Alarms & Safety Functions - Sanyo MPR-1411 Instruction Manual

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
High temperature If the chamber temperature deviates from the
alarm set temperature +2
If the chamber temperature deviates from the
Low temperature
set temperature -2
alarm
If the chamber temperature is lower than 0
When the chamber temp. is higher than 40
Over-heat
(Reset when the chamber temp. is lower than
protection
o
30 C)
When the chamber temp. is lower than -1
Over-cooling
(Reset when the chamber temp. is higher than
protection
o
6 C)
Power failure
When the power to the unit is disconnected.
alarm
Power failure alarm At power failure.
(with MPR-48B) If the power supply cord is unplugged.
Door alarm When the door is open.
When there is no key pressing in each setting
Auto-return
mode for 90 seconds.
Key lock When the key lock is "ON".
If the thermal sensor is disconnected.
If the thermal sensor is short-circuited.
If the defrost sensor is disconnected.
Sensor abnormality
If the defrost sensor is short circuited.
If the compressor sensor is disconnected.
If the compressor sensor is short-circuited.
Battery switch
When the battery switch is turned ON without
check (with
setting after attachment.
MPR-48B)
Condenser temp. In the event of failure of fan motor for cooling
abnormality
the compressor
Battery check When about 3 years have passed with the
(with MPR-48B) power switch on. (time to replace the battery)
When about 6 years have passed with the
Fan motor check power switch on. (time to replace the fan
motor)
Note:
The alarm status of remote alarm terminal is cancelled by pressing the alarm buzzer stop key (BUZZER)
since the remote alarm is operated in conjunction with alarm buzzer. (except for power failure alarm
status).
When more than two alarm conditions occur simultaneously, the lowest number error code has priority on
the error display.
After a power failure, the unit will resume operation with the set value that was in place before power
failure occurred.
The over-cooling protection may activate when the set temperature is 2
temperature will rise to 6
Situation
Alarm lamp is flashed.
o o
C or up to +14 C. Chamber temperature is flashed.
Alarm lamp is flashed.
o o
C or up to -14 C.
Chamber temperature is flashed.
o
C.
o
C.
-----
o
C.
-----
-----
Alarm lamp blinks.
Door check lamp is lit.
Chamber temperature is
displayed.
-----
Alarm lamp is flashed.
E01 and 50
displayed alternately.
Alarm lamp is flashed.
E02 and 50
displayed alternately.
Alarm lamp is flashed.
E03 and chamber temp. are
displayed alternately.
Alarm lamp is flashed.
E04 and chamber temp. are
displayed alternately.
Alarm lamp is flashed.
E05 and chamber temp. are
displayed alternately.
Alarm lamp is flashed.
E06 and chamber temp. are
displayed alternately.
E09 and chamber temp. is
displayed alternately.
E10 and chamber temp. are
displayed alternately.
F-1 and chamber temp. is
displayed alternately.
F-2 and chamber temp. is
displayed alternately.
o
C, but this is not malfunction
- 60 -
Indication Buzzer
Intermittent tone with
about 15 minutes delay.
Intermittent tone with
about 15 minutes delay.
Intermittent tone
-----
-----
-----
Intermittent tone
Intermittent tone with
about 2 minutes delay.
-----
-----
o o
C (or -50 C) are Intermittent tone
o o
C (or -50 C) are Intermittent tone
Intermittent tone
Intermittent tone
Intermittent tone
Intermittent tone
-----
Intermittent tone
-----
-----
o
C. In this case, the chamber
Safety operation
Remote alarm with about
15 minutes delay.
Remote alarm with about
15 minutes delay.
Remote alarm
Inside fan, drain pan
heater, defrost heater,
drain pipe heater OFF
Compressor OFF
Remote alarm.
Alarm status.
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Finishing of each setting
mode.
Change of setting is
disable.
Remote alarm.
Unit keeps continuous
running.
Remote alarm.
Unit keeps continuous
running.
Remote alarm.
Remote alarm.
Remote alarm.
Remote alarm.
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Remote alarm.
Compressor of high stage
side stops.
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