.
• Diagnostic LED flashing a hard-lockout or board fault code.
• Visible burn marks, swollen capacitors, or scorched traces on the old board.

Shipping & Returns

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