ICP Furnace Control Board for RGS243SDFA0AAAA — OEM Kit 1183618 | Ships Today
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Overview
The OEM Integrated Furnace Control (IFC) board kit 1183618 is the brain of your ICP/Heil/Tempstar RGS243SDFA0AAAA gas furnace. It manages the ignition sequence, blower and inducer timing, safety lockouts, and flame sensing. When this board fails you'll see no response from the thermostat, repeated ignition lockouts, a blower that never starts (or never stops), or error/flash codes on the diagnostic LED. This is a complete factory replacement kit supplied as ICP part number 1183618.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 (KIT CONTROL BOARD) |
| Type | Integrated Furnace Control Board |
| Brand | ICP / Heil / Tempstar |
| Fits Model | RGS243SDFA0AAAA |
| Fit | OEM Direct Replacement |
Compatibility
Designed as a direct OEM fit for the ICP Tempstar Heil RGS243SDFA0AAAA gas furnace and closely related RGS243 series units that originally shipped with control board 1183618. Always confirm your existing board's part number before ordering.
Installation Guide
- Safety First — Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter.
- Access — Remove the blower compartment service panel.
- Document — Photograph every wire and connector on the existing board before disconnecting anything.
- Remove — Label and unplug each connector, remove the board mounting screws/standoffs, and lift out the failed control board.
- Install — Mount the new 1183618 board, then reconnect every harness exactly per your photos.
- Test — Restore power and run a full heat cycle; confirm ignition, flame proving, and blower operation with no fault codes.
Signs You Need a Replacement
- Furnace does not respond to thermostat calls for heat
- Repeated ignition lockout or rapid LED fault codes
- Blower or inducer motor will not start or will not shut off
- Visible burn marks, cracked relays, or corrosion 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