ICP Furnace Control Board Kit for RGS120SRBA0AAA | Ships Today

Overview

This is a genuine OEM control board kit (part 1183618) for the ICP/Heil/Tempstar RGS120SRBA0AAA gas furnace. The integrated furnace control board is the brain of the furnace — it sequences ignition, monitors flame via the sensor, manages the inducer and blower motors, and enforces every safety interlock including limit switches and pressure switches. When it fails, the furnace may not respond to the thermostat at all, may short-cycle, may run the blower continuously, or may lock out with no clear cause. The kit ships with the matched board and mounting hardware for a clean replacement.

Specifications

Compatibility

Direct-fit replacement for the ICP RGS120SRBA0AAA and ICP-family gas furnaces specifying control board kit 1183618. Verify the part number printed on your existing board and the connector layout before installing.

Installation Guide

1. Safety First — Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter.
2. Access — Remove the furnace control/blower compartment panel.
3. Document — Photograph every wire harness and terminal connection on the old board before touching anything.
4. Remove — Unplug each connector, remove the mounting screws, and lift out the old board.
5. Install — Mount the new board with the supplied hardware and reconnect every harness exactly per your photos.
6. Test — Restore power, call for heat, and confirm a full ignition sequence with proper blower and inducer operation.

Signs You Need a Replacement

• Furnace does not respond to thermostat calls for heat
• Blower runs constantly or fails to start
• Random short-cycling or unexplained lockouts
• Visible burn marks, corrosion, or cracked traces on the board

Shipping & Returns

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