The door does not open even after entering the PIN, Sensor malfunction due to ALPHA ed-Lock control board failure

"It does not respond even if I enter the password many times"

He changed his PIN this morning, and after confirming it several times, he locked the door and went out. After returning home, it seems that even if he enter the PIN, it will not respond. It did not respond even with the PIN code before the change.

Upon arrival and checking, the exterior is considerably corroded. The area around the battery cover is also white and corroded. Deterioration (corrosion) due to salt damage is probably progressing.

The digital numeric keypad itself responds, but there is no unlocking motor sound. The push sound of the numeric keypad is ringing. Moreover, even if you enter a different PIN number before changing it, there will be no error sound or flashing.

The area around the battery cover was white and corroded, but the battery is working normally. I removed the cover with an improved tool and checked the battery for confirmation, but it could not be improved.

I also checked the thumbturn through the doorpost and it had a large thumbturn cover. The thumbturn was a LA type standard thumbturn. It can be unlocked with a special unlock, but it is a defect symptom that requires replacement of the ed-Lock main unit. Even with special unlocking, if the main unit does not operate, it cannot be locked when going out, and there is no replacement ed-Lock. I could install a standard U9.LA cylinder, but I can't do this because the client insists I'm not obligated to pay for it.

When locked, the motor moves and the lock is physically applied, but it is considered that the sensor does not detect that it is in the locked state. It is thought that the electronic lock itself recognizes that it is in the unlocked state.

The client also said that the operation was unstable. It is certain that the sensor abnormality is caused by the salt corrosion of the control board.

As for the payment issue, since it was a rental property, we need to confirm permission from the landlord via the management company, but today is a holiday and we cannot contact you. Unfortunately, I decided to leave without doing anything.

However, recently there are many cases of defective control boards of ed-Lock.