86
In case of increase the address-undefined indoor units (Extension, etc.)
If set up the indoor address of which address is undefined accompanied with extension of indoor units, replace-
ment of P.C. board, etc, follow to the methods below.
Method 1
Set up an address individually from a wired remote controller.
(Line address, Indoor address, Group address, Central address)
For the setup method, refer to the above “Manual address setup from remote controller”.
Method 2
Set up an address from the outdoor unit.
∗
Leave the address of the unit of which address has been already set up as it is.
Set up an address only to the unit of which address is undefined.
The addresses are allocated from the low number.
Setup procedure
Arrange the outdoor units in the refrigerant line to which indoor units are added. (Figure below)
1. Remove the relay connector between [U1U2] and [U3U4].
2. Turn on SW30-2 on the interface P.C. board at outdoor unit side if it is OFF.
∗
Turn off the power, and then execute the operation.
“AUTO1”
→
“AUTO2”
→
“AUTO3”
→
…
→
“AUTO9” … is counted and displayed on 7-degment display.
• Return the SW01, 02, 03 setup as before.
5. When “U.1. - - -” is displayed on 7-segment display, the setup operation finished.
Turn off the indoor/outdoor power.
6. Return the following setup as before.
• Relay connector
• SW30-2
3. Turn on the indoor/outdoor power of which address is to be set up. After approx. 1 minute, check that
“U.1. - - -” is displayed on 7-segment display.
4. Execute the following operation on the interface P.C. board of the outdoor unit.
SW01
SW02
SW03
2
14
2
SW04
After checking that “
” is displayed on 7-segment
display, and then push SW04 for 5 seconds or more.
U3 U4
U1 U2
U1 U2
A B
Outdoor unit
Remote
controller
U1 U2
A B
Remote
controller
U3 U4
U1 U2
U1 U2
A B
Remote
controller
U1 U2
A B
U3 U4
U1 U2
U1
U3
U2
U4
U5 U6
U1 U2
A B
Remote
controller
Outdoor unit
Outdoor unit
Central control
device
Added indoor unit
9-4-4. Check after Address Setup When Central Control System is Connected
When the central control system is connected, check the following setup has finished after address setup.
Note)
The above table does not describe all the electric cablings. For details, refer to each installation manual
for outdoor unit, indoor unit, remote controller, and optional devices.
Relay
connector
Terminal
resistance
Line address
Main check items
Is relay connector of the outdoor unit connected after address setup?
Is the terminal resistor (SW30-2) of the outdoor unit with the least
refrigerant line address number (in the central control line) turned on?
Are the terminal resistor (SW30-2) of the outdoor units except for the
line of which central control refrigerant line address is the smallest,
turned off? (Setup is unnecessary for follower unit.)
Are not addresses in the line address (SW13, SW14) duplicated in
each refrigerant line?
Check
Outdoor unit
U1 U2
U3 U4
E
N
L
2
4
U1 U2
U3 U4
A
B
U1 U2
E
N
L
1
A
B
U1 U2
E
N
L
Indoor unit
Earth leakage breaker
Power supply
Power supply
Over current breaker (fuse)
Earth leakage breaker
Central control units
Remote
controller
A
B
U1 U2
E
N
L
Other refrigerant system
Other refrigerant
system
Line address = 1
U1 U2
U3 U4
E
N
L
4
1
Line address = 2
3
No.
