Panasonic MDF-DU900V Operating Instructions Manual page 49

ALARMS, SAFETY, AND SELF-DIAGNOSIS
Table 3 Alarms & safety function list
Alarm & safety Situation
If the thermal sensor is
disconnected.
If the thermal sensor is
short-circuited.
If the cascade sensor is
disconnected.
If the cascade sensor is
short circuited.
Sensor abnormality
If the filter sensor is
disconnected.
If the filter sensor is
short-circuited.
If the ambient tem. sensor
is disconnected.
If the ambient tem. sensor
is short-circuited.
When the battery switch
Battery switch check for power failure alarm is
OFF.
When the fan motor for
cooling the compressor
Condenser temp. fails.
abnormality (If the temperature of the
filter sensor is 52
higher.)
When communication
between LCD touch
Communication
panel and control
error
substrate is died out or
unstable.
● When "disconnecting/short-circuit of the thermal sensor" and "condenser temp. abnormality" are
activated at the same time, safety operation of compressor OFF is prioritized.
48
LCD touch panel
Message display field
Err01:
Temperature Sensor Open.
Err02:
Temperature Sensor Short.
Err03:
Cascade Sensor Open.
Err04:
Cascade Sensor Short.
Err05:
Filter Sensor Open.
Err06:
Filter Sensor Short.
Err07:
Ambient Temp Sensor Open.
Err08:
Ambient Temp Sensor Short.
Err09:
Battery Switch is OFF.
Err10:
Condenser Temp Abnormal.
o
C or
Err56:
Communication Failure.
Buzzer
Alarm display
"Warning" is
displayed
alternately in Intermittent
normal tone
characters and
reverse video.
― ―
"Warning" is
displayed
alternately in Intermittent
normal tone
characters and
reverse video
― ―
Remote Safety
alarm operation
Unit is
continuous
running.
―
ON
―
―
― ―
Compressor
ON
OFF
― ―