ICP Defrost Control Board for WCH5244GKA200 — Heat Pump Timer Board | Ships Today

Overview

This OEM defrost control board (part number 1173636) is the brain of the defrost cycle on your ICP / Heil / Tempstar WCH5244GKA200 heat pump. It monitors coil temperature and run time, then commands the unit into and out of defrost so frost and ice cannot accumulate on the outdoor coil during heating operation. The board manages the reversing valve, the compressor contactor, the outdoor fan, and the auxiliary heat hand-off. When a defrost board fails, the system can ice over completely, short-cycle, run continuous defrost, or fail to switch between heating and cooling. This is the correct factory-specification replacement, ensuring proper 24V control logic and timing for your unit.

Specifications

Compatibility

Engineered for the ICP / Heil / Tempstar WCH5244GKA200 heat pump and other ICP-family condensing units that originally shipped with defrost control board 1173636. Always confirm your old board's part number against the new one before installing.

Installation Guide

1. Safety First — Disconnect power at the outdoor disconnect and verify zero voltage with a multimeter.
2. Access — Remove the unit's electrical service panel.
3. Document — Photograph every wire and terminal on the existing board before disconnecting.
4. Remove — Label and unplug the low-voltage and line connections, then unscrew the old board from its standoffs.
5. Install — Mount the new board on the same standoffs and reconnect every wire exactly per your photo.
6. Test — Restore power and verify a heating call, then force or observe a clean defrost cycle.

Signs You Need a Replacement

• Outdoor coil ices over and never clears in heating mode
• Unit stuck in continuous defrost or never enters defrost
• Reversing valve or contactor not energizing on schedule
• No 24V output to controlled components despite a valid call

Shipping & Returns

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