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The Goodman PCBDM101S Defrost Control Board is the genuine OEM circuit board that manages the defrost cycle on the ASH130361AC 3-ton, 13 SEER heat pump. When outdoor coil frost is detected, this board coordinates the reversing valve, outdoor fan, and compressor timing to clear ice and return the system to heating — protecting the compressor and keeping efficiency where it belongs.
A failing defrost board is a common cause of a heat pump that ices over, blows cold air in heat mode, or short-cycles. Installing the factory board restores the exact timing logic and terminal layout the unit was engineered around.
Our OEM PCBDM101S is the exact Goodman-specified board with matching connectors, defrost intervals, and diagnostic behavior — plug-and-play with no rewiring. Aftermarket "universal" defrost boards can require adapter harnesses and manual timing setup, and may not replicate Goodman's fault logic. For a heat pump, we strongly recommend OEM to guarantee correct defrost performance.
Moderate — roughly 30–45 minutes for an HVAC technician. Requires disconnecting power at the breaker, photographing and transferring low- and line-voltage connections one at a time, and confirming defrost jumper settings. Because line voltage is present, installation should be performed by a qualified technician.