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Error code · Refrigerator

Liebherr Monolith Message “Door Open Alarm”: door open longer than 180 seconds

On Liebherr Monolith MRB, MF and MCB columns such as the MRB 3000, MF 3051 and MCB 3050, the panel reads "Door Open Alarm" rather than PLEASE CLOSE DOOR. It sounds when a door has stood…

Low risk · DIY check OK
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Code
PLEASE CLOSE DOOR
Appliance
Refrigerator
Brand
Liebherr
Warranty
30-day workmanship

What PLEASE CLOSE DOOR means

On Liebherr Monolith MRB, MF and MCB columns such as the MRB 3000, MF 3051 and MCB 3050, the panel reads "Door Open Alarm" rather than PLEASE CLOSE DOOR. It sounds when a door has stood open for more than about 180 seconds. Older HC and CBS units use a shorter 60-second audible alarm. Closing the door ends the alarm.

Common causes of PLEASE CLOSE DOOR

  • A door left open while loading or cleaning
  • An item in the way that stops the door closing
  • A door seal or hinge that keeps the door from latching
  • A door sensor that misreports an open door
✓ One safe check you can try

1. Close the door firmly and check it latches. 2. Remove anything sticking out from shelves or the door bins. 3. Wipe the gasket and look for folds or tears. 4. If the alarm sounds with the door shut, call us.

! Why to stop there
  • A door that will not latch lets warm air in and wastes energy.
  • A sensor that reports the wrong state needs a technician.
  • Hinge or seal work on a built-in column is easy to get wrong.
Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.
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Other Refrigerator codes

IceMaker failure / Ice Maker AlarmLiebherr Monolith Message "IceMaker is off": ice production stopped until serviced no displayLiebherr US Code no display: a blank screen starts with power checks PartyModeLiebherr Monolith Code PartyMode: maximum cooling for a big load of cold items POWER FAILURELiebherr Monolith Message "Power Alarm": power was interrupted Alarm LED / flashing displayLiebherr NoFrost Code Alarm LED / flashing display: temperature climbing too high Power failure LEDLiebherr NoFrost Code Power failure LED: freezer got too warm in an outage CHECK WATER SUPPLYLiebherr Monolith Message "Water alarm": the shut-off valve needs opening Sabbath modeLiebherr NoFrost Code Sabbath mode: lights and alarms switched off by design
PLEASE CLOSE DOORPLEASE CLOSE DOOR questions
What is the Door Open Alarm on my MF 3051?

It warns that a door has been open longer than about 180 seconds. Close the door and the alarm stops. It protects food by flagging air that is leaking in.

The door looks closed and the alarm still goes. Why?

Check for something holding it slightly ajar, or a seal that is not seating. Clear shelf items, wipe the gasket and push the door shut. If it persists, a technician checks the latch and sensor.

Is the interval the same on older units?

No. Older HC and CBS models sound a 60-second audible alarm, while the Monolith waits about 180 seconds. The reaction is the same: close the door.

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Still unsure about PLEASE CLOSE DOOR?

A technician diagnoses it on site and gives you the price in writing before any work starts.

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