ICP Control Board Kit for RGS240LRAA0AAAA — OEM Furnace Board 1183618 | Ships Today
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Overview
This is the genuine OEM control board kit (part number 1183618) for the ICP / Tempstar / Heil RGS240LRAA0AAAA gas/electric package unit. The integrated furnace control board is the brain of the unit — it sequences the inducer, igniter, gas valve, and blower, monitors the safety limits and flame sensor, and stores diagnostic fault codes. When the board fails, the whole unit can go dead or behave erratically. Typical symptoms include no response on a heat or cool call, a blower that runs constantly or never starts, ignition that won't sequence, and diagnostic LEDs that are dark or flashing a hard-fault code. Supplied as a kit, this OEM board restores proper sequencing and safety monitoring and eliminates the intermittent faults caused by a failing control.
Specifications
| Spec | Value |
|---|---|
| OEM Part Number | 1183618 |
| Description | Kit, Control Board |
| Type | Integrated Furnace Control (IFC) |
| Brand | ICP / Tempstar / Heil |
| Application | Ignition, Blower & Safety Control |
| Fitment | OEM Direct Replacement Kit |
Compatibility
Direct-fit OEM replacement kit for the ICP/Tempstar/Heil RGS240LRAA0AAAA package unit and related ICP-built equipment that originally used control board kit 1183618. Confirm the board layout, connector count, and mounting standoffs match your original before installing.
Installation Guide
- Safety First — Disconnect power and verify zero voltage with a multimeter. Shut off the gas supply.
- Access — Remove the control/electrical service panel.
- Document — Photograph every plug, harness, and jumper position on the old board before disconnecting.
- Remove — Unplug each connector, remove the mounting screws/standoffs, and lift out the old board.
- Install — Mount the new board, transfer any jumper/DIP settings, and reconnect each harness per your photo.
- Test — Restore gas and power, run a full heat and cool cycle, and confirm correct sequencing and no fault codes.
Signs You Need a Replacement
- No response to thermostat heat or cool calls
- Blower runs constantly or won't start
- Ignition sequence stalls or skips steps
- Diagnostic LED is dark or flashing a hard-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