ICP Furnace Control Board for RGS240SSEA0AAAA — OEM 1183618 Control Board Kit | Ships Today
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Overview
This is the genuine OEM control board kit (ICP part number 1183618) for the ICP/Tempstar/Heil RGS240SSEA0AAAA gas furnace. The integrated furnace control board (IFC) is the brain of the system — it manages the ignition sequence, sequences the inducer and blower motors, monitors safety switches and the flame sensor, and controls timing for every heat and cool cycle. When the board fails, the furnace may not respond to the thermostat, blow cold air, short-cycle, or lock out entirely. A flashing diagnostic LED with no logical fault, scorched relay traces, or a board that is completely dead are clear indicators of board failure.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Description | Kit, Control Board |
| Type | Integrated Furnace Control Board |
| Brand | ICP (Tempstar / Heil) |
| Fit | OEM Direct Replacement |
| Application | Gas Furnace Control |
Compatibility
Supplied as a kit and engineered as a direct-fit replacement for the ICP/Tempstar/Heil RGS240SSEA0AAAA gas furnace. This control board is used across multiple ICP-family RGS-series furnaces — verify OEM number 1183618 matches your original board before installing.
Installation Guide
- Safety First — Disconnect power at the furnace switch and breaker; verify zero voltage with a multimeter.
- Access — Remove the furnace control/service panel.
- Document — Photograph every wire and connector position on the old board before disconnecting anything.
- Remove — Unplug all harness connectors and low-voltage leads, then remove the board mounting screws.
- Install — Mount the new board, set any dip switches to match the old board, and reconnect each wire exactly per your photo.
- Test — Restore power, run a full heat cycle, and confirm proper ignition, blower, and shutdown sequencing.
Signs You Need a Replacement
- Furnace does not respond to the thermostat at all.
- Blower or inducer fails to start or won't shut off.
- Random short-cycling or repeated unexplained lockouts.
- Burnt smell, scorched relay, or dead diagnostic LED on the board.
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