6
Essential Series
Ex a m pl e
YDME - 50
Solutions for Common Error
Phenomenon SolutionCause
Four very short beeps sound
when opening the door
No response when pressing
the keypad
Low battery voltage Change the batteries
Change the batteriesNo battery
Fail to enter the enrollment
or deletion mode
Two beeps sound when
enrolling a DIY card user
The card was once
registered
Change an empty card
to register
l. The code for
enrollment or deletion
is not the master code
2. The operational
procedure is incorrect
l.Confirm that you enroll
or delete with the
master code
2. Review the
instructions
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