Mitsubishi Electric FDT125VNVF Technical Manual page 482

Remote controller
Installation of the controller holder
Caution
DO NOT install it on the following places
4. Hot surface or cold surface enough to generate
1. Places exposed to direct sunlight
2. Places near heat devices
5. Places exposed to oil mist or steam directly.
3. High humidity places
6. Uneven surface
Wood screw
Installation tips for the remote controller holder
Adjust and keep the holder upright
Tighten the screw to the end to avoid scratching the remote controller.
DO NOT attach the holder on plaster wall.
How to insert batteries
1 Detach the back lid.
2 Insert the batteries. (two AAA batteries)
3 Reattach the back lid.
Control plural indoor units with one remote controller
Up to 16 indoor units can be connected.
1 Connect the XY terminal with 2-core wire. As for the size, refer to the following note.
2 For Single packaged air conditioner series, set the indoor unit address with SW2 on the indoor
unit PCB from [0] to [F] so as not to duplicate.
Restrictions on the thickness and length of wire
(Maximun total extension 600m.)
Standard
Within 100m x 0.3 mm
Within 200m x 0.5 mm
Within 300m x 0.75mm
Within 400m x 1.25mm
Within 600m x 2.0 mm
Terminal block
Indoor unit (1) Indoor unit (2)
Address (0) Address
Receiver
Remote controller
3 For VRF series, set the indoor unit address with SW1, SW2 and SW5-2 on the indoor
unit PCB from [000] to [127] so as not to duplicate.
Master/Slave setting when using plural remote controllers
Up to two receivers can be installed in one indoor unit group.
When two receivers are used, it is necessary for a receiver to turn OFF SW2 on the receiver PCB
to set it as slave.
(For the method of switching, please see Setting on site in the section of
2 How to install the receiver
in this manual.)
condensation
Holder for remote controller
Ensure the correct
polarity when
inserting.
2
2
2
2
2
Indoor unit (16)
(1) Address ( F )
Wireless remote controller's operable area
1 Standard reachable area of the signal
[condition] Illuminance at the receiver: 300lux
(when no lighting is installed within 1m of the receiver in an ordinary office.)
Reachable area of the signal
4m 3m 2m
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 remote controller 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 )
How to disable the Auto mode operation
VRF series (except heat recovery 3-pipe systems) cannot be operated
in Auto mode.
Make sure to set the remote controller for the models so as not to be
able to choose Auto mode.
Pressing ACL switch with MODE button kept pressing or inserting
the batteries with pressing MODE button will make auto mode
operation.
Note
When the batteries are removed, the setting will return to the
default setting (Auto mode is valid).
Caution
Instruct the customer to set the mentioned above when
replacing the batteries. (How to set is also mentioned in
the user's manual attached on the air conditioner.)
Backup button
A Backup button is provided on the receiver.
Even when the operation from the wireless
remote controller is not possible (due to flat
batteries, controller lost, or controller failure),
still it possible to operate as temporary means.
Press the button directly when operating it.
(1) The air conditioner starts the operation with
the condition of Auto mode, 23
point, High fan speed and horizontal louver
position.
(2) The air conditioner stops the operation when
the button is pressed when in operation.
Cooling test run operation
After safety confirmation, turn on the power.
Transmit a cooling operation command with wireless remote controller, while the backup button on
the receiver is pressed.
If the backup button 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 by consulting with inspection
guides on the wiring diagram of outdoor units.
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 controller or the operation of the backup button 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
controller, while the backup button is pressed.
481
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'12 • PAC-T-174
PJA012D758
Ceiling surface
1m 0 1m 2m 3m 4m
The receivable area of the
signal when the illuminance
4m
at the receiver is 300lux
3m
2m
1m
1m 2m 3m 4m
The receivable area of the
signal when the illuminance at
the receiver is 600lux
Auto mode operation setting
˚
C of set
Backup button