Dometic MDD 403 - Troubleshooting Guide

EN
Troubleshooting MDD403
26
11 Troubleshooting
If you are unable to rectify the fault, get in touch with a specialist workshop.
End of SD card transfer DSDXX 3 short beeps
Wait when opening with R.E.O.S.
code
DELAY
Repeat R.E.O.S. code REPEAT
Safe blocked due to back cover
secured with anti-tamper code
A-001 3 short beeps
Safe blocked due to use of
mechanical key with anti-tamper
code
A-002 3 short beeps
Safe blocked 3 short beeps
Wait when opening with anti-
tamper code
DELAY
Repeat anti-tamper code DELAY 1 short beep
Code requested CODE
Display Fault Possible cause Suggested remedy
BAT-LO The safe does not
close.
The battery is low. ➤ Replace the batteries.
ERROR A continuous audible
signal sounds.
False code ➤ Enter the correct code.
Time for entering code
has elapsed.
➤ Enter the code within
8 seconds.
The safe will not accept
the master code.
Wrong master code ➤ Enter the correct master
code.
ERROR 2 The bolts do not
extend completely.
The locking
mechanism is not
functioning correctly.
➤ Make sure the bolts are
not jammed in the
cupboard.
➤ Check the connections
on the circuit board.
➤ Replace the motor.
Display Sound
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