When Plural Indoor Units Are Connected To The Remote Control; 7-Segment Display Indication In Automatic Address Setting - Mitsubishi Heavy Industries FDC280KXZE1 Service Manual

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(2) When plural indoor units are connected to the remote control.

When plural indoor units are connected, you can change their addresses without altering their cable connection.
Item
1
Address change mode
Press the SET switch when the display shows "CHANGE ADD.
The lowest indoor unit No. among the indoor units connected to the remote control unit will be shown.
2
Selecting an indoor unit
Pressing the
to be changed address
of the indoor units connected to the remote control and the unit No.'s of the outdoor units
connected with them.
Then the address No. of the indoor unit to be changed is determined and the screen switches to the
display "
Set a new indoor unit No. with the
3
Setting a new indoor unit No.
A number indicated on the display will increase or decrease by 1 upon pressing the
respectively.
After selecting an address, press the SET switch. Then the address No.of the indoor unit is determined.
The display will indicate the determined indoor address No. for 2 seconds and then switch to the
4
Setting a new outdoor unit No.
"
A default value shown on the display is the current address.
Set a new outdoor unit No. with the
A number indicated on the display will increase or decrease by 1 upon pressing the
respectively.
After selecting an address, press the SET switch.
Then the address of the indoor unit and outdoor unit are determined.
If you want to continue to change addresses, return to step
If you want to end the session (and reflect new address settings)
5
Ending the session
In Step
If you have finished changing addresses, press the SET switch while "END
settings are being transmitted, "SET COMPLETE" will be indicated. Then the remote control display will
change to the normal state.
If you want to end the session (without reflecting new address settings)
Before you complete the present address setting session, press the "ON/OFF" switch.
Then the display is change to exit from this mode and switch the display to the normal state.
All address settings changed in the session will be aborted and not reflected.
The switch will continuously change the display indication to the next one in every 0.25 seconds when it is pressed for 0.75 seconds or longer.
If the Reset switch is pressed during an operation, the display indication returns to the one that was shown before the last Set switch operation.
Even if an indoor unit No. is changed in this mode, the registered indoor unit No. before address change mode is displayed when [I/U SELECTION
When "SET COMPLETE" is shown, indoor unit No. is registered.
Turn on power to centralized control equipment after the addresses are determined.
NOTICE
Turning on power in wrong order may result in a failure to recognize addresses.

7-segment display indication in automatic address setting

Items that are to be set by the customer
Code
Communication protocol 0: Previous SL mode
P30
1: New SL mode
Automatic address start
P31
P32
Input starting address
Specify a starting indoor unit address in automatic address setting.
P33
Input number of connected indoor units
Polarity difinition
0: Network polarity not defined.
P34
1: Network polarity defined.
7-segment display indication in automatic address setting.
Code
Contents of a display
During automatic address setting.
AUX
X: The number of indoor units recognized by the outdoor unit.
AUE
Indoor unit address setting is completed normally.
Polarity is defined. (Automatic address)
End
Completed normally.
By changing the allocation of external input function (P07-10) on the 7-segment, functions of external input terminal
may be selected. Inputting signals to external input terminals enable the following functions.
Operation
Press the AIR-CONDITIONE Unit No. switch for 3 seconds or longer.
Each time when you press the
switch, the display indication will be switched.
switch will change the display indication cyclically to show the unit No.'s
SET I/U ADD."
switch.
SET O/U ADD." screen.
switch.
, press the
switch to select "END
Contents of a display
(The communication plotocol is displayed ; display only)
Specify the number of indoor units connected in the refrigerant system in automatic address setting.
"
or
switch
or
switch
.
."
" is shown. While new
154
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'14 • KX-SM-202
Display
CHANGE ADD
CHANGE ADD
MASTER I/U
SELECT I/U (1sec)
I/U 001 O/U 01
(Blink)
I/U 001 O/U 01
I/U 002 O/U 01
I/U 003 O/U 01
I/U 016 O/U 01
SET I/U ADD. (1sec)
I/U 001
(Blink)
I/U 000
I/U 001
I/U 002
I/U 127
I/U 002 (2sec)
I/U 002 (2sec lighting)
SET O/U ADD. (1sec)
O/U 01
(Blink)
O/U 00
O/U 01
O/U 02
O/U 31
I/U 002 O/U 02 (2sec lighting)
SELECT (1sec lighting)
I/U SELECTION
(lighting)
Press the switch (1sec)
SET COMPLETE (2 10sec
lighting)
END
SET COMPLETE (2 10sec lighting)
Normal state
ON/OFF
Forced termination
] is shown.
External output function of CnZ1 can be changed
by changing P06 on 7-segment indicator.

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