ICP Furnace Control Board Kit for RGX048KFCA0AAA — OEM Integrated Control | Ships Today

Overview

This OEM control board kit (part number 1183618) is the exact replacement integrated furnace control for the ICP Tempstar Heil RGX048KFCA0AAA. The control board is the brain of the furnace — it sequences the entire heating cycle, managing the inducer motor, hot surface igniter, gas valve, and blower while monitoring safety circuits such as the pressure switch, limit switch, and flame sensor. When the board fails, the furnace may not respond to the thermostat at all, may light intermittently, may run the blower continuously, or may flash diagnostic error codes via its onboard LED. Supplied as a complete kit, this control includes the mounting and wiring components needed for a clean OEM replacement. Always record any error codes and the existing wiring before swapping the board.

Specifications

Compatibility

Direct-fit OEM kit for the ICP Tempstar Heil RGX048KFCA0AAA. This integrated control platform is shared across many ICP-family gas furnaces; verify the connector layout and kit instructions against your unit before installing.

Installation Guide

1. Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter.
2. Access — Remove the blower compartment service panel.
3. Document — Photograph every connector and harness location before unplugging.
4. Remove — Unplug all connectors, remove the mounting screws, and lift out the old board.
5. Install — Mount the new board per the kit instructions and reconnect each harness exactly as photographed.
6. Test — Restore power and run a full heat cycle, confirming a normal LED status and proper sequencing.

Signs You Need a Replacement

• Furnace does not respond to the thermostat
• Blower runs continuously or won't start
• Diagnostic LED flashing a hard-fault code
• Intermittent or no ignition despite good igniter and gas valve

Shipping & Returns

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