ICP Control Board Kit for RGS300HRFA0AAAA – Furnace Ignition Control | Ships Today

Overview

This OEM control board kit (part 1183618) is the brain of your ICP RGS300HRFA0AAAA gas furnace. It sequences the entire heat cycle — verifying safety inputs, energizing the igniter, opening the gas valve, monitoring flame sense, and timing the inducer and blower motors. A failed board commonly causes a furnace that won't ignite, blower or inducer that won't run, intermittent lockouts, or no response to a thermostat call. The kit ships with the mounting hardware and instructions needed for a clean OEM swap.

Specifications

Compatibility

Direct OEM replacement kit for the ICP / Heil / Tempstar RGS300HRFA0AAAA and related RGS-series furnaces. Match the board layout, connector locations, and harness pinout to your existing board before installing.

Installation Guide

1. Safety First – Disconnect electrical power and shut off gas; verify zero voltage with a multimeter.
2. Access – Remove the furnace control/blower compartment access panel.
3. Document – Photograph every wire harness and connector before unplugging anything.
4. Remove – Unplug all connectors, release the board mounting standoffs or screws, and lift out the old board.
5. Install – Mount the new board on the standoffs and reconnect every harness exactly per your photos.
6. Test – Restore gas and power, then run a full heat cycle and confirm proper ignition, flame sense, and blower timing.

Signs You Need a Replacement

• Furnace won't ignite or respond to the thermostat
• Blower or inducer motor won't start or run on schedule
• Repeated lockouts or erratic short cycling
• Visible scorching, burnt relays, or cracked solder on the board

Shipping & Returns

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