ICP Control Board Kit for RHH036H0BA0AAAA — OEM Defrost/Control | Ships Today

Overview

This OEM control board kit (part #1183618) is the genuine replacement control/defrost board assembly for the ICP/Tempstar/Heil RHH036H0BA0AAAA heat pump. The control board is the brain of the outdoor unit — it manages the defrost cycle, sequences the compressor and reversing valve, monitors safety inputs, and coordinates the 24V signals to the contactor and reversing valve coil. Supplied as a complete kit, it includes the board and necessary mounting hardware for a clean, direct replacement. When the board fails, the heat pump may lose defrost, fail to switch modes, short-cycle, or stop responding to thermostat calls entirely.

Specifications

Compatibility

Designed as the factory replacement for the ICP RHH036H0BA0AAAA heat pump and shared-platform Tempstar, Heil, and Comfortmaker condensing units that originally used board kit 1183618. Confirm the board part number against the label on your existing board before ordering.

Installation Guide

1. Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter.
2. Access — Remove the condenser control-box panel.
3. Document — Photograph every wire, plug, and terminal on the old board before disconnecting.
4. Remove — Unplug all connectors, release the standoffs/screws, and lift out the old board.
5. Install — Mount the new board with the supplied hardware and reconnect every lead per your photo.
6. Test — Restore power, confirm the board powers up, and verify heating, cooling, and a defrost call sequence correctly.

Signs You Need a Replacement

• Heat pump won't run defrost or ices over outdoors
• No response to thermostat heating or cooling calls
• Erratic short-cycling or random mode behavior
• Visible burn marks, corrosion, or blown traces on the board

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.