ICP Furnace Control Board for RGS120LFCB0AAA — OEM Kit 1183618 | Ships Today
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Overview
This is the genuine OEM integrated furnace control board kit (part #1183618) for the ICP/Tempstar/Heil RGS120LFCB0AAA gas furnace. The control board is the brain of the furnace — it manages the ignition sequence, blower and inducer timing, safety lockouts, and communication between the thermostat, gas valve, and limit switches. When the board fails, the furnace may fail to ignite, short-cycle, run the blower continuously, or stop responding to the thermostat entirely. A flashing diagnostic LED with an error code is a common sign of board trouble. This kit ships fully tested and includes the mounting hardware needed for a direct replacement.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Type | Integrated Furnace Control Board Kit |
| Brand | ICP / Tempstar / Heil |
| Control Voltage | 24V |
| Line Voltage | 120V |
| Application | Gas Furnace |
| Fitment | OEM Direct Replacement |
Compatibility
Engineered as a direct-fit replacement for the ICP/Tempstar/Heil RGS120LFCB0AAA furnace. This board is also used across many related ICP-family gas furnace platforms (Comfortmaker, Arcoaire, KeepRite). Always verify your existing board 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 furnace front service panel.
- Document — Photograph every wire and connector on the existing board before disconnecting anything.
- Remove — Unplug each wiring harness, remove the mounting screws/standoffs, and lift out the old board.
- Install — Mount the new board on the same standoffs and reconnect each harness exactly per your photo.
- Test — Restore power and run a full heat cycle; confirm ignition, inducer, and blower sequence and verify no fault codes on the diagnostic LED.
Signs You Need a Replacement
- Furnace will not ignite or respond to the thermostat
- Blower or inducer motor runs continuously or won't start
- Flashing diagnostic LED showing a board/control fault code
- Intermittent operation or random short-cycling
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