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The Goodman PCBDM101S Defrost Control Board is the genuine OEM replacement board for the ASH130481AC 13 SEER, 4-ton heat pump. This board manages the defrost cycle by monitoring coil temperature and run time, energizing the reversing valve and outdoor fan relay to clear frost from the outdoor coil during cold-weather operation. A failing defrost board is the most common cause of an outdoor unit that ices over, short-cycles, or won't switch between heat and cool modes.
This is a factory-original Goodman board, pre-programmed with the correct defrost timing and relay logic for your unit — unlike generic universal boards that require field jumpers and manual configuration. Choosing OEM guarantees plug-and-play terminal layout and protects your manufacturer warranty.
Moderate — Requires disconnecting power at the breaker, photographing the existing low-voltage and line-voltage wiring, and transferring connections terminal-for-terminal. Most experienced DIYers complete the swap in 30–45 minutes. If you're unsure about wiring, we recommend a licensed HVAC technician.