ICP Furnace Control Board Kit for RGS120LSAA0AAA — OEM Ignition Control | Ships Today
OEM Guaranteed
Same-Day Ship
30-Day Returns
Secure Checkout
Overview
This OEM control board kit (part number 1183618) is the integrated furnace control for the ICP / Tempstar / Heil RGS120LSAA0AAA gas furnace. The board is the furnace's brain — it manages the ignition sequence, sequences the inducer and blower motors, monitors the flame sensor and limit/pressure switches, and runs safety lockouts. When it fails you'll see no response to a thermostat call, blower or inducer that won't run, intermittent operation, or repeated safety lockouts with no other failed component. Boards commonly fail from voltage surges, heat stress, failed relays, or corroded connections. The kit supplies the correct board for a direct OEM replacement.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Type | Integrated Furnace Control Board Kit |
| Brand | ICP / Tempstar / Heil |
| Fits Model | RGS120LSAA0AAA |
| Function | Ignition, blower & inducer timing, safety monitoring |
| Fit | OEM exact replacement |
Compatibility
Designed for the ICP-built RGS120LSAA0AAA furnace and its Tempstar, Heil, and Comfortmaker equivalents. Verify OEM part number 1183618 and connector layout against your existing board before ordering.
Installation Guide
- Safety First — Disconnect power and shut off gas. Verify zero voltage with a multimeter.
- Access — Remove the furnace control/blower compartment panel.
- Document — Photograph every connector and wire position before disconnecting anything.
- Remove — Unplug each harness, remove the board mounting screws, and lift out the old board.
- Install — Mount the new board and reconnect each harness to its matching connector per your photos.
- Test — Restore gas and power, run a full heat cycle, and confirm correct ignition, blower, and shutdown sequencing.
Signs You Need a Replacement
- No response to a thermostat heat call
- Inducer or blower motor won't start or runs erratically
- Repeated safety lockouts with no other failed part
- Visible burn marks, corrosion, or failed relays 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