71
10-8-5. Indicating (marking) the indoor and outdoor unit combination number
Indicate (mark) the number after automatic address setting is completed.
(1) So that the combination of each indoor unit can be easily checked when multiple units are installed, ensure that
the indoor and outdoor unit numbers correspond to the system address number on the outdoor unit control
PCB, and use a magic marker or similar means which cannot be easily erased to indicate the numbers in an
easily visible location on the indoor units (near the indoor unit nameplates).
Example: (Outdoor) 1 - (Indoor) 1, 2...
(Outdoor) 2 - (Indoor) 1, 2...
(2) These numbers will be needed for maintenance. Be sure to indicate them.
* Use the remote controller to check the addresses of the indoor units. Press and hold the
button and
button for 4 seconds or longer (simple settings mode). Then press the
button and select the indoor
address. (Each time the button is pressed, the address changes as follows: 1-1, 1-2, ... 2-1, 2-2, ....) The
indoor unit fan operates only at the selected indoor unit. Confirm that correct fan is operating, and indicate
address on the indoor unit.
Press the
button again to return to the normal remote controller mode.
For details, refer to the separate handbook.
10-8-6. Main-sub remote controller control
Control using 2 remote controller switches
Main-sub remote controller control refers to the use of 2 remote controllers to control 1 or multiple indoor units.
(A maximum of 2 remote controllers can be connected.)
●
Connecting 2 remote controllers to
control 1 indoor unit
●
Connecting 2 remote controllers to control a
simultaneous-operation multi system
1 2
1 2
1 2
U1U2
1 2
1 2
U1U2
1 2
U1U2
1 2
1 2
1 2
U1U2
1 2
Remote controller wiring
Optional
Optional
Optional
Optional
Remote controller
switch (sub)
Remote controller
switch (main)
Remote controller
switch (main)
Indoor unit
Indoor unit 1
Outdoor unit
Indoor unit 2
Indoor unit 3
Outdoor unit
Ground
Ground
Ground
Ground
Ground
Ground
Remote controller
switch (sub)
Remote controller
crossover wiring
Inter-unit
control wiring
for remote
controller wiring
Terminal plate
Terminal plate
for remote
controller wiring
Terminal plate
for remote
controller wiring
(Setting procedure)
(1) Set 1 of the 2 connected remote controllers as the
main remote controller.
(2) On the other remote controller (sub remote con-
troller), change the remote controller address con-
nector on the reverse side of the remote controller
switch PCB from the Main position to the Sub
position.
The remote controller will now function as the sub
remote controller.
The sub remote controller will also operate if con-
nected to indoor unit 2.
Fig. 10-8
TIMER
TMNL.
RCU
TMNL.
RCU.ADR
RCU.Main
RCU.Sub
RCU.CK
To Service Technicians
To display the sensor temperature:
WA R N I N G
To avoid an electric shock hazard,
DO NOT touch any ter-
minal on the Printed Cir-
cuit Board with a metal rod, a
screwdriver edge or bare hand
when power
is supplied.
Press both and buttons on the
remote controller for more than 4 seconds
together.
Change the sensor address (CODE NO.)
with / (SET TEMP) buttons.
Select the UNIT NO. that you want to call
with button.
Press the button to finish service mode.
To display the trouble history:
Press both and buttons on the
remote controller for more than 4 seconds
together.
Change the alarm message:
/ (SET TEMP) buttons
CODE NO.
Press the button to finish service
mode.
On the remote controller, press
+ + at the same time for
more than 4 seconds.
Set CODE No. with /
(SET TEMP) button.
Set DATA from to
with / (TIMER) button.
Press
Finally, Press
(New) (Old)
Changing method for room
temperature sensor (from Indoor
unit to RCU)
1
2
3
4
Remote Controller (Sub)
Remote controller
address connector
Remote Controller (Main)
Checking remote controller
04-393 DC INV Tech p 64-110 12/13/04 11:35 AM Page 71
