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The Goodman 10135604 is a genuine OEM control relay for Goodman DBC3003SAA air conditioning systems. This electromechanical relay uses a low-voltage control signal to switch a higher-voltage load circuit — energizing components such as the fan or compressor contactor coil on command from the thermostat or control board. A failed relay typically presents as a component that won't start, intermittent operation, or chattering, and is a common, low-cost fix for no-cooling and no-fan complaints.
The genuine OEM 10135604 matches the exact coil voltage, contact rating, and terminal layout of your unit, so it drops in without rewiring. Generic relays may differ in pinout or contact rating, risking miswiring or premature contact burn-out under HVAC inrush loads. OEM guarantees correct electrical specs and fit.
Disconnect power at the breaker and confirm zero voltage. Photograph the wiring, transfer each spade connector to the matching terminal on the new relay one at a time to avoid errors, and secure it in the OEM location. A multimeter is recommended to confirm coil and contact operation after install.