ICP Furnace Control Board Kit for RGS120SRAB0AAA — OEM 1183618 | Ships Today
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Overview
This genuine OEM Control Board Kit (Part #1183618) is the integrated furnace control (IFC) — the 'brain' of the ICP / Tempstar / Heil RGS120SRAB0AAA gas furnace. It manages the entire heating sequence: it reads the thermostat call, sequences the inducer motor, igniter, and gas valve, monitors safety switches and the flame sensor, controls the blower on/off timing, and flashes diagnostic fault codes. When the board fails — often from power surges, heat stress, or failed relays — the furnace may be completely dead, fail to ignite, blow cold air, or short cycle. This kit restores full, code-compliant control of the heating system.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Type | Integrated Furnace Control Board Kit |
| Brand | ICP / Tempstar / Heil |
| Fits Model | RGS120SRAB0AAA |
| Diagnostics | Onboard LED fault codes |
| Fit | OEM Direct Replacement |
Compatibility
Engineered for the ICP-family RGS120SRAB0AAA and related Tempstar, Heil, and Comfortmaker gas furnaces using this integrated control. As a factory kit it includes the necessary mounting and connection hardware. Always match your existing board part number before ordering.
Installation Guide
- Safety First — Disconnect electrical power and gas. Verify zero voltage with a multimeter.
- Access — Remove the blower/control compartment panel.
- Document — Photograph every wiring connector and terminal on the board before disconnecting — this is critical for control boards.
- Remove — Unplug each harness, release the board from its standoffs/screws, and lift it out.
- Install — Mount the new board, set any jumpers/dip switches to match the original, and reconnect each harness per your photos.
- Test — Restore power and gas, run a full heat cycle, and confirm proper ignition, blower timing, and no fault codes.
Signs You Need a Replacement
- Furnace completely unresponsive to thermostat calls
- No ignition sequence — inducer/igniter/gas valve don't activate
- Blower won't start or runs continuously
- Persistent or erratic LED fault codes / short cycling
Shipping & Returns
Ships same day on orders placed 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