ICP Furnace Control Board Kit for RGS243HTAA0AAAA — OEM Ignition Board | Ships Today

Overview

This is the OEM control board kit (part 1183618) for the ICP / Tempstar / Heil RGS243HTAA0AAAA unit. The integrated control board is the brain of the system — it manages the ignition sequence, sequences the inducer, igniter, gas valve, and blower, monitors safety switches and flame, and times the heat/fan cycles. When the board fails you may see no response on a call for heat, blinking diagnostic LED fault codes, an inducer or blower that won't start, or intermittent lockouts that come and go with temperature and vibration. This kit includes the replacement board and the hardware needed to drop it into the original location and restore full sequence control.

Specifications

Compatibility

Designed for the ICP RGS243HTAA0AAAA model and ICP-family gas/electric units using this control platform. Match the connector layout and board part number to your existing board before ordering.

Installation Guide

1. Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter.
2. Access — Remove the control/service panel to reach the board.
3. Document — Photograph every harness connector and note the LED fault code before removing the board.
4. Remove — Unplug each connector and unscrew the old board from its standoffs.
5. Install — Mount the new board and reconnect each harness exactly per your photo; do not force connectors.
6. Test — Restore power, run a full heat cycle, and confirm proper sequencing with no fault codes.

Signs You Need a Replacement

• No response on a call for heat
• Blinking diagnostic LED fault codes
• Inducer or blower fails to start or runs erratically
• Intermittent lockouts that change with vibration or temperature

Shipping & Returns

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