ICP Control Board Kit for RGS243HSFA0AAAA — OEM Part 1183618 | Ships Today

Overview

This is the genuine OEM control board kit (part number 1183618) for the ICP / Tempstar / Heil RGS243HSFA0AAAA package unit. The integrated control board is the brain of the system — it manages the ignition sequence, monitors safety limits and pressure switches, sequences the inducer and blower, and coordinates the 24V signals between the thermostat and the unit's components. The kit ships with the necessary mounting hardware and connectors for a clean swap. When a board fails you may see no response to a call, blower or inducer problems, blinking diagnostic fault codes, or a unit stuck in lockout. A new OEM board restores full, code-correct operation.

Specifications

Compatibility

Designed for the ICP-family RGS243HSFA0AAAA and equivalent Tempstar, Heil, and Comfortmaker package units. Match the OEM kit number 1183618 and compare connector layout against your existing board before installing.

Installation Guide

1. Safety First — Disconnect power and verify zero voltage with a multimeter.
2. Access — Remove the control-compartment service panel.
3. Document — Photograph every harness connector and the board's diagnostic legend before disconnecting.
4. Remove — Unplug each connector, release the board standoffs, and remove the old board.
5. Install — Mount the new board on its standoffs and reseat every connector to its labeled position per your photo.
6. Test — Restore power, run a heat and cool call, and verify no fault codes flash.

Signs You Need a Replacement

• No response to a thermostat call
• Blinking or stored diagnostic fault codes
• Inducer or blower fails to sequence correctly
• Visible burn marks, corrosion, or a blown relay on the board

Shipping & Returns

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