ICP Defrost Control Board for YG036GC1 — Heat Pump Timer Board | Ships Today

Overview

The defrost control board (OEM part number 34332101) governs the defrost cycle on your ICP/Tempstar/Heil YG036GC1 heat pump. It tracks coil temperature and elapsed run time, then commands the reversing valve and outdoor fan to melt frost and ice from the outdoor coil so the unit can keep heating efficiently in cold weather. A defective defrost board commonly shows up as an outdoor coil that ices over, a unit that short cycles, or a loss of heating. This genuine OEM replacement is built to the original specification for correct defrost timing and dependable system communication.

Specifications

Compatibility

Direct-fit replacement for the ICP/Tempstar/Heil YG036GC1 heat pump. The 34332101 board is used across multiple ICP-family condensing units of this generation — match your old board's part number to 34332101 to confirm fitment before installing.

Installation Guide

1. Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter at the board.
2. Access — Remove the outdoor unit's control-panel service cover.
3. Document — Photograph every wire and connector on the old board before disconnecting.
4. Remove — Label and unplug all connectors, release the mounting hardware, and lift out the failed board.
5. Install — Seat the new board on the standoffs and reconnect each wire exactly as photographed.
6. Test — Restore power and verify normal operation; initiate a defrost cycle to confirm reversing-valve and fan response.

Signs You Need a Replacement

• Outdoor coil ices over and never clears in heat mode
• Heat pump short cycles or won't enter/exit defrost
• Reversing valve or outdoor fan won't actuate on schedule
• Visible scorching, corrosion, or a cracked board

Shipping & Returns

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