39
MONITOR OF FREEZER STATUS
This product has the operation monitor system shown in the table 14. It is the system to detect and
inform some hard operating conditions that leaving the unit operating may cause a failure. Operation
conditions are indicated in the display of status (Status) and the message column on the top screen.
Table 14. Operation monitor system (STATUS) list
Kind of function
Status Indication
If this status continues
Remedy
Notice of
abnormal
ambient
temperature
When the ambient
temp. is over
approx. 35
o
C
or lower than
about 0
o
C.
Display of status (STATUS):
"Status_1" is indicated.
Message column :
"Ambient temp is abnormal"
is indicated.
Decrease of cooling
performance or
durability of
refrigerating circuit.
Recheck air-
conditioning of
installed site.
Notice of low
voltage
When the power
source voltage is
less than approx.
195 V when the
rated voltage is
between 230 V
and 240 V.
Display of status (STATUS):
"Status_2" is indicated.
Message column :
"The power-supply is
abnormal" is indicated.
Abnormal heat at
power supply outlet
or degrade of starting
performance of
refrigerating circuit.
Use dedicated
power source.
The notice of
the overload
operation
When it did not
reach setup
temperature for
more than 5 days.
Display of status (STATUS):
"Status_3" is indicated.
Message column :
”Cooling circuits
Overload” is indicated.
A problem occurs in
the cooling
performance and the
durability of the
cooling circuit.
(1) Large quantities of
things are not put in the
chamber in a short time.
(2) It is checked
whether a door is not
opened for a long time
or there is no packing
defect of the outer door
and the inner door.
(3) Set the chamber
temperature to -80
o
C
or higher.
*:
Status indication and
message column
disappear when a
problem cleared it in the
above and reached
setup temperature.
Note:
• The operation monitor system is not the alarm function. Buzzer, remote alarm and safety operation are
not activated.
• When the operation monitor system informs 2 notices which occurs at same time, only the notice of
smaller status number is indicated in the display of status. Perform its remedy.
• The compressor is not a trouble though operation is suspended temporarily if a power supply voltage
decreases rapidly. Operation is resumed automatically when a power supply voltage is returned
normally.
