ICP Defrost Control Board for YJ024GA3 — Heat Pump | Ships Today

Overview

This OEM defrost control board (part number 1069364) is the brain of the defrost cycle on your ICP YJ024GA3 heat pump. In heating mode the board monitors the defrost thermostat and run time, then periodically reverses the valve and shuts off the outdoor fan to melt frost off the coil before returning to normal heating. A failed defrost board is a frequent cause of an outdoor coil icing over, a unit that never defrosts, or one that defrosts far too often and short-cycles. The board also coordinates the contactor, reversing valve coil, and fan, so a fault here can cascade into apparent compressor or airflow problems.

Specifications

Compatibility

Designed for the ICP YJ024GA3 heat pump and compatible ICP-family (Heil, Tempstar, Comfortmaker) outdoor units. Match the board's part number and connector layout to your existing board before ordering.

Installation Guide

1. Safety First — Disconnect power and verify zero voltage with a multimeter.
2. Access — Remove the condenser service panel to reach the control box.
3. Document — Photo every connector and wire position before disconnecting.
4. Remove — Unplug the harness connectors, remove the board's mounting screws or standoffs, and lift out the old board.
5. Install — Mount the new board, reconnect each harness exactly per your photo, and set any defrost-timing jumper to match the original.
6. Test — Restore power, run a heat call, and confirm normal operation and a proper defrost cycle.

Signs You Need a Replacement

• Outdoor coil ices over and never defrosts
• Unit defrosts too frequently or short-cycles in heat
• No reversing-valve shift or fan shutdown during defrost
• Visible burnt traces, scorched relays, or no board LED activity

Shipping & Returns

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