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1.5.4 Ventilator Volume Detection
(FA Sensor)
Sometimes FA (Fresh Air) is taken in with the
ventilator opened in the chilled mode. The FA
volume can be displayed on the LCD screen or
recorded as log with the FA sensor. When the
ventilator is opened in the frozen mode, alarm
E807 is displayed.
The wire reel mechanism and position meter
are installed inside of the FA sensor. The wire is
connected to the ventilator outlet cover so that
the movement of the cover opening and closing is
converted into the variation of voltage to send to
the controller.
Ventilation cover
FA sensor
Either "Ventilator with insect screen" or "Ventilator
without insect screen" is set for the unit installed with
FA sensor at factory referring to ※12 Configuration
Set in paragraph 2.3.
●Setting of ventilation volume (FA volume)
Conduct the setting of ventilation volume after the
completion of the FA sensor calibration. FA sensor
characteristic differs between the ventilator opening
and closing. To display accurate FA volume, make
sure to follow the procedure of manual. Refer to ※
18 FA sensor calibration in paragraph 4.1.
●Event log recording
FA volume (m3/h) is recorded as event log at the
following timings.
1. At FA setting, at FA change
2. 0:00 am (Once a day)
3. When the unit starts to run
1.5.5 Remote Monitoring Receptacle
Able to install receptacle for remote monitoring on
front of the unit.
In case of connect remote monitoring cable, below
operation conditions are transferred to main board.
1. Compressor running
2. Defrost
3. In-range
CPU board
X8A
1-20
RM receptacle
D
A
C
B
A : Earth
B : Compressor
C : Defrost
D : In range
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