ICP Furnace Control Board Kit for RGS243HFFA0AAAA | Ships Today

Overview

This OEM control board kit (part 1183618) is the integrated furnace control for the ICP / Tempstar / Heil RGS243HFFA0AAAA. The board is the brain of the furnace: it sequences the inducer, igniter, gas valve, and blower, monitors safety circuits and flame, and manages timing and diagnostics. A failed board produces erratic behavior — no ignition, no blower, blinking diagnostic LEDs, or a furnace that won't respond to the thermostat at all. This complete kit replaces the factory module and restores correct sequencing and safety operation. Record any diagnostic flash codes before replacing to confirm the board is the failed component.

Specifications

Compatibility

Built for the ICP RGS243HFFA0AAAA gas furnace and shared Tempstar, Heil, and Comfortmaker platforms using the same control kit. Confirm the original board part number before ordering.

Installation Guide

1. Safety First — Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter.
2. Access — Remove the control compartment service panel.
3. Document — Photograph every connector and wire harness on the old board before disconnecting.
4. Remove — Unplug each harness, release the mounting standoffs, and lift out the failed board.
5. Install — Mount the new board on the standoffs and reconnect each harness exactly per your photo.
6. Test — Restore power, run a full heat cycle, and confirm proper ignition, blower start, and no fault codes.

Signs You Need a Replacement

• Furnace unresponsive to thermostat calls
• No ignition or no blower despite good components
• Diagnostic LED flashing a control-fault code
• Random shutdowns or failure to sequence

Shipping & Returns

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