ICP Furnace Control Board Kit for RGS120SECB0AAA — 1183618 OEM Ignition Control | Ships Today
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Overview
The 1183618 control board kit is the OEM integrated furnace control (IFC) for the ICP / Tempstar / Heil RGS120SECB0AAA gas furnace. This board is the brain of the furnace: it sequences the inducer, hot surface igniter, gas valve, and blower, manages flame sensing and safety lockouts, and runs the onboard diagnostic LED. When the board fails, the furnace may not respond to thermostat calls, may short-cycle, may fail to energize the igniter or gas valve, or may flash repeated fault codes. The kit ships as a complete control assembly so you can swap the failed unit rather than chasing intermittent solder or relay faults on the old board.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Type | Integrated Furnace Control Board |
| Brand | ICP / Tempstar / Heil |
| Line Voltage | 120V |
| Control Voltage | 24V |
| Application | Gas Furnace |
| Fitment | OEM Kit Replacement |
Compatibility
Direct OEM kit replacement for the ICP / Tempstar / Heil RGS120SECB0AAA furnace and related International Comfort Products models specifying control board 1183618. Verify the part number printed on your existing board before ordering, as ICP used several IFC variants across this platform.
Installation Guide
- Safety First — Disconnect power at the furnace switch or breaker and verify zero voltage with a multimeter.
- Access — Remove the blower compartment service panel to expose the control board.
- Document — Photograph every wire and connector position on the old board before disconnecting.
- Remove — Unplug all harness connectors and thermostat leads, remove the board mounting screws or standoffs, and lift out the old control.
- Install — Mount the new 1183618 board, then reconnect each connector exactly as shown in your reference photo.
- Test — Restore power, set a heat call, and confirm the board sequences the inducer, igniter, gas valve, and blower with no fault codes on the diagnostic LED.
Signs You Need a Replacement
- Furnace does not respond to a thermostat call for heat.
- Igniter or gas valve never energizes despite a good igniter and valve.
- Persistent or erratic fault-code flashing on the diagnostic LED.
- Short-cycling or random blower operation traced to 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