ICP Control Board Kit for RHH036S0XA0AAAA — OEM Defrost Control | Ships Today
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Overview
This OEM control board kit (ICP part 1183618) is the electronic brain of the ICP / Heil / Tempstar RHH036S0XA0AAAA heat pump. It manages defrost timing and termination, compressor and reversing-valve sequencing, and the 24V control logic that coordinates safe operation. When the board fails you may see no operation, erratic or runaway defrost cycles, a unit stuck in defrost, or compressor and fan outputs that never energize. The kit ships with the components needed for a clean board swap and restores correct sequencing and defrost control.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Type | Control Board Kit (Defrost / Sequencing) |
| Brand | ICP (Heil / Tempstar / Comfortmaker) |
| Control Voltage | 24V |
| Application | Heat Pump |
| Fit | OEM direct replacement |
Compatibility
Engineered for the ICP / Heil / Tempstar RHH036S0XA0AAAA heat pump and related ICP-family units that use this control board kit. Verify the board number printed on your existing board before ordering.
Installation Guide
- Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter.
- Access — Remove the service panel to reach the control board.
- Document — Photograph every plug and wire and note all DIP-switch or jumper positions before disconnecting.
- Remove — Unplug the harness connectors and unclip or unscrew the old board from its standoffs.
- Install — Mount the new board, set switches/jumpers to match the original, and reconnect each connector per your photo.
- Test — Restore power, run a heat and cool call, and confirm proper sequencing and defrost operation.
Signs You Need a Replacement
- Unit completely dead or compressor/fan outputs never energize
- Stuck in defrost or defrost never initiates
- Erratic cycling or no response to thermostat calls
- Visible burn marks, scorched traces, or a failed relay 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