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Error code reference

Bosch Refrigerator Error Code AL

Temperature alarm

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What the AL error code actually means

The AL alarm means your Bosch refrigerator detected that one of its compartments got too warm, warm enough that food safety could be at risk. Press the alarm or lock button to silence it, and the display will briefly show the highest temperature that was reached. If temperatures return to normal on their own and food is still cold, a simple event like a door being left open may have been the cause, but if the problem repeats you should investigate further.

Diagnostic procedure

The full AL procedure

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MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Touch the alarm/lock button to release the warning signal; display shows warmest temperature reached for 10 seconds.
More steps, wiring diagram references, and verified part numbers
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Most common causes of AL

Ranked by how often they cause this code
  1. 1Door left open or not fully closed
  2. 2Worn or damaged door gasket
  3. 3Large load of warm food recently added
  4. 4Evaporator fan failure or restricted airflow
  5. 5Faulty temperature sensor or thermistor

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Questions people ask about AL

What does AL mean on a Bosch refrigerator?
AL is a temperature alarm indicating that the Freezer Compartment rose above -1°C (34°F), the Refrigerator Compartment rose above 18°C (64.5°F), or the Temperature Controlled Drawer rose above 35°C (95°F). Press the alarm or lock button to silence the alert. The display will then show the peak temperature reached for about 10 seconds, helping you gauge how serious the event was.
How do I fix the AL error on my Bosch refrigerator?
Start by pressing the alarm button to silence the alert and note the peak temperature shown. Check that all doors are fully closed and that the gaskets are sealing properly. Make sure the unit is not overloaded with warm food and that airflow inside is not blocked. If the alarm returns repeatedly and temperatures do not recover, inspect the evaporator fan for operation and consider testing the temperature sensors, as a failed component will require replacement.
How much does it cost to repair a Bosch refrigerator showing an AL error?
Repair costs vary widely depending on the root cause. A replacement door gasket typically runs in the range of $30 to $100 for the part, while professional labor to diagnose and replace a faulty evaporator fan or thermistor can bring the total repair into the $150 to $400 range. If the refrigerant system is involved, costs can be higher. Starting with the free checks, such as door alignment and airflow, before calling a technician can help avoid unnecessary service calls.
Will resetting the alarm clear the AL code on a Bosch refrigerator?
Pressing the alarm or lock button silences the audible signal and clears the display, but it does not fix the underlying cause. If the compartment temperature has already returned to the normal range and no mechanical issue exists, the alarm will not return. However, if a component such as a door gasket or fan is failing, the AL code will reappear once temperatures climb above the threshold again.
Is the AL alarm on a Bosch refrigerator a food safety concern?
It can be, depending on how high the temperature climbed and how long it stayed elevated. The alarm thresholds are set to warn you before temperatures reach levels that are immediately dangerous, but food kept above safe storage temperatures for extended periods should be evaluated carefully. If the Refrigerator Compartment reached significantly above 4°C (40°F) for more than two hours, perishable items like meat, dairy, and prepared foods may need to be discarded.

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