10
ENGLISH
Operation
Behaviour is as follows according to the status of the sensor unit.
• Sensor unit
• Wired remote
controller
• Outdoor unit
• Ext output
• Indoor unit
The buzzer sounds when Refrigerant leakage alarm operations.
To stop the buzzer, use the tip of a pen, etc., to press the switch.
Switch
Status of the
sensor unit
Sensor unit
Wired remote
controller
Indoor
unit
Outdoor unit
OPERATION
LED(Green)
ALARM
LED(Red)
Buzzer Ext output
Leaking Off Blinking
On
*
1
DC5V output
Error code
P08 is
displayed
Mixing
operation
Stop operation
Abnormal
Blinking On Off No output
Error code J01
is displayed
Fan stops
Operation
continues
Service life
exceeded
*
2
Alternately Off No output
Error code J02
is displayed
Fan stops
Operation
continues
● When the gas concentration returns to the normal level, the ALARM LED (Red) turns off , the OPERATION LED (Green) turns on,
and the buzzer stops sounding. Even when the gas concentration returns to the normal level, the sensor unit alarm operations
indicated above for the Ext output, remote controller, and outdoor unit will continue.
● When the gas concentration returns to the normal level, mixing operation ceases a certain amount of time later.
● If the buzzer was stopped with the switch, the buzzer sounds again after 1 hour if refrigerant is still detected.
● Also replace the sensor PCB with a new one after an alarm occurs notifying of a refrigerant leakage. The sensor is less responsive
to refrigerant after it has detected a high concentration of refrigerant once.
● The recommended period of use for the sensor PCB is 10 years.（ When the unit is used by observing the“Safety Precautions”
correctly and continuously)
● When the service life is exceeded, contact the manager of the facility and the person responsible for servicing to have the sensor
PCB replaced.
*
1
A switch setting can disable the buzzer.
*
2
When you restart using the remote controller, the error on the remote controller disappears, then operation becomes possible
when the “
” is blinking on the screen.
WARNING
● When a gas alarm occurs, immediately ventilate the area and
evacuate from the room. Also contact the manager of the
facility and the person responsible for servicing.
● If there is abnormal behaviour, contact the manager of the
facility and the person responsible for servicing.This sensor unit
may be in a state where it is unable to detect refrigerant.
Mounting
Connection Specifi cations
Sensor unit side External equipment side
Condition Terminal name Terminal Circuit example Condition
Status
output
Monitoring : No output
Leaking : 5 V output
Output voltage
: DC5 V
Output allowable current:
Max. 50 mA
Rated coil voltage:
DC5 V
Alarm output Coil
1
2
Common (COM)
Relay
+
-
1.9 m or less / 0.75 mm
2
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