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The Goodman 10135604 Relay is the genuine OEM control relay for WGHP4436AAF condensing units. The relay takes a low-voltage signal from the control board or thermostat and switches the higher-current load it controls, energizing the circuit on a call for cooling or heating. A relay with pitted contacts, a weak coil, or chatter will cause intermittent operation, no-starts, or buzzing at the control panel — symptoms this exact-fit replacement resolves.
This genuine Goodman relay matches the coil voltage, contact rating, and terminal layout the WGHP4436AAF board expects. Generic relays may carry a similar contact rating but differ in coil voltage or pin arrangement, leading to miswiring or early contact failure under the unit's inrush load. OEM drops in without adapters.
Moderate — basic electrical experience required. Disconnect power at the breaker, photograph and transfer the wiring one terminal at a time, and confirm seating. A multimeter is recommended to verify coil and contact operation after install. If you are not comfortable working in an energized control panel, hire a technician.