• Maxi-Cool SA

Common Danfoss Controller Display Alarms


 

1. “CON” Alarm:


  • This is a condenser alarm.

  • This will be displayed when the condenser is not getting enough airflow over it.

  • Possible reasons as to what the cause for this is:

  • Condenser is blocked.

  • Condenser fan motor is not working or is stuck.

  • High ambient temperatures of +45°C.

  • There is an obstruction in front of the grill of the cabinet.


2. “ULO” Alarm:

  • This is a low voltage alarm.

  • This will be displayed when the incoming voltage to the cabinet is lower than 195V.

  • The cabinet will cut to the voltage protection, to help protect the cabinet from any damages.

  • Possible reasons as to what the cause for this is:

  • Cabinet is plugged into a multiplug or via an extension cable.

  • Cabinets is being powered by a generator.

  • Eskom are working on the power in the area.


3. “DOR” Alarm:

  • This is a door alarm.

  • This will be displayed when the cabinets door has been left open for more than one minute.

  • Possible reasons as to what the cause for this is:

  • Cabinet door is not closing fully.

  • The door sensor is faulty or not making the necessary contact.

  • The door sensor has been damaged or is faulty.


4. “E01/02/03” Alarm:

  • This is a sensor alarm.

  • This will be displayed when the controller cannot make contact with one of the probes.

  • The controller will display either “E01”, “E02” or “E03”.

  • Possible reasons as to what the cause for this is:

  • The probe has disconnected from the controller.

  • The probe is faulty, been cut or damaged.



Should you need any assistance,

please feel free to contact us.