Alarms & Safety Functions - Phcbi MDF-1156 Series Operating Instructions Manual

ALARMS & SAFETY FUNCTIONS
This unit has the alarm and safety functions shown in table below, and also self diagnostic function.
Table 4. Alarms and safety functions
Alarm & safety
When the chamber temp. is
High temperature
approx. 15
alarm
than the set temp.
At power failure
Power failure
When power cord is
alarm
disconnected.
When the condenser filter
Filter check
is clogged.
When there is no key
Auto-return pressing in each setting
mode for 90 seconds.
If the thermal sensor is
disconnected.
If the thermal sensor is
shirt-circuited.
If the cascade sensor is
disconnected.
If the cascade sensor is
shirt-circuited.
Sensor
abnormality
If the filter sensor is
disconnected.
If the filter sensor is
short-circuited.
If the ambient temperature
sensor is disconnected.
If the ambient temperature
sensor is short-circuited.
In the event of failure of fan
Condenser temp.
motor
abnormality
compressor
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.
Operation after power failure
The set value (setting of chamber temperature and alarm temperature) is memorized by nonvolatile
memory. Accordingly, the freezer resumes the operation with setting before power failure.
This unit has the alarms and safety functions shown in Table 4, and also self diagnostic functions.
Situation
o C (or 10 o C) higher Alarm lamp blinks.
Alarm lamp blinks.
Filter check lamp blinks.
Chamber temp. is
displayed.
Alarm lamp blinks.
E01 and 50
displayed alternately.
Alarm lamp blinks.
E02 and -170
displayed alternately.
Alarm lamp blinks.
E03 and chamber temp.
are displayed alternately.
Alarm lamp blinks.
E04 and chamber temp.
are displayed alternately.
Alarm lamp blinks.
E05 and chamber temp.
are displayed alternately.
Alarm lamp blinks.
E06 and chamber temp.
are displayed alternately.
ALARM lamp blinks.
E07 and chamber temp.
are displayed alternately.
ALARM lamp blinks.
E08 and chamber temp.
are displayed alternately.
E10 and chamber temp.
for cooling the
are displayed alternately.
17
Indication Buzzer
Intermittent
tone with 12
min. delay
Intermittent
tone
Intermittent
tone
-----
o C is
Intermittent
tone
o C are
Intermittent
tone
Intermittent
tone
Intermittent
tone
Intermittent
tone
Safety operation
Remote alarm
with 12 min. delay
Remote alarm
-----
Finishing of each
setting mode
Remote alarm
Continuous
operation
Remote alarm
Remote alarm
Remote alarm
Remote alarm.
Compressor of
high stage side
stops.