ICP Furnace Control Board Kit for RGS300HREA0AAAA — OEM Integrated Control | Ships Today
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Overview
The control board kit (OEM part 1183618) is the brain of your ICP RGS300HREA0AAAA gas furnace. This integrated furnace control sequences the entire heating and cooling cycle: it reads the thermostat call, runs the inducer and proves the pressure switch, energizes ignition, monitors flame rectification, and times the blower on and off. It also drives the cooling blower speed and reports diagnostic fault codes through its onboard LED. When the board fails, you see blank LEDs, no response to a call, blower-only operation with no ignition, or repeated soft lockouts that no other component explains. This kit ships with the mounting hardware and instructions needed for a clean swap.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Type | Integrated Furnace Control Board Kit |
| Brand | ICP (Heil / Tempstar) |
| Control Voltage | 24 VAC |
| Diagnostics | Onboard LED Fault Codes |
| Fit | OEM Direct Replacement Kit |
Compatibility
Direct OEM replacement for the ICP/Heil/Tempstar RGS300HREA0AAAA and shared-platform gas furnaces using this integrated control. Verify the board part number and connector layout against your existing control before installing.
Installation Guide
- Safety First — Disconnect power and gas, then verify zero voltage with a multimeter.
- Access — Remove the blower/control-compartment service panel.
- Document — Photograph every harness connector and the thermostat wiring before unplugging anything.
- Remove — Unplug each labeled connector, unscrew the board from its standoffs, and lift it out.
- Install — Mount the new board, transfer connectors one-for-one per your photos, and set any speed/timing jumpers to match.
- Test — Restore power and gas, run a full heat and cool cycle, and confirm the LED shows normal status with no fault codes.
Signs You Need a Replacement
- No LED light and no response to a thermostat call.
- Inducer or blower runs but ignition never sequences.
- Random lockouts with no pressure, flame, or limit fault to explain them.
- Burned, corroded, or relay-clicking spots visible on the board.
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