ICP Furnace Control Board Kit for RGS240HREA0AAAA — OEM | Ships Today

Overview

This OEM control board kit (part 1183618) is the integrated furnace control (IFC) brain of the ICP RGS240HREA0AAAA. It manages the entire heating sequence — inducer start, pressure switch proving, igniter warm-up, gas valve timing, flame sensing, and blower on/off delays — while running self-diagnostics and flashing fault codes through its onboard LED. When the board fails, symptoms range from a completely dead furnace to erratic short cycling, no inducer or blower operation, or ignition lockouts with no apparent cause. Burned relays, scorched traces, swollen capacitors, or a blank diagnostic LED point directly to a failed board.

Specifications

Compatibility

Direct OEM fit for the ICP / Tempstar / Heil RGS240HREA0AAAA furnace and related RGS240 chassis variants. Verify the board part number printed on your existing board against the model and serial label 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 plug and wire on the existing board before disconnecting — connectors are keyed but labeling speeds reassembly.
4. Remove — Unplug each harness, release the standoffs or screws, and lift out the old board.
5. Install — Mount the new board, transfer the dip-switch/jumper settings to match the original, and reconnect every harness per your photo.
6. Test — Restore power and run a full heat cycle, confirming the diagnostic LED shows normal operation with no fault codes.

Signs You Need a Replacement

• Furnace completely dead with power present
• No inducer, igniter, or blower response on a heat call
• Random short cycling or unexplained lockouts
• Visible burn marks, swollen capacitors, or a blank diagnostic LED

Shipping & Returns

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