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17
ALARMS AND SAFETY FUNCTIONS
This unit has the alarm and safety functions shown in Table 5, and also a self diagnostic function.
Table 5 Alarms and safety functions
Kind of alarm
or safety
Situation Indication Buzzer Safety operation
• Refrigerator
If the chamber temperature
exceeds the set temperature.
High
temperature
alarm
• Freezer
If the chamber temperature
exceeds the set temperature.
Alarm lamp flashes.
All digits on the temperature
display flash.
Intermittent tone
after a delay of 15
minutes.
Remote alarm is
activated after a
delay of 15 minutes.
Over-heat
protector
• Refrigerator
If the chamber temperature
exceeds 28
o
C.
----- -----
Defrost heater and
fan motor for
circulation turn OFF.
• Refrigerator
If the chamber temperature
is lower than the set
temperature or drops to 0
o
C
or lower.
Low
temperature
alarm
• Freezer
If the chamber temperature
is lower than the set
temperature.
Alarm lamp flashes.
All digits on the temperature
display flash.
Intermittent tone
after a delay of 15
minutes.
(No delay in the
case of 0
o
C or
lower)
Remote alarm is
activated after a
delay of 15 minutes.
(No delay in the
case of 0
o
C or
lower)
Over-cool
protector
• Freezer
If the chamber temperature
is equal or lower than 0
o
C.
----- -----
Refrigerator comp.
turns OFF.
Reset at about 6
o
C.
Power failure
alarm
In the event of a power
failure or disconnection of
power supply plug from the
outlet
----- -----
Remote alarm is
activated.
Door alarm When the door is open. Door check lamp is lit.
Intermittent tone
after a delay of 2
minutes.
-----
Auto return
If a key operation is not
performed for about 90
seconds in each setting
mode.
Chamber temperature is
displayed.
-----
Setting mode is
canceled.
Key lock
When the key lock is ON
(L1).
----- ----- Key input is unable.
If the thermal sensor of
refrigerator goes open (E01)
or short circuit (E02).
Alarm lamp flashes.
E01/02 and chamber temp.
are displayed alternately on the
temperature display.
Remote alarm is
activated.
Operation by the
defrost sensor.
If the freezer sensor of
refrigerator goes open (E03)
or short circuit (E04).
Alarm lamp flashes.
E03/04 and chamber temp.
are displayed alternately on the
temperature display.
Remote alarm is
activated.
Freezer will run
continuously .
Thermal sensor
abnormality
If the defrost sensor goes
Open (E05) or short circuit
(E06).
Alarm lamp flashes.
E05/06 and chamber temp.
are displayed alternately on the
temperature display.
Intermittent tone
Remote alarm is
activated.
Normal running.
Note:
The alarm can be canceled by pressing the alarm buzzer stop key (BUZZER), but the remote alarm cannot be
silenced.
When more than two alarm conditions occur simultaneously, the smaller number error code has priority on the
error display.
After a power failure, the unit will resume operation with the set value that was in place before power failure
occurred.