ICP Control Board Kit for RGS300SRAA0AAAA — OEM Furnace Control | Ships Today
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Overview
This is a genuine OEM control board kit (part number 1183618) for ICP, Heil, and Tempstar gas furnaces, including the RGS300SRAA0AAAA. The control board is the brain of the furnace — it sequences the entire heating cycle, energizing the inducer, proving pressure, firing the igniter, opening the gas valve, and timing the blower on and off. It also monitors safety circuits and stores fault codes on its diagnostic LED. When the board fails, the furnace may be completely dead, stuck on the blower, lock out repeatedly, or behave erratically with no consistent fault. This kit includes the OEM board so you can restore proper sequencing and safety control. Because it ships as a kit, mounting hardware and instructions are included to match the original installation.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Type | Furnace Control Board Kit |
| Brand | ICP / Heil / Tempstar |
| Function | Ignition & Blower Sequencing Control |
| Fitment | OEM |
Compatibility
Fits the ICP/Tempstar/Heil RGS300SRAA0AAAA and related furnaces that originally used the 1183618 control board kit. Verify your existing board part number before ordering, as control boards are model-specific.
Installation Guide
- Safety First — Disconnect power at the switch and breaker, then verify zero voltage with a multimeter.
- Access — Remove the control/blower compartment panel.
- Document — Photograph every wire and terminal on the board before disconnecting; move one connector at a time.
- Remove — Unplug all harnesses and unscrew the old board from its standoffs.
- Install — Mount the new board with the included hardware and reconnect each harness exactly per your photo.
- Test — Restore power, run a full heat cycle, and confirm proper inducer, igniter, gas valve, and blower sequencing with no fault codes.
Signs You Need a Replacement
- Furnace is completely dead with no response to a heat call
- Repeated lockouts or erratic, inconsistent operation
- Blower runs constantly or never starts
- Diagnostic LED is off or flashing a board-fault code
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