ICP Furnace Control Board Kit for RGS243LSAA0AAAA | Ships Today
OEM Guaranteed
Same-Day Ship
30-Day Returns
Secure Checkout
Overview
This OEM control board kit (part number 1183618) is the brain of your ICP RGS243LSAA0AAAA gas furnace. It manages the entire heating sequence — verifying the pressure switch, energizing the inducer, powering the hot surface igniter, opening the gas valve, monitoring flame, and timing the blower on and off. When the board fails, the furnace loses its logic and safety supervision. Common failure symptoms include no response to the thermostat, the blower running constantly or not at all, flashing diagnostic LED fault codes, intermittent operation, or visible burn marks and bulged components on the board.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Type | Integrated Furnace Control Board Kit |
| Brand | ICP (Tempstar / Heil) |
| Function | Ignition, Blower & Safety Control |
| Fitment | OEM Replacement Kit |
Compatibility
Supplied as a complete OEM replacement kit for the ICP / Tempstar / Heil RGS243LSAA0AAAA, and used across related ICP-family gas furnaces that specify this control. The kit includes mounting hardware and instructions; confirm your harness plug layout matches before installation.
Installation Guide
- Safety First — Disconnect power at the breaker and verify zero voltage at the board with a multimeter.
- Access — Remove the blower/control compartment service panel.
- Document — Photograph every wire harness and plug location before disconnecting.
- Remove — Unplug each connector, remove the mounting screws, and lift out the failed board.
- Install — Mount the new board from the kit and reconnect every harness exactly per your photos.
- Test — Restore power, call for heat, and verify a complete ignition and blower cycle with no fault codes.
Signs You Need a Replacement
- No response from the furnace when the thermostat calls
- Flashing LED diagnostic fault codes
- Blower runs constantly or never engages
- Scorch marks, corrosion, or bulged components 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