Operation Manual

9
GB
These variations will not affect the food
products and the temperature will quickly
return to the set-point level.
When the door of the freezer’s chamber
is open for more than 2 minutes the
display will show E4 alarm and the
acoustic alarm will be activated.
Alarm codes
E2 – temperature sensor fault in the
freezer’s chamber
E4 – door is open
E5 – too high temperature inside the
freezer’s chamber
E6 – too high temperature after the
power failure
E2
The temperature sensors has been
damaged. Call technical service. The
built-in emergency program maintains
the admissible temperature until the fault
will be eliminated by the authorized
technical service.
E4
The door of the freezer’s chamber has
been opened for more than 2 minutes.
The alarm code disappears when the
door is closed.
E5
The temperature inside the freezer’s
chamber has been exceeding the set
temperature for more than 2 hours.
E6
There has been the power supply failure.
The power supply has been
disconnected from the freezer and the
temperature inside the freezer’s
chamber is too high.
Interrupting an alarm
The acoustic alarm can always be
interrupted by opening the door and/or
pressing any push-button.
The alarm code E3 - E6 can be cancelled by
pressing for 7-8 seconds at the same time
the push-buttons (7) and (8).
The exception: in case of the alarm E1 it
is possible to cancel the alarm only after
replacing damaged sensors.
In case the display shows symbols E5 or
E6, it is possible to monitor the maximum
temperature recorded by the control
system by pressing the buttons 9 and/or
10. If the alarm is caused by a more
permanent defect the alarm code will
appear again but without the acoustic alarm.
In such cases please contact Gram Service
Center.
Display brightness adjustment
By pressing and holding the pushbutton
(9) and
- pressing at the same time the
pushbutton (7), the display
brightness increases,
- pressing at the same time the
pushbutton
(8), the display brightness
decreases.
When adjusting the display brightness,
the display shows the following
indications:
1.8 – minimum brightness
2.8 – medium brightness
3.8 – maximum brightness
(manufacturer’s setting).
Alarms
Normal use of the freezer may cause
different situations leading to interruption
of various functions and unstable
operation of the entire equipment as a
consequence. These interruptions are
shown on the display as the alarm code
(an E followed by a number) and
signalled by the acoustic alarm.
In case there will be several faults the
alarm codes shall be displayed in turn.
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