ICP Control Board Kit for RGS243HRFA0AAAA – OEM Integrated Furnace Control | Ships Today

Overview

This is the genuine OEM control board kit (part 1183618) for the ICP / Tempstar / Heil RGS243HRFA0AAAA gas furnace. The integrated furnace control board is the brain of the furnace, managing the ignition sequence, blower and inducer timing, safety lockouts, and communication with the thermostat. When the board fails you may see no response on a heat call, blower or inducer that will not start or stop, flashing diagnostic LED fault codes, or erratic short-cycling. The kit includes the replacement board and mounting hardware needed to restore full furnace operation.

Specifications

Compatibility

Built for the ICP RGS243HRFA0AAAA furnace and shared Tempstar, Heil, Comfortmaker, and Day & Night gas furnace platforms that use this control kit. Confirm the part number on your existing board and the diagnostic LED layout before ordering.

Installation Guide

1. Safety First – Disconnect power and verify zero voltage with a multimeter.
2. Access – Remove the furnace control compartment service panel.
3. Document – Photograph every plug, terminal, and harness connection before disconnecting.
4. Remove – Unplug each connector and unscrew the old board from its standoffs.
5. Install – Mount the new board on the standoffs and reconnect each harness to the matching terminal per your photos.
6. Test – Restore power and confirm a complete, fault-free heating cycle.

Signs You Need a Replacement

• No response from the furnace on a call for heat
• Blower or inducer motor will not start or will not shut off
• Flashing diagnostic LED fault or lockout codes
• Erratic short-cycling or intermittent operation

Shipping & Returns

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