ICP Defrost Control Board for YK030GC2 — Heat Pump | Ships Today

Overview

This genuine OEM defrost control board (part number 34332101) for the ICP/Heil/Tempstar YK030GC2 manages the heat pump's defrost cycle. The board monitors coil temperature and run time, then energizes the reversing valve and fan circuit to clear frost from the outdoor coil during heating operation. When the defrost board fails, the outdoor coil ices over, heating capacity drops, the reversing valve may not switch on schedule, or the unit can short-cycle. Replacing a failed board restores proper defrost timing and protects compressor and coil efficiency.

Specifications

Compatibility

Built for the ICP/Heil/Tempstar YK030GC2 heat pump and related family models that use this defrost control board. Match the OEM part number and connector layout to your existing board before ordering.

Installation Guide

1. Safety First — Disconnect power at the disconnect and breaker; verify zero voltage with a multimeter.
2. Access — Remove the control panel to reach the board.
3. Document — Photo every plug and wire on the board before disconnecting.
4. Remove — Unplug the harnesses, release the board standoffs, and lift out the old board.
5. Install — Seat the new board on the standoffs and reconnect each harness per your photo.
6. Test — Restore power, initiate a defrost call, and verify the reversing valve and fan respond correctly.

Signs You Need a Replacement

• Outdoor coil freezes over in heating mode
• Defrost cycle never initiates or runs too long
• Reversing valve fails to switch on schedule
• Unit short-cycles or loses heating capacity

Shipping & Returns

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