ICP Control Board Kit for RHS183S0BA0AAAA — OEM Defrost/Control Board | Ships Today

Overview

This OEM control board kit (part 1183618) is the brain of the ICP RHS183S0BA0AAAA heat pump, managing defrost timing, compressor and fan staging, and the safety interlocks that protect the system. The kit ships with the board and the hardware needed for a clean replacement. A failed control board typically shows up as a system that won't run, erratic or constant defrost cycles, no outdoor fan operation, or blinking diagnostic fault codes. Because the board coordinates every major component, replacing a marginal one restores reliable, efficient operation.

Specifications

Compatibility

Built for the ICP/Tempstar/Heil RHS183S0BA0AAAA heat pump and related ICP-family units calling for kit 1183618. Match the OEM part number on your existing board before ordering, as control boards are model-specific.

Installation Guide

1. Safety First — Disconnect power and verify zero voltage with a multimeter.
2. Access — Remove the control-compartment service panel.
3. Document — Photograph every plug and terminal on the existing board.
4. Remove — Unplug each harness, release the board standoffs, and lift out the old board.
5. Install — Mount the new board on the standoffs and reconnect every harness exactly per your photo.
6. Test — Restore power, watch for a normal startup sequence, and confirm no fault codes.

Signs You Need a Replacement

• System won't start or randomly shuts down
• Erratic, constant, or absent defrost cycles
• Outdoor fan or compressor won't energize
• Blinking diagnostic LED fault codes

Shipping & Returns

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