Sanyo MDF-593 Instruction Manual page 20

OPERATING INSTRUCTIONS
Alarm and safety functions
This unit has the alarm and safety functions shown in table below, and also self diagnostic function.
Table 4. Alarm and safety function
Alarm & safety
When the chamber temp. is
High temperature
approx. 10
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.
Sensor
abnormality
If the cascade sensor is
shirt-circuited.
If the filter sensor is
disconnected.
If the filter sensor is
short-circuited.
Note：
The filter check lamp sometimes lights at the start-up under high ambient temperature. The lamp will 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.
Situation
o o
C (or 15 C) higher Alarm lamp blinks.
Alarm lamp blinks.
Filter check lamp lights.
Chamber temp. is
displayed.
Alarm lamp blinks.
E01 and 50
displayed alternately.
Alarm lamp blinks.
E01 and -170
displayed alternately.
Alarm lamp blinks.
E03 and chamber temp.
is displayed alternately.
Alarm lamp blinks.
E04 and chamber temp.
is displayed alternately.
Alarm lamp blinks.
E05 and chamber temp.
is displayed alternately.
Alarm lamp blinks.
E06 and chamber temp.
is displayed alternately.
19
Indication Buzzer
Intermittent
tone
12
min. delay
Intermittent
tone
-----
-----
o
C is
Intermittent
tone
o
C is
Intermittent
tone
Intermittent
tone
Safety operation
with Remote alarm
with 12 min. delay
Remote alarm
-----
Finishing of each
setting mode
Remote alarm
Continuous
operation
Remote alarm
Remote alarm