ICP Furnace Control Board Kit for RGS120SFCB0AAA | Integrated 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 ignition control for the ICP / Tempstar / Heil RGS120SFCB0AAA gas furnace. The board manages the complete heating sequence: it powers the inducer, proves the pressure switch, energizes the hot surface igniter, opens the gas valve, confirms flame via the sensor, and runs the blower on the correct heat and cool timings. It also provides the 24V control signals for thermostat calls and on-board diagnostics. When this board fails, the furnace loses its 'brain' and will not safely sequence a heat cycle. Common failure symptoms include no response to a thermostat call for heat, a furnace that locks out after one or two ignition attempts, a continuously running blower, or a diagnostic LED flashing a hard-fault code. Heat, line-voltage surges, condensation, and rodent damage are the usual culprits.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Type | Integrated Furnace Control Board Kit |
| Brand | ICP / Tempstar / Heil |
| Control Voltage | 24V |
| Application | Gas Furnace Ignition Control |
| Fitment | OEM Direct Replacement |
Compatibility
Direct OEM fit for the ICP / Tempstar / Heil RGS120SFCB0AAA gas furnace. The same control platform is shared across many ICP-family RGS and matched model variants. Always confirm the part number on your existing board before ordering.
Installation Guide
- Safety First — Disconnect power at the furnace switch and breaker, and verify zero voltage with a multimeter.
- Access — Remove the furnace control/blower compartment service panel.
- Document — Photograph every wire and connector on the board before disconnecting anything.
- Remove — Unplug the wiring harnesses and connectors, then remove the mounting screws and lift the old board out.
- Install — Mount the new board, transfer the jumper/timing settings, and reconnect every harness exactly per your photos.
- Test — Restore power, call for heat, and confirm a full ignition sequence and correct blower operation; check the diagnostic LED for normal status.
Signs You Need a Replacement
- No response from the furnace on a call for heat.
- Repeated ignition lockouts or hard-fault diagnostic codes.
- Blower runs continuously or fails to start.
- Visible burn marks, corrosion, or a blown trace/fuse 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