Alarms And Safety Functions - Sanyo MDF-U730 Service Manual

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ALARMS AND SAFETY FUNCTIONS
This unit has the alarm and safety functions shown in Table 4, and also a self diagnostic function.
Table 4 Alarms and safety functions
Kind of alarm
Situation Indication Buzzer Safety operation
High abin miz Alarm lamp flashes. Intermittentitone ποιοί ο
temperature o p p . after a delay of 15 [activated after a
more than 10%C. . ;
alarm minutes. delay of 15 minutes.
Low It the chamb er temperature Intermittent tone Remote alarm is
is lower 10°C than the set :
temperature Alarm lamp flashes. after a delay of 15 [activated after a
temperature . E i
alarm minutes. delay of 15 minutes.
Power failure
alarm
In the event of a power
failure or disconnection of
power supply plug from the
outlet
Alarm lamp flashes.
Intermittent tone
Remote alarm is
activated.
Door alarm
When the door is open.
Door check lamp is lit.
Intermittent tone
after a delay of 2
minutes.
Auto return
If a key operation is not
performed for about 90
seconds in each setting
mode.
Chamber temperature is
displayed.
Setting mode is
canceled.
Key lock
When the key lock is ON
(1).
Key input is unable.
Ifthe thermal sensor goes |E01 and LO(E01 and HI) Operation is
open (E01/LO) are displayed alternately on the keeping
Thermal sensor [or short circuit (E01/HI). temperature display Y... continuously.
abnormality If the defrost sensor goes E02and chamber temperature Normal running and
Open (E02)or short circuit are displayed alternately on the defrost will be psaaed
(E02). temperature display.
Note:
The alarm can be canceled by pressing the alarm buzzer stop key (BUZZER), but the remote alarm cannot be
silenced.
After a power failure, the unit will resume operation with the set value that was in place before power failure
occurred.
=88s