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14
OPERATING INSTRUCTIONS
Alarm and safety functions
This unit has the alarm and safety functions shown in Table 3, and also a self diagnostic function.
Kind of alarm
or safety
Situation Indication Buzzer Safety operation
High
temperature
alarm
Refrigerator
If the chamber temperature
deviates from the set
temperature +5
o
C or more.
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.
Freezer
If the chamber temperature
deviates from the set
temperature +10
o
C or more.
Low
temperature
alarm
Refrigerator
If the chamber temperature
drops to 0
o
C or lower.
Intermittent tone Remote alarm is
activated.
Freezer
If the chamber temperature
deviates from the set
temperature -10
o
C or lower.
Intermittent tone
after a delay of 15
minutes.
Remote alarm is
activated after a
delay of 15
minutes.
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 opened 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
disabled.
Thermal
sensor
abnormality
If the thermal sensor of
refrigerator goes open or
short circuit.
Alarm lamp flashes.
E1 and chamber temperature
are displayed alternately on the
temperature display.
Intermittent tone Remote alarm is
activated.
Operation by the
defrost sensor.
If the freezer sensor of
refrigerator goes open or
short circuit.
Alarm lamp flashes.
E2 and chamber temperature
are displayed alternately on the
temperature display.
Remote alarm is
activated.
Freezer will run
continuously .
If the defrost sensor goes
open or short circuit.
Alarm lamp flashes.
E3 and chamber temperature
are displayed alternately on the
temperature display.
Remote alarm is
activated.
Continuous
running.
Over-heat
protector
Refrigerator
If the chamber temperature
Is higher than 28
o
C.
----- ----- Heater and fan
motor OFF.
Note: The remote alarm can be canceled by pressing the alarm buzzer stop key (BZ) as it is activated in
conjunction with the buzzer (except power failure alarm).
When more than two alarm condition occur simultaneously, the lowest 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.