ICP Furnace Control Board Kit for RGS240HEAA0AAAA — OEM 1183618 | Ships Today

Overview

This is a genuine OEM control board kit (part number 1183618) for the ICP/Tempstar/Heil RGS240HEAA0AAAA gas furnace. The integrated furnace control board is the brain of the unit: it manages the ignition sequence, monitors safety switches and flame, controls the inducer and blower timing, and communicates with the thermostat. The kit includes the board and the hardware needed for a complete replacement. A failed control board causes no-heat conditions, erratic blower or inducer operation, repeated lockouts, or a furnace that will not respond to the thermostat at all. Replacing the board with the correct OEM kit restores full, code-compliant furnace operation.

Specifications

Compatibility

Designed for the ICP/Tempstar/Heil RGS240HEAA0AAAA gas furnace and related RGS-series units. Verify the existing board part number and connector layout before ordering.

Installation Guide

1. Safety First — Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter.
2. Access — Remove the control/blower compartment panel.
3. Document — Photograph every wire harness and connector on the board before disconnecting.
4. Remove — Unplug each harness, unscrew the board from its standoffs, and lift it out.
5. Install — Mount the new board, reconnect every connector to the matching plug per your photo, and set any DIP switches to match the original.
6. Test — Restore power and run a full heat cycle to confirm ignition, inducer, blower timing, and thermostat response.

Signs You Need a Replacement

• Furnace completely unresponsive to the thermostat
• Repeated lockouts or error codes on the diagnostic LED
• Erratic blower or inducer motor behavior
• Visible burn marks, corrosion, or failed relays on the board

Shipping & Returns

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