ICP Control Board Kit for RHS240S0FA0AAAA — OEM 1183618 | Ships Today
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Overview
This is the genuine OEM control board kit (part 1183618) for the ICP / Tempstar / Heil RHS240S0FA0AAAA. The control board is the brain of the unit — it manages compressor staging, fan operation, defrost timing, safety lockouts, and the diagnostic fault codes that guide troubleshooting. When a board fails from power surges, corrosion, heat, or aged components, the symptoms range from a completely dead unit to erratic operation, missed defrost cycles, or persistent fault codes. This kit ships complete with the mounting hardware needed for a clean, reliable replacement.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Description | Control Board Kit |
| Type | Integrated Control Board |
| Brand | ICP (Tempstar / Heil) |
| Fits Model | RHS240S0FA0AAAA |
| Fitment | OEM / Direct Replacement |
Compatibility
Designed for the ICP RHS240S0FA0AAAA and related Tempstar, Heil, and Comfortmaker units on the RHS240 platform. Confirm the board part number against your existing board before installing.
Installation Guide
- Safety First — Disconnect power at the disconnect and verify zero voltage with a multimeter.
- Access — Remove the control panel cover to expose the board.
- Document — Photograph every harness and plug position before disconnecting.
- Remove — Unplug each connector, release the board standoffs or screws, and lift the old board out.
- Install — Mount the new board with the supplied hardware and reconnect each harness to the matching header per your photo.
- Test — Restore power, confirm the board powers up with no fault codes, and verify normal heating and cooling operation.
Signs You Need a Replacement
- Unit is completely dead with no response to thermostat calls
- Persistent or flashing diagnostic fault codes
- Erratic operation, missed defrost, or random shutdowns
- Visible burn marks, corrosion, or swollen 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