ICP Control Board Kit for RGS240SSAA0AAAA — OEM Furnace Control 1183618 | Ships Today
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Overview
This OEM integrated furnace control board (kit part number 1183618) is the electronic brain of your ICP RGS240SSAA0AAAA gas furnace. It manages the ignition sequence, sequences the inducer and blower motors, monitors the flame signal and safety limits, and controls gas valve timing. When this board fails, the furnace may fail to ignite, short-cycle, run the blower continuously, lock out after several ignition attempts, or stop responding to the thermostat entirely. A flashing diagnostic LED that displays a fault code is one of the clearest indicators of a board-related problem. Replacing the control board restores reliable, code-compliant operation of the heating system.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Description | Kit, Control Board |
| Type | Integrated Furnace Control (IFC) |
| Brand | ICP / Tempstar / Heil |
| Control Voltage | 24V |
| Fitment | OEM direct replacement |
| Application | Gas furnace control |
Compatibility
This control board kit is the factory replacement for the ICP RGS240SSAA0AAAA gas furnace and is shared across many Tempstar, Heil, and other International Comfort Products gas furnace platforms that use the same control architecture. Always confirm the printed part number on your existing board matches 1183618 before installing.
Installation Guide
- Safety First — Disconnect power at the furnace switch and breaker, and shut off the gas. Verify zero voltage with a multimeter before proceeding.
- Access — Remove the blower compartment service panel to expose the control board.
- Document — Photograph every wire and connector location before disconnecting anything.
- Remove — Unplug the wiring harnesses, release the board mounting clips or screws, and lift out the old board.
- Install — Mount the new 1183618 board, then reconnect each harness exactly as photographed.
- Test — Restore gas and power, run a full heat cycle, and confirm the diagnostic LED shows normal operation with no fault codes.
Signs You Need a Replacement
- Furnace will not ignite or locks out after repeated ignition attempts
- Blower or inducer motor runs continuously or won't start
- Diagnostic LED is dark or flashing a hard-fault code
- Furnace ignores thermostat calls for heat
Shipping & Returns
Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.
Shipping Information
- Orders placed before 3PM CST ship same business day
- Standard delivery: 2-5 business days
- Express shipping available at checkout
- Free shipping on orders over $75
- Tracking number emailed upon shipment
Return Policy
- 30-day returns on unused parts in original packaging
- Electrical parts (capacitors, contactors, control boards) are final sale once installed
- Email info@nationalhvacparts.com to initiate a return
- Refunds processed within 5-7 business days