Installation guide

En-11
14. SPECIAL INSTALLATION METHODS
Group control system
A number of indoor units can be operated at the same time using a single remote controller.
*When connecting different types of indoor units (such as wall mounted, cassette, duct, or
other types), some functions may be restricted.
(1) Connect multiple indoor units in a system.
A
BCDE
I.U. I.U. I.U. I.U.
Remote
controller
A, B, C, D, E : Remote controller cable.
A+B+C+D+E ≤ 500 m.
Select the appropriate cable depending on the total wiring length. (Refer to the following table.)
Total wiring length of
remote controller cable
(A+B+C+D+E)
Cross section of cable
500 m (1640 ft.) or less 0.3-1.25 mm
2
Example of wiring method
Y1
Y2
Remote
controller cable
Remote controller
PCB or terminal block
for wired remote controller
Indoor unit 1 Indoor unit 2 Indoor unit 3 Indoor unit 4
(2) Set the R.C. address (Function setting)
Automatic setting:
• Addresses will be automatically set when initially starting up this unit. In such a
case, do not change the R.C. address of the indoor unit, and keep it at the initial
setting (00).
• Connect up to 16 indoor units in a system.
Manual setting:
•
Only set addresses manually when using different numbers for addresses.
Set the R.C. address of each indoor unit with the wireless remote controller.
Also set the R.C. address of the wired remote controller. For details, please refer
to the installation manual of the remote controller.
• Connect up to 15 indoor units in a system.
* Do not use the R.C. address “00”.
Example
Example of wiring method
RC AD
01
RC AD
02
RC AD
03
RC AD
04
Remote
controller
Indoor unit 1 Indoor unit 2 Indoor unit 3 Indoor unit 4
Remote controller address setting
(♦... Factory setting)
Function
Number
Setting
Value
Setting Description
00
00 Setting prohibited ♦
01 Unit no. 1
02 ~ 13 Unit no. 2 ~ Unit no. 13
14 Unit no. 14
15 Unit no. 15
* Do not use the same setting value.
* After completing the function setting, be sure to disconnect the power supply and then
reconnect it.
NOTES:
Set the R.C. address by the wireless remote controller.
15. CUSTOMER GUIDANCE
Explain the following to the customer in accordance with the operating manual:
(1) Starting and stopping method, operation switching, temperature adjustment, timer, airow
switching, and other remote control unit operations.
(2) Air lter removal and cleaning, and how to use the air louvers.
(3) Give the operating manual to the customer.
16. ERROR CODES
If you use a wireless remote controller, the lamp on the photo detector unit will output error
codes by way of blinking patterns. If you use a wired remote controller, error codes will ap-
pear on the remote control display. See the lamp blinking patterns and error codes in the
table. An error display is displayed only during operation.
Error display
Error code Description
OPERATION
lamp
(green)
TIMER
lamp
(orange)
ECONOMY
lamp
(green)

(1)

(1)
Serial communication error

(1)

(2)
• Wired remote controller
communication error
• Server room control
communication error

(1)

(5)
Check run unfinished
Automatic airflow adjustment error

(1)

(6)
Peripheral unit transmission PCB
connection error

(1)

(8)
External communication error

(2)

(1)
Unit number or Refrigerant circuit
address setting error
[Simultaneous Multi]

(2)

(2)
Indoor unit capacity error

(2)

(3)
Combination error

(2)

(4)
• Connection unit number
error (indoor secondary unit)
[Simultaneous Multi]
• Connection unit number error
(indoor unit or branch unit)
[Flexible Multi]

(2)

(6)
Indoor unit address setting error

(2)

(7)
Primary unit, secondary unit setup
error [Simultaneous Multi]

(2)

(9)
Connection unit number error in
wired remote controller system

(3)

(1)
Power supply interruption error

(3)

(2)
Indoor unit PCB model
information error

(3)

(3)
Indoor unit motor electricity
consumption detection error

(3)

(5)
Manual auto switch error

(3)

(9)
Indoor unit power supply error for
fan motor

(3)

(10)
Indoor unit communication circuit
(wired remote controller) error

(4)

(1)
Room temp. sensor error

(4)

(2)
Indoor unit heat ex. middle temp.
sensor error

(4)

(4)
Human sensor error

(5)

(1)
Indoor unit fan motor error

(5)

(3)
Drain pump error
●
(5)
●
(4)
Electric air cleaner reverse VDD
error
●
(5)
●
(5)
Filter set error

(5)

(7)
Damper error
●
(5)
●
(8)
Intake grille error
●
(5)
●
(9)
Indoor unit fan motor 2 error
(Left side fan)
●
(5)
●
(10)
Indoor unit fan motor 3 error
(Right side fan)

(5)

(15)
Indoor unit error
9387603019_IM_En.indd 11 2/6/2018 10:12:22