ICP Furnace Control Board Kit for RGS303HTEA0AAAA — OEM 1183618 | Ships Today

Overview

This is the OEM control board kit (part number 1183618) for the ICP / Tempstar / Heil RGS303HTEA0AAAA gas furnace. The integrated furnace control board is the brain of the system: it sequences ignition, manages the inducer and blower motors, monitors safety limits and flame, and communicates with the thermostat. A failed board causes no-heat conditions, blower or inducer that won't start, erratic cycling, or flashing diagnostic fault codes. This kit ships with the components needed for a clean OEM replacement.

Specifications

Compatibility

Direct OEM replacement for the ICP/Tempstar/Heil RGS303HTEA0AAAA furnace and related ICP-family models using control board kit 1183618. Confirm the part number printed on your existing board before ordering, and match any factory jumper or DIP-switch settings during installation.

Installation Guide

1. Safety First — Disconnect power at the furnace switch and breaker. Verify zero voltage with a multimeter.
2. Access — Remove the furnace control/blower service panel.
3. Document — Photograph every wire and connector location and note all DIP/jumper settings before disconnecting.
4. Remove — Unplug the harness connectors, remove the mounting screws, and lift out the old board.
5. Install — Mount the new board, transfer DIP/jumper settings, and reconnect every harness exactly per your photo.
6. Test — Restore power and run a full heating cycle, confirming ignition, blower, and inducer operate and no fault codes flash.

Signs You Need a Replacement

• No heat with blower and inducer failing to energize
• Flashing diagnostic LED fault codes pointing to the control
• Erratic short-cycling or random shutdowns
• 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.