ICP Control Board Kit for RHS150L0EA0AAAA — Heat Pump Defrost Board | Ships Today
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Overview
This is the genuine OEM control board kit (part number 1183618) for the ICP/Heil/Tempstar RHS150L0EA0AAAA heat pump. The control board is the brain of the outdoor unit: it manages the defrost cycle, switches the reversing valve between heating and cooling, sequences the compressor contactor and condenser fan, and monitors safety inputs such as the defrost thermostat and pressure switches. A failed board is a frequent cause of a heat pump that won't switch modes, runs in permanent defrost, ices over in heating, or fails to energize the outdoor unit at all. The kit ships with the matching mounting hardware and connector references needed for a clean swap.
Specifications
| Spec | Value |
|---|---|
| Part Number | 1183618 |
| Type | Defrost / Control Board Kit |
| Brand | ICP (Heil / Tempstar / Comfortmaker) |
| Control Voltage | 24V |
| Application | Heat Pump Outdoor Unit |
| Fit | Genuine OEM |
Compatibility
Direct-fit replacement for the ICP/Heil/Tempstar RHS150L0EA0AAAA heat pump and related RHS-series outdoor units that use this control board kit. Confirm the board part number and connector layout against your existing board before ordering.
Installation Guide
- Safety First — Disconnect power at the outdoor disconnect and verify zero voltage with a multimeter.
- Access — Remove the control-panel service cover on the condensing unit.
- Document — Photograph every wire and connector on the old board before disconnecting; note connector keying.
- Remove — Unplug each harness, release the board standoffs or screws, and lift out the failed board.
- Install — Mount the new board on the supplied standoffs and reconnect each harness to the matching connector per your photo. Verify any defrost-timing jumper or dip-switch matches the original.
- Test — Restore power, run a heating and a cooling call, and confirm the reversing valve shifts and the defrost cycle initiates correctly.
Signs You Need a Replacement
- Heat pump won't switch between heating and cooling.
- Outdoor coil ices over because defrost never initiates.
- Unit stuck running in permanent defrost.
- Outdoor unit completely dead while low-voltage power is present.
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