ICP Furnace Control Board for RGS091LTCB0AAA — OEM Kit 1183618 | Ships Today
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Overview
This genuine OEM control board kit (part number 1183618) is the integrated furnace control (IFC) for the ICP RGS091LTCB0AAA gas furnace. The board is the brain of the system: it sequences the inducer, hot surface igniter, gas valve, and blower; monitors safety inputs from the pressure switch, limit, and flame sensor; and manages timing, fault diagnostics, and the LED error codes. When the board fails, the furnace may be completely dead, stuck on a continuous blower, locked out with a flashing fault code, or short-cycling. Common failure causes include power surges, lightning, overheating from a restricted blower, corroded relays, and cracked solder joints. Replacing the board with the correct OEM kit restores full, code-correct furnace operation.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Type | Integrated Furnace Control Board Kit |
| Brand | ICP (Heil / Tempstar) |
| Fits Model | RGS091LTCB0AAA |
| Function | Ignition, blower, and safety circuit control |
| Fitment | OEM direct replacement |
Compatibility
Designed for the ICP / Heil / Tempstar RGS091LTCB0AAA gas furnace and shared-platform models using this integrated control. Match the part number and connector layout to your existing board before installing.
Installation Guide
- Safety First — Disconnect power and shut off gas. Verify zero voltage with a multimeter.
- Access — Remove the blower-compartment service panel to reach the control board.
- Document — Photograph every wire and connector position before disconnecting — this is critical for a board swap.
- Remove — Unplug the harnesses, remove the mounting screws, and lift out the old board.
- Install — Mount the new board, transfer any jumpers/settings, and reconnect each plug per your photos.
- Test — Restore power and gas, then run a full heat cycle and confirm no fault codes on the diagnostic LED.
Signs You Need a Replacement
- Furnace is completely unresponsive (no ignition sequence)
- Flashing fault/error codes or board diagnostic lockout
- Blower runs constantly or won't start
- Short-cycling or erratic, intermittent operation
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