ICP Furnace Control Board Kit for RGS120HRBB0AAA — OEM Replacement | Ships Today
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Overview
This OEM integrated furnace control board kit (part number 1183618) is the electronic brain of your ICP RGS120HRBB0AAA gas furnace. It manages the entire heating sequence — sequencing the inducer motor, hot surface igniter, gas valve, and blower while continuously monitoring the pressure switch, limit switches, and flame sensor for safe operation. When the control board fails, the furnace can exhibit a wide range of erratic behavior: no response to a heat call, blower running constantly, short cycling, intermittent operation, or fault-code flashes from the diagnostic LED. Because the board governs every safety interlock, a damaged or corroded board should always be replaced with a correct OEM unit rather than bypassed. This kit ships with the mounting hardware and connectors needed for a straightforward swap.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Type | Integrated Furnace Control Board Kit |
| Brand | ICP / Tempstar / Heil |
| Function | Ignition, Blower & Safety Sequencing |
| Application | Gas Furnace |
| Fitment | OEM Replacement Kit |
Compatibility
Built as a direct OEM fit for the ICP / Tempstar / Heil RGS120HRBB0AAA gas furnace and supplied as a complete kit. As an integrated furnace control it also serves as the correct replacement across compatible ICP-family furnaces specified for this board number.
Installation Guide
- Safety First — Disconnect electrical power at the furnace switch and breaker, then verify zero voltage with a multimeter.
- Access — Remove the furnace blower-compartment door to reach the control board mounting tray.
- Document — Photograph every connector and harness location before unplugging anything; the board has many similar plugs.
- Remove — Unplug each harness, release the board from its standoffs or tray, and set the old board aside.
- Install — Mount the new board, then reconnect each harness to its matching plug exactly per your photos.
- Test — Restore power, call for heat, and verify the full sequence — inducer, igniter, gas valve, and blower — runs without fault codes.
Signs You Need a Replacement
- Furnace does not respond at all to a thermostat heat call.
- Blower runs continuously or starts at the wrong time in the cycle.
- Repeated short cycling or intermittent, unpredictable operation.
- Diagnostic LED flashes a hard-fault code or stays dark with power applied.
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