ICP Control Board Kit for RGS243HREA0AAAA — OEM Furnace Board | Ships Today

Overview

This OEM control board kit (part 1183618) is the brain of the ICP RGS243HREA0AAAA, managing the entire heating and blower sequence. It reads the thermostat call, sequences the inducer, energizes the igniter, opens the gas valve, monitors flame and safety switches, and controls blower timing. When the board fails, the symptoms can mimic almost any other component — no ignition, no blower, intermittent operation, or repeated lockouts with no clear cause. Burnt relays, scorched traces, blown onboard fuses, and dead diagnostic LEDs all point to a board at the end of its life. This factory kit includes the board and the hardware needed for a clean direct replacement, restoring correct sequencing and safety monitoring.

Specifications

Compatibility

Direct-fit OEM replacement kit for the ICP/Tempstar/Heil RGS243HREA0AAAA and related RGS243 series units using the factory integrated control board.

Installation Guide

1. Safety First — Disconnect power and shut off the gas; verify zero voltage with a multimeter.
2. Access — Remove the control compartment panel.
3. Document — Photograph every wire harness and connector before disconnecting.
4. Remove — Unplug each connector, remove the mounting screws, and lift out the old board.
5. Install — Mount the new board and transfer each harness to its matching terminal per your photos.
6. Test — Restore gas and power, then confirm a full heat cycle and correct blower operation; check the diagnostic LED for fault codes.

Signs You Need a Replacement

• No response to the thermostat with power present
• Burnt relays, scorched traces, or a blown onboard fuse
• Intermittent operation or random lockouts
• Diagnostic LED dark or flashing a hard-fault code

Shipping & Returns

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