ICP Furnace Control Board for RGS120LDAB0AAA — OEM Ignition Control Kit | Ships Today
OEM Guaranteed
Same-Day Ship
30-Day Returns
Secure Checkout
Overview
The integrated furnace control board is the brain of your ICP / Tempstar / Heil RGS120LDAB0AAA. It sequences the entire heat cycle — energizing the inducer, proving pressure, firing the hot surface igniter, opening the gas valve, and timing the blower on and off. It also runs the safety logic that locks the furnace out if a limit, flame, or pressure fault is detected. This OEM control board kit (part 1183618) is the exact-fit replacement and ships as a kit with the hardware needed for a clean swap.
A failing board can cause intermittent no-heat calls, a furnace stuck in lockout, a blower that runs constantly or not at all, or erratic behavior with no consistent fault code. Boards are frequently damaged by power surges, moisture, and overheating relays.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Type | Integrated Furnace Control Board Kit |
| Brand | ICP / Tempstar / Heil |
| Line Voltage | 120V |
| Control Voltage | 24V |
| Fits Model | RGS120LDAB0AAA |
| Fitment | OEM Direct Replacement |
Compatibility
Designed for the ICP Tempstar Heil RGS120LDAB0AAA gas furnace and platform-equivalent models specifying control board kit 1183618. Verify your existing board's part number and connector layout before ordering.
Installation Guide
- Safety First — Disconnect power at the switch and breaker; verify zero voltage with a multimeter.
- Access — Remove the furnace service panel to expose the control board.
- Document — Photograph every wire and connector on the old board before disconnecting anything.
- Remove — Unplug all harnesses, remove the mounting screws/standoffs, and take out the old board.
- Install — Mount the new board and reconnect every harness exactly per your photo.
- Test — Restore power, run a full heat cycle, and confirm proper ignition, blower timing, and no fault codes.
Signs You Need a Replacement
- Intermittent or complete loss of heat with no clear fault
- Furnace stuck in lockout or short-cycling
- Blower runs continuously or fails to start
- Burnt spots, cracked relays, or scorching 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