ICP Furnace Control Board Kit for RGS120LEAA0AAA — Integrated Ignition Control | Ships Today
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Overview
This OEM control board kit (OEM #1183618) is the integrated furnace control for the ICP / Tempstar / Heil RGS120LEAA0AAA. It manages the full heat sequence — inducer start, pressure-switch proving, igniter warm-up, gas valve timing, flame sensing, and blower on/off delays — and ties the 24V thermostat circuit to the 120V components. As a factory kit it includes the board and the mounting hardware/harness needed for a direct replacement. Boards typically fail from heat-stressed relays, blown onboard fuses, or corroded flame-sense circuitry, producing intermittent no-heat, short cycling, or a blower that won't shut off. Most boards display a diagnostic LED flash code that helps confirm the fault before you swap it.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Type | Integrated Furnace Control Board Kit |
| Brand | ICP / Tempstar / Heil |
| Line Voltage | 120V |
| Control Voltage | 24V |
| Fits Model | RGS120LEAA0AAA |
Compatibility
Built for the RGS120LEAA0AAA and shared across ICP-manufactured Tempstar, Heil, and Comfortmaker furnaces using this control platform. Match the part number on your existing board before ordering.
Installation Guide
- Safety First — Disconnect power at the switch and breaker; verify zero voltage with a multimeter.
- Access — Remove the furnace control-compartment service panel.
- Document — Photograph every wire and terminal on the old board before disconnecting.
- Remove — Label and unplug the harnesses, remove the mounting screws, and lift out the failed board.
- Install — Mount the new board, transfer connections exactly per your photo, and set any required jumpers/dip switches to match.
- Test — Restore power, run a full heat cycle, and verify ignition, flame sensing, and proper blower timing; read the LED status code.
Signs You Need a Replacement
- Intermittent or complete no-heat with no other failed components.
- Furnace short cycles or blower runs continuously.
- Diagnostic LED shows a hard fault or no code at all.
- Visible burnt traces, swollen relay, or blown onboard fuse.
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