Garage door opener trips the circuit breaker or GFCI when operated on Overhead Door opener

Safety first: Do not repeatedly reset a tripping breaker. This indicates a potentially dangerous fault.

• 1. Unplug opener and reset breaker: If the breaker holds with the opener unplugged, the fault is in the opener or its wiring.
• 2. Inspect power cord: Check for cuts, crushed sections, or exposed conductors. Replace the cord if damaged.
• 3. Remove light bulbs: Take out the opener light bulbs and test operation. A shorted bulb or socket can trip a breaker.
• 4. Check for moisture: Look for signs of water inside the opener housing. If present, allow to dry completely and correct the source of leaks.
• 5. Test motor and board: If the breaker still trips when the opener is plugged in and activated, the motor or internal wiring is likely shorted. Replace the motor assembly or entire opener.