Mitsubishi Heavy Industries SCM71ZM-S1 Technical Manual page 322

⑤
Receiver (continued)
2. Correlation between illuminance at the
receiver and reachable area of the signal
in a plain view.
The drawing in the right shows the
correlation between the reachable area of
the signal and illuminance
at the receiver when the wireless remote
control is operated at 1m high
under the condition of ceiling
height of 2.4m.
3. Installation tips when several receivers are installed close
Minimum distance between the indoor units which can avoid cross communication is 5m under the
condition of 300lux of illuminance at the receiver.
(When no lighting is installed within 1m of the receiver in an ordinary office.)
Backup switch
A backup switch is provided on the receiver section of the panel
surface.
When operation from the wireless remote control unit is not
possible (due to flat batteries, a mislaid unit, a unit failure), you
can use it as an emergency means. You should operate this
switch manually.
1. If pressed while the air-conditioner is in a halt, it will cause
the air-conditioner to start operation in the automatic mode
(in the case of cooling only, in the cooling mode).
Wind speed: Hi fan, Temperature setting: 23°C, Louver: horizontal
2. If pressed while the air-conditioner is in operation, it will stop the air-conditioner.
Cooling test run operation
● After safety con firmation, turn on the power.
● Transmit a cooling operation command with the wireless remote control unit, while the backup switch
on the receiver is depressed.
● If the backup switch on the receiver is pressed during a test run, it will end the test run.
● If you cannot operate the unit properly during a test run, please check wiring by consulting with
inspection guides.
How to read the two-digit display
On the receiver of a wireless kit, a two-digit (7-segment) display is provided.
1. An indication will be displayed for one hour after power on.
2. An indication will be displayed for 3.5 seconds after transmitting a "STOP" command from the
wireless remote control or the operation of the backup switch to stop the unit.
3. An indication appearing in (1) or (2) above will go off as soon as the unit starts operation.
4. When there are no error records to indicate, addresses of all the connected units are displayed.
5. When there are some error records remaining, the error records are displayed.
6. Error records can be cleared by transmitting a "STOP" command from the wireless remote
control, while the backup button is pressed.
4m
3m
2m
1m
1m
321
- -
'17 • SCM-T-225
The receivable area of the
signal when the illuminance
at the receiver is 300lux
2m 3m 4m
The receivable area of the
signal when the illuminance at
the receiver is 600lux
Backup switch
PJA012D791
2016/11/14 15:52:36
6
8