ICP Defrost Control Board for YG030GB1 — Heat Pump Timer Board | Ships Today

Overview

This OEM defrost control board (Part #1069364) is the brain of the defrost cycle on your ICP heat pump. It monitors outdoor coil temperature and run time, then initiates and terminates the defrost cycle to clear frost and ice from the outdoor coil during heating mode. When this 24V board fails, the unit may stay locked in defrost, never defrost at all (leading to a coil packed with ice), short-cycle, or fail to switch between heating and cooling. Common failure signs include a frozen outdoor unit, the reversing valve not energizing, blown low-voltage fuses, or no response from the thermostat. Replacing the defrost control board restores reliable, efficient heat-pump operation.

Specifications

Compatibility

This board is the factory replacement for ICP-family heat pumps including model YG030GB1, and is shared across many Tempstar, Heil, and Comfortmaker outdoor units of the same series. Always confirm your existing board's part number (1069364) before ordering.

Installation Guide

1. Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter.
2. Access — Remove the outdoor unit's electrical/service panel.
3. Document — Photograph all wire connections and terminal positions before disconnecting anything.
4. Remove — Label and unplug each connector, remove the mounting screws/standoffs, and lift out the old board.
5. Install — Mount the new board on the same standoffs and reconnect every wire exactly per your photo.
6. Test — Restore power and verify heating, cooling, and a forced defrost cycle operate correctly.

Signs You Need a Replacement

• Outdoor coil ices over and never defrosts.
• Unit stays stuck in defrost mode continuously.
• Reversing valve fails to switch between heat and cool.
• Repeatedly blown 24V control fuses or no thermostat response.

Shipping & Returns

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