ICP Control Board Kit for RHS150S0BA0AAAA — OEM Defrost Board | Ships Today

Overview

This genuine OEM control board kit (part number 1183618) is the main control for the ICP Tempstar Heil RHS150S0BA0AAAA heat pump. The board manages the defrost cycle, sequences the compressor contactor and reversing valve, monitors the defrost thermostat and timing, and protects the system with anti-short-cycle delays. A failed board is a frequent cause of a heat pump that won't run, won't defrost, or locks into a single mode. Symptoms include no operation in heat or cool, ice build-up on the outdoor coil from a missed defrost cycle, the unit not responding to thermostat calls, or visible burn marks and failed relays on the board itself.

Specifications

Compatibility

Built for the ICP / Tempstar / Heil RHS150S0BA0AAAA heat pump and related R-series outdoor units using this control board kit. Also covers compatible Comfortmaker and Arcoaire heat pump variants sharing part number 1183618.

Installation Guide

1. Safety First — Disconnect power at the disconnect and verify zero voltage with a multimeter.
2. Access — Remove the control-box service panel to expose the board.
3. Document — Photo every connector and wire location on the existing board before removal.
4. Remove — Unplug the harness connectors, release the standoffs or screws, and lift out the old board.
5. Install — Mount the new board on the standoffs and reconnect each harness exactly per your photo.
6. Test — Restore power, run a heat and cool call, and confirm proper sequencing and a normal defrost cycle.

Signs You Need a Replacement

• Heat pump won't run in heat or cool
• Outdoor coil icing from missed defrost cycles
• No response to thermostat calls
• Burn marks or failed relays on the board

Shipping & Returns

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