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ALARMS & SAFETY FUNCTIONS
This unit has the alarms and safety functions shown in Table 7, and also self diagnostic functions.
Table 7 Alarms and safety functions
Alarm & Safety Situation Indication Buzzer Safety operation
High temperature
alarm
If the chamber temperature is higher
than the temperature at which the
high temperature alarm is activated.
Alarm lamp is flashed.
Temperature indicator is
flashed.
Intermittent tone
with 15 minutes
delay.
Remote alarm with
15 minutes delay.
Low temperature
alarm
If the chamber temperature is lower
than the temperature at which the
low temperature alarm is activated.
Alarm lamp is flashed.
Temperature indicator is
flashed.
Intermittent tone
with 15 minutes
delay.
Remote alarm with
15 minutes delay.
Power failure
alarm
In the case of power failure.
When the power cord is
disconnected.
Alarm lamp is flashed. Intermittent tone Remote alarm.
Battery check
When approx. 2.8 years has passed
with the power cord connected to
the outlet.
Battery check lamp lights. ----- -----
If the thermal sensor is
disconnected..
Alarm lamp is flashed.
E01 and chamber temp.
are displayed alternately.
If the thermal sensor is
short-circuited
Alarm lamp is flashed.
E02 and chamber temp.
are displayed alternately.
Intermittent tone Remote alarm.
If the thermal sensor of the
compressor is disconnected.
Alarm lamp is flashed.
E05 and chamber temp.
are displayed alternately.
Sensor
abnormality
If the thermal sensor of the
compressor is short-circuited
Alarm lamp is flashed.
E06 and chamber temp.
are displayed alternately.
Intermittent tone Remote alarm.
Battery switch
check
When battery switch is OFF at
the time of alarm test.
Alarm lamp is flashed.
E09 is flashed.
----- -----
Condenser temp.
abnormality
In the event of failure of fan motor
for cooling the compressor.
Alarm lamp is flashed.
E10 and chamber temp.
are displayed alternately.
Intermittent tone
Remote alarm.
Compressor of
high stage side
stops.
Note:
Ŷ After power failure, the operation is resumed with the condition before power failure.
Ŷ The chamber temperature is displayed for 5 seconds if the alarm buzzer stop key (BUZZER) is
depressed during the power failure alarm. After that, the alarm buzzer stops. The alarm lamp
(ALARM) keeps blinking.
Ŷ In the case of sensor abnormality (E01 or E02 is displayed), the freezer continues to run.