ICP Control Board Kit for RHS243S0FA0AAAA — OEM 1183618 | Ships Today
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Overview
This OEM control board kit (part number 1183618, "Kit Control Board") is the factory replacement electronic control for the ICP RHS243S0FA0AAAA heat pump. The control board is the brain of the outdoor unit — it manages compressor and fan operation, sequences the reversing valve for heating and cooling, runs the defrost cycle on a timed/demand basis, and provides safety lockouts and diagnostic indications. Supplied as a complete kit with the necessary mounting hardware and instructions, it restores proper sequencing and protection when the original board has failed. A bad control board typically shows up as no compressor or fan operation, defrost cycles that never run (or run constantly), erratic mode switching, or fault codes on the board's LED.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 (Kit Control Board) |
| Type | Heat Pump Control / Defrost Board Kit |
| Brand | ICP |
| Control Voltage | 24V |
| Includes | Control board, mounting hardware, instructions |
| Fits Model | RHS243S0FA0AAAA |
Compatibility
Built for the ICP RHS243S0FA0AAAA and the equivalent Tempstar, Heil, and Comfortmaker heat pumps on the same platform. Verify the kit part number against the board currently installed in your unit before ordering.
Installation Guide
- Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter.
- Access — Remove the outdoor unit's electrical/control access panel.
- Document — Photograph every connector and wire on the existing board before unplugging.
- Remove — Unplug all harnesses, release the board standoffs/screws, and lift out the old board.
- Install — Mount the new board with the supplied hardware and reconnect each harness per your photo and the kit instructions.
- Test — Restore power, run a heating and cooling cycle, and confirm defrost sequencing and normal operation.
Signs You Need a Replacement
- Compressor and/or fan will not run on any call
- Defrost cycle never initiates or runs constantly
- Erratic heat/cool switching or random shutdowns
- Fault/error code or no LED activity 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