ICP Furnace Control Board Kit for RGS243HSAA0AAAA — OEM Integrated Control | Ships Today

Overview

OEM control board kit (part 1183618) for the ICP / Heil / Tempstar RGS243HSAA0AAAA gas furnace. The integrated furnace control board is the brain of the system — it manages the ignition sequence, inducer and blower timing, safety interlocks, and diagnostic fault codes. When the board fails, the furnace may be completely dead, ignore thermostat calls, run the blower nonstop, or flash error codes with no heat. This kit includes the factory board for a precise, fully compatible replacement that restores correct sequencing and safety operation.

Specifications

Compatibility

Built for the ICP-manufactured RGS243HSAA0AAAA and shared across compatible Heil, Tempstar, and Comfortmaker gas furnaces using the same integrated control. Match the stamped part number on your existing board before ordering.

Installation Guide

1. Safety First — Disconnect power and shut off the gas supply; verify zero voltage with a multimeter.
2. Access — Remove the furnace control-compartment service panel.
3. Document — Photograph every wire harness and terminal on the old board before disconnecting.
4. Remove — Unplug each connector, unfasten the board standoffs, and lift the old board out.
5. Install — Mount the new board and reconnect every harness to its matching terminal per your photo.
6. Test — Restore gas and power, run a full heat cycle, and confirm proper sequencing with no fault codes.

Signs You Need a Replacement

• Furnace is completely unresponsive to thermostat calls.
• Blower or inducer runs continuously or won't start.
• Repeated ignition lockouts or flashing diagnostic fault codes.
• Visible burnt traces, scorched relays, or a blown onboard fuse.

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. National HVAC Parts fitment guarantee on every OEM order.