Mitsubishi Heavy Industries FDC Series Technical Manual Download

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491

'12 • PAC-T-173

Wood screw

Holder for remote controller

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.

Installation of the controller holder

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 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.)

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

Standard

Master/Slave setting when using plural remote controllers

Terminal block

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.

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.

Attention

Caution

How to disable the Auto mode operation

VRF system (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.

Pushing ACL and MODE button at the same time or inserting the
batteries with pressing MODE button will make auto mode
operation.

※

When the batteries are removed, the setting will return to the

default setting (Auto mode is valid).

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.)

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.

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

C of set point, High fan

speed and horizontal louver position.

(2) The air conditioner stops the operation when the button

is pressed when in operation.

backup button

Remote controller

2.5

1.1

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.)

Ceiling surface

Reachable area of the signal

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 1.1m high under the
condition of ceiling height of 2.5m.
When the illuminance becomes double,
the area is narrowed down to two
thirds.

The receivable area of the
signal when the illuminance
at the receiver is 300lux

The receivable area of the
signal when the illuminance at
the receiver is 600lux

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 )

Caution

DO NOT install it on the following places
1. Places exposed to direct sunlight
2. Places near heat devices
3. High humidity places

Ensure the correct
polarity when
inserting.

Indoor unit (1)
Address (0)

Indoor unit (2)
Address (1)