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The Goodman 10135604 is a genuine OEM relay engineered for the ASH130301AC heat pump and compatible Goodman/Amana condensing units. This relay handles the low-voltage switching that controls higher-current components in the outdoor unit, keeping defrost, fan, and compressor circuits operating on cue. A failing relay is a common cause of a unit that won't start, hums without engaging, or fails to switch out of defrost.
This is the genuine OEM relay, built to the exact contact rating, coil voltage, and terminal layout Goodman specified for this platform — a true plug-in match with no rewiring. Universal aftermarket relays may carry a similar rating but often differ in terminal position and mounting, forcing splices that void warranties and create failure points. For a dependable, code-clean repair, the OEM part is the right call.
Easy (2/5). A typical swap takes 15–20 minutes with basic hand tools. Always disconnect power at the disconnect and breaker before servicing. Photograph the wiring, transfer leads one at a time to the matching terminals, and verify seating. Diagnosis with a multimeter is recommended — if you are not comfortable working around live 240V equipment, hire a licensed HVAC technician.