Topics:

• Error code dO Or
• The word door appears on the control panel
• 648PRO with do or or door on display
• Alarm chiming on 648PRO when door alarm is turned off
• 648PRO door alarm do0r error

Answer:

The door alarm (dO Or) feature was added to 648PRO at the end of 2015.

• The feature may have also been added to the unit during a service visit.
• The "do or" alarm will not display when the door is left ajar and unit is in Sabbath mode.

When dO Or is activated:

• The unit will start to chime and flash "dO Or" on the control panel if the door is left open longer than five minutes.
  • The feature cannot be turned off.
  • The "dO Or" feature will activate even with the door ajar alarm turned off.
  • Closing the door will reset the alarm.
  • After the door is closed, the control panel will not respond for five minutes.
  • After five minutes, the unit will operate normally.
• The standard door alarm starts to chime after the door is open 30 seconds and can be turned off.

See also:

• 648PRO Professional Refrigeration Door Ajar Alarm
• PRO3650 and PRO4850 Refrigeration Door and Drawer Alarm

Refer to the product Use and Care Guide for further information.