ICP Control Board Kit for RHH072L0AA0AAAA — OEM 1183618 24V Replacement | Ships Today

Overview

This OEM control board kit (part #1183618) is the central electronic brain for the ICP Tempstar Heil RHH072L0AA0AAAA heat pump system. The board manages defrost timing, fan and compressor staging, reversing valve switching, and safety lockouts. When it fails, the unit may stop responding to the thermostat, run constant or no defrost cycles, blow control fuses, or refuse to start the compressor. The kit ships complete with the mounting hardware and connector pigtails required for a clean drop-in replacement.

Specifications

Compatibility

Engineered as the factory control for the ICP Tempstar Heil RHH072L0AA0AAAA and closely related RHH072 series heat pumps. Always verify the existing board number against 1183618 before ordering, as ICP revised control boards across production runs.

Installation Guide

1. Safety First — Disconnect power at the breaker and disconnect, then verify zero voltage at the board with a multimeter.
2. Access — Remove the control/service panel to expose the board.
3. Document — Photograph every wire and connector position before disconnecting anything.
4. Remove — Unplug the low-voltage and line-voltage connectors, release the board standoffs, and lift the old board out.
5. Install — Snap the new board onto the standoffs, transfer any jumper/DIP settings, and reconnect every harness exactly as photographed.
6. Test — Restore power and confirm thermostat response, blower, compressor, and defrost operation.

Signs You Need a Replacement

• System unresponsive to thermostat calls for heat or cool
• Compressor or blower will not energize despite a good 24V signal
• Erratic or continuous defrost cycling
• Visible burn marks, blown traces, or repeatedly blown control fuses

Shipping & Returns

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