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The Goodman PCBDM101S is a genuine OEM defrost control board that governs the defrost cycle on your heat pump — monitoring coil temperature and run time, energizing the reversing valve, and cycling the outdoor fan and auxiliary heat to clear frost from the outdoor coil. It is a direct-fit replacement for ASH130361AD and compatible Goodman/Amana heat pump condensers. Symptoms of a failed board include the unit not defrosting, iced-over coils, no outdoor fan, or the system failing to switch between heat and cool.
The genuine OEM board is pre-programmed with the correct defrost timing intervals and relay logic for your unit, with matching terminal layout for plug-and-play wiring. Universal aftermarket boards exist but require jumper configuration and rewiring, and may not replicate factory defrost behavior. For correct operation and warranty coverage, OEM is the safe choice.
Moderate (45–60 min). Photograph the existing wiring, cut power at the disconnect, transfer connections one at a time to the new board, and remount. No refrigerant work is involved, but working with 24V control and line-voltage relays calls for basic electrical care.
Verify your model before ordering. Support: info@nationalhvacparts.com.