ICP Furnace Control Board Kit for RGS120LECA0AAA — OEM | Ships Today
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Overview
This genuine OEM control board kit (part number 1183618) is the integrated furnace control (IFC) for the ICP / Tempstar / Heil RGS120LECA0AAA gas furnace. The control board is the brain of the furnace — it sequences the entire heat cycle by managing the inducer motor, the hot surface igniter, the gas valve, the blower motor timing, and all safety interlocks including the pressure switch and limit circuits. It also reads the flame sensor signal to confirm a stable flame. When the board fails, the furnace may not start at all, may short-cycle, may run the blower continuously, or may flash diagnostic fault codes via its onboard LED. Because the board ties every other component together, a faulty board can mimic the symptoms of an igniter, gas valve, or blower problem, making it a critical diagnostic and repair part.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Type | Integrated Furnace Control Board Kit |
| Brand | ICP / Tempstar / Heil |
| Function | Ignition, blower, gas valve & safety sequencing |
| Application | Gas Furnace |
| Fitment | OEM |
Compatibility
Designed as a direct-fit replacement for the ICP RGS120LECA0AAA and related Tempstar, Heil, and Comfortmaker furnaces using this integrated control platform. Match the board's connector layout and part number to your existing board before installing.
Installation Guide
- Safety First — Disconnect furnace power and verify zero voltage with a multimeter.
- Access — Remove the furnace control-compartment service panel.
- Document — Photograph every harness connection before unplugging anything.
- Remove — Unplug all connectors, remove the mounting screws, and lift out the old board.
- Install — Mount the new board and transfer each connector to its matching terminal per your photo.
- Test — Restore power, call for heat, and verify a full ignition and blower cycle with no fault codes.
Signs You Need a Replacement
- Furnace completely unresponsive to thermostat
- Short-cycling or erratic blower operation
- Diagnostic LED flashing a control/board fault code
- Burned spots, corrosion, or failed relays 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