Guardian opener beeps or flashes seven times and will not run, or stops mid-travel and shows code “7”.

Safety first: Turn off power at the breaker before opening the opener housing. If you are not comfortable working with mains voltage, contact a professional.

• Check outlet and breaker: Verify the outlet has proper voltage using a plug-in tester or multimeter (typically 120V AC in North America). Reset any tripped breaker or GFCI.
• Inspect power cord: Check the Guardian opener power cord for cuts, burns, or loose plug blades. Replace the opener or cord if damaged.
• Open housing: Remove the opener cover and inspect the logic board for burnt components, bulging capacitors, or scorch marks.
• Disconnect accessories: Temporarily disconnect wall console, keyless entry, and any add-on modules from the logic board terminals. Restore power and see if the error clears.
• Replace logic board: If proper line voltage is present and the error persists with accessories disconnected, the internal power supply on the Guardian logic board is likely faulty. Replace the logic board with the exact Guardian model match.