18
ALARMS AND SAFETY FUNCTIONS
Table 4. Alarm and safety function
Alarm & safety
Situation
Indication
Buzzer
Safety operation
Sensor
abnormality
If the thermal sensor is
disconnected.
Alarm lamp blinks.
E01 and 50
o
C is
displayed alternately.
Intermittent
tone
Remote alarm
Continuous
operation
If the thermal sensor is
shirt-circuited.
Alarm lamp blinks.
E02 and -170
o
C are
displayed alternately.
If the cascade sensor is
disconnected.
Alarm lamp blinks.
E03 and chamber temp.
are displayed alternately.
Intermittent
tone
Remote alarm
If the cascade sensor is
shirt-circuited.
Alarm lamp blinks.
E04 and chamber temp.
are displayed alternately.
If the filter sensor is
disconnected.
Alarm lamp blinks.
E05 and chamber temp.
are displayed alternately.
Intermittent
tone
Remote alarm
If the filter sensor is
short-circuited.
Alarm lamp blinks.
E06 and chamber temp.
are displayed alternately.
If the ambient temperature
sensor is disconnected.
ALARM lamp blinks.
E07 and chamber temp.
are displayed alternately.
Intermittent
tone
Remote alarm
If the ambient temperature
sensor is short-circuited.
ALARM lamp blinks.
E08 and chamber temp.
are displayed alternately.
Condenser temp.
abnormality
In the event of failure of fan
motor for cooling the
compressor
E10 and chamber temp.
are displayed alternately.
Intermittent
tone
Remote alarm.
Compressor of high
stage side stops.
Battery life
When it passed for about 3
years by ON the power
switch.
F1 and chamber temp.
are displayed alternately.
----- -----
Fan motor life
When it passed for about 6
years by ON the power
switch.
F2 and chamber temp.
are displayed alternately.
----- -----
Note
:
•
The filter check lamp sometimes blinks at the start-up under high ambient temperature. The lamp is off
when the chamber temperature is getting lower.
• Fan motors are expendable supplies. Exchange them for about every 6 years. Contact our sales
representative or agent at the time of replacement of the fan motor.
The error alarm explanation of the thermal sensor (in the chamber).
Indication
Contents of a trouble
E01
When sensor lead wire (red) is opened.
E02
When sensor lead wire (red) is
short-circuited.
When sensor lead wire (white) or
(black) is opened.
RED
BLACK WHITE