Alarms And Safety Functions - Sanyo MIR-554 Instruction Manual

ALARMS AND SAFETY FUNCTIONS

The unit has the alarms and safety function as shown in the table 1 below.
Table 1 Alarms and safety functions
Alarm
1 Auto-set temp. When the chamber
alarm temp. deviates from
set temp. by more
than 2.5
5.0
2 Upper limit alarm When the chamber
temp. is higher than
the upper limit temp.
3 Lower limit alarm When the chamber
temp. is lower than
the lower limit temp.
4 Thermal fuse When the chamber
temp. is over 70
5 Thermal sensor Input voltage is over
abnormality 70
Input voltage is lower
than -50
corresponding
6 Abnormal The temp. control
completion of sensor is higher than
defrosting 20
defrosting
7 Short-circuit of Microcomputer
SSR or determines
compressor relay triac/compressor relay
is shorted
8 Disconnection of The heater is not
SSR energized
9 Disconnection of The compressor relay
compressor relay is not energized
Condition
<Top screen>
The current chamber
temp. blinks.
o
C.（±1.0∼
o
C changeable）
―――
―――
―――
o
C
<Top screen>
o
E01:Temp. sensor
C corresponding
is opened.
E02:Temp. sensor is
o
shorted.
C
<Top screen>
E03:Abnormal
o
C during completion of
defrosting.
<Top screen>
E04:SSR or comp.
relay is shorted.
<Top screen>
E05:SSR is
open-circuited.
<Top screen>
E06:Comp. relay is
open-circuited.
Display Buzzer
Intermittent
tone with
delay
Continuous
tone
Continuous
tone
――
Intermittent
tone
――
Intermittent
tone
Intermittent
tone
Intermittent
tone
45
Remote Safety operation
contact
Alarm High stage side;
status heater OFF
with Low stage side;
delay compressor OFF
Alarm Heater, fluorescent
status lamp, fan motor
OFF
Alarm Compressor OFF
status
− Main heater and
sub-heater OFF
Alarm Heater, fluorescent
status lamp, fan motor
and compressor
OFF
−
Forced finish of
defrosting
Alarm ――
status
Alarm ――
status
――
Alarm
status