ICP Integrated Furnace Control Board Kit for RGS150LFCA0AAAA — Part 1183618 | Ships Today
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Overview
The ICP Control Board Kit (OEM part 1183618) is the integrated furnace control (IFC) that manages the entire heating sequence on your ICP / Tempstar / Heil RGS150LFCA0AAAA gas furnace. This circuit board governs the inducer motor, hot surface igniter, gas valve, blower timing, and safety lockouts, while monitoring flame sense and limit/pressure switch feedback. When the board fails you may see a furnace that won't ignite, blower that runs continuously, intermittent no-heat calls, or a flashing diagnostic LED reporting a hard lockout. Because the board coordinates every safety device, a failed control board should always be replaced with the correct OEM kit rather than bypassed.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Type | Integrated Furnace Control Board Kit |
| Brand | ICP (Tempstar / Heil) |
| Fits Model | RGS150LFCA0AAAA |
| Function | Igniter, gas valve, inducer & blower control with diagnostics |
| Fitment | OEM direct replacement |
Compatibility
This kit is a direct OEM replacement for the ICP / Tempstar / Heil RGS150LFCA0AAAA gas furnace and related RGS150 series units that originally shipped with control board 1183618. Always verify the existing board's part number before ordering, as ICP used several IFC revisions across the platform.
Installation Guide
- Safety First — Disconnect power at the furnace switch and breaker; verify zero voltage with a multimeter before touching the board.
- Access — Remove the furnace blower/control compartment door.
- Document — Photograph every wire and connector position on the old board before disconnecting anything.
- Remove — Unplug the wiring harnesses, remove the mounting screws/standoffs, and lift out the old control board.
- Install — Mount the new 1183618 board, transfer all connectors exactly per your photos, and confirm dip-switch/jumper settings match the original.
- Test — Restore power and run a full heat cycle; confirm proper ignition, blower timing, and a steady (no-fault) diagnostic LED.
Signs You Need a Replacement
- Furnace will not ignite or repeatedly locks out
- Blower runs constantly or never starts
- Diagnostic LED flashing a hard-fault code
- Burnt smell, scorched traces, or visible relay damage 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