ICP Control Board Kit for RGS303HDEA0AAAA — OEM Furnace Board | Ships Today

Overview

This OEM control board kit (part 1183618) is the factory replacement integrated control for ICP / Heil / Tempstar model RGS303HDEA0AAAA. The control board is the brain of the furnace: it sequences the ignition cycle, monitors safety inputs from the pressure switch and limit, times the inducer and blower, and manages the igniter and gas valve. When the board fails you may see no response to a thermostat call, blower or inducer that won't start, erratic cycling, or flashing diagnostic fault codes. Supplied as a kit for straightforward replacement, this OEM board restores correct ignition sequencing and full safety monitoring.

Specifications

Compatibility

Designed for ICP / Heil / Tempstar model RGS303HDEA0AAAA and platform-shared furnaces using this control. Verify the board layout, connector positions, and any dip-switch or jumper settings match your original before installing.

Installation Guide

1. Safety First — Disconnect power and shut off gas; verify zero voltage with a multimeter.
2. Access — Remove the control/blower compartment service panel.
3. Document — Photograph every harness connection and note original jumper/dip-switch settings before unplugging.
4. Remove — Unplug each connector, release the board standoffs or screws, and lift out the failed board.
5. Install — Mount the new OEM board, transfer any settings, and reconnect each harness per your photo.
6. Test — Restore power and gas, run a full heat cycle, and confirm proper sequencing with no fault codes.

Signs You Need a Replacement

• No response from the furnace on a call for heat
• Blower or inducer won't start or runs erratically
• Flashing diagnostic fault/error codes at the board LED
• Visible burnt traces, scorched relays, or a blown onboard fuse

Shipping & Returns

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