B medical systems MRB 3000 SDD, Instructions For Use Manual

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5.2 Alarm messages
• In case of an alarm, all display areas start flashing and the related alarm code is shown in the display.
Furthermore the red Alarm LED on the display blinks and the buzzer sounds. The buzzer sound can be
muted by pressing the Mute button on the display. When the muting time is elapsed or a new alarm
situation comes up, the buzzer starts again.
• Temperature alarm - E0.1 / E0.2
If the internal temperature rises above the upper alarm limit or falls below the low alarm limit a
temperature alarm „E0.1“ or „E0.2“ is created. The temperature alarm persists even if the temperature is
in range again. It needs to be acknowledged by pressing and holding the reset button for 3 seconds. The
alarm situation is also cleared when switching the unit off and on again.
• Temperature reading error - E1.1 / E1.2 / E1.3 / E2.1 / E2.2 / E2.3 / E3.1 / E3.2 / E3.3
When one of the temperature values for proper temperature regulation or temperature display is not
available because of a reading error, the appropriate temperature sensor reading alarm is generated. The
fault can be a short circuit, an open circuit or an invalid resistor value on the reading input. The alarm
message E2 and E3 for heating and cooling sensor errors will disappear as soon as the alarm situation is
cleared. In case of a reading error on the sensor for the display temperature (E1), the alarm situation can
only be cleared by holding the reset button for 3 seconds.
• Battery failure / not connected - E4.1 / E4.2
As the battery is necessary for the correct daily use of the SDD unit, its presence is mandatory. When it
is not connected an alarm is created. When it is damaged (detected by a low voltage on the poles) another
alarm is created.
• Communication error - E9.0
When the communication between mainboard and display board is interrupted or the exchanged data is
inconsistent, the display board emits an alarm. The alarm disappears as soon as the communication is re-
established.
• Parameter inconsistency - E9.1 / Flash memory inconsistency - E9.2
A check of parameters and memory is done every time the unit is switched on. If anything goes wrong
during this check, an alarm is created.
5.3 Warning messages
• In case of a warning the related message is shown on max area of the display. The LED is not turned on.
Warnings are not displayed in case an alarm is active.
• Temperature alarm disabled - E0.3
The warning message „E0.3“ will be displayed in the max area of the display until the temperature has
once reached the preset range of +2°C to +6°C. During this startup phase the temperature alarm system
is deactivated.
• Temperature reading limit - E1.4 / E1.5 / E2.4 / E2.5 / E3.4 / E3.5
When the temperature value read on one sensor is outside the temperature reading range of -30.0 °C
to +50.0 °C, a warning is displayed. The message disappears as soon as the read value is in range
again.
• Compressor start error - E5.3
The compressor cannot start. Keep the unit switched on. This problem might occur if the solar generator
doesn’t deliver enough power (cloudy day, shadow on solar panels, bad positioning of solar panels etc.).
Check the actual situation of the panels, and if the problem persists after corrective actions, notify
Refrigerator Technician.