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Mini VRF SYSTEM
Address Settings
3. Auto Address Setting
1
1-7
Case 2
Automatic Address Setting (no compressor operation)
Indoor and outdoor unit power can be turned ON for each system separately.
Indoor unit addresses can be set without operating the compressors.
Automatic Address Setting from Outdoor Unit
1
(These are the settings at the time of factory shipment.)
2
3
On the outdoor unit control PCB, check that the system address rotary switch (S002) is set to “1” and that the DIP switch
(S003) is set to “0”.
To set the number of indoor units that are connected to the outdoor unit to 6 on the outdoor unit control PCB, set the
No. of indoor units rotary switch (S004) to “6”.
At the outdoor unit where all indoor and outdoor unit power has been turned ON, short-circuit the automatic address pin
(CN-A.ADD) for 1 second or longer, then pull it out.
↓
(Communication for automatic address setting begins.)
↓
* To cancel, again short-circuit the automatic address pin (CN-A.ADD) for 1 second or longer, then pull it out.
The LED that indicates automatic address setting is in progress turns OFF and the process is stopped.
(Automatic address setting is completed when LEDs 1 and 2 on the outdoor unit control PCB turn OFF.)
↓
4
↓
5
Next turn the power ON only for the indoor and outdoor units of the next (different) system. Repeat steps 1 – 3 in the same
way to complete automatic address settings for all systems.
Operation from the remote controllers is now possible.
* To perform automatic address setting from the remote controller, perform steps 1 and 2, then use the remote controller
complete automatic address setting.
Refer to “Automatic Address Setting from the Remote Controller.”
ON
ON
OFF
1
2
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Mini VRF SYSTEM
Address Settings
1
3. Auto Address Setting
1-8
Case 3A
Automatic Address Setting in Heating Mode
Indoor and outdoor unit power cannot be turned ON for each system separately.
In the following, automatic setting of indoor unit addresses is not possible if the compressors are not operating.
Therefore perform this process only after completing all refrigerant tubing work.
Automatic Address Setting from Outdoor Unit
1
Case 2 .
2
↓
3
Perform steps 1 and 2 in the same way as for
Turn the indoor and outdoor unit power ON at all systems.
To perform automatic address setting in
Heating mode , on the outdoor unit control PCB in the refrigerant system
where you wish to set the addresses, short-circuit the automatic address pin (CN-A.ADD) for 1 second or longer, then
pull it out. (Be sure to perform this process for one system at a time. Automatic address settings cannot be performed
for more than one system at the same time.)
↓
(Communication for automatic address setting begins, the compressors turn ON, and automatic address setting
in heating mode begins. )
(All indoor units operate.)
↓
* To cancel, again short-circuit the automatic address pin (CN-A.ADD) for 1 second or longer, then pull it out.
The LED that indicates automatic address setting is in progress turns OFF and the process is stopped.
(Automatic address setting is completed when the compressors stop and LEDs 1 and 2 on the outdoor unit control
PCB turn OFF.)
↓
4
↓
(Repeat the same steps to complete automatic address setting for all units.)
↓
5
At the outdoor unit in the next (different) system, short-circuit the automatic address pin (CN-A.ADD) for 1 second or
longer, then pull it out.
Operation from the remote controllers is now possible.
* To perform automatic address setting from the remote controller, perform steps 1 and 2, then use the remote
controller complete automatic address setting.
Refer to “Automatic Address Setting from the Remote Controller.”
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Mini VRF SYSTEM
Address Settings
3. Auto Address Setting
1
1-9
Case 3B
Automatic Address Setting in Cooling Mode
Indoor and outdoor unit power cannot be turned ON for each system separately.
In the following, automatic setting of indoor unit addresses is not possible if the compressors are not operating.
Therefore perform this process only after completing all refrigerant tubing work.
Automatic address setting can be performed during Cooling operation.
Automatic Address Setting from Outdoor Unit
1
Case 2 .
2
↓
3
Perform steps 1 and 2 in the same way as for
Turn the indoor and outdoor unit power ON at all systems.
To perform automatic address setting in Cooling mode , on the outdoor unit control PCB in the refrigerant system
where you wish to set the addresses, short-circuit the cooling side of the mode change 3P pin (CN-MODE).
At the same time, short-circuit the automatic address pin (CN-A.ADD) for 1 second or longer, then pull it out.
(Be sure to perform this process for one system at a time. Automatic address settings cannot be performed for more
than one system at the same time.)
↓
(Communication for automatic address setting begins, the compressors turn ON, and automatic address setting
in Cooling mode begins.)
(All indoor units operate.)
↓
* To cancel, again short-circuit the automatic address pin (CN-A.ADD) for 1 second or longer, then pull it out.
The LED that indicates automatic address setting is in progress turns OFF and the process is stopped.
(Automatic address setting is completed when the compressors stop and LEDs 1 and 2 on the outdoor unit control
PCB turn OFF.)
↓
4
↓
↓
5
At the outdoor unit in the next (different) system, short-circuit the automatic address pin (CN-A.ADD) for 1 second or
longer, then pull it out.
(Repeat the same steps to complete automatic address setting for all units.)
Operation from the remote controllers is now possible.
* Automatic address setting in Cooling mode cannot be done from the remote controller.
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Mini VRF SYSTEM
Address Settings
1
3. Auto Address Setting
1-10
* Automatic address setting in cooling mode cannot be done from the remote controller.
3-2. Automatic Address Setting from the Remote Controller *
<Procedure of CZ-RTC2>
Selecting each refrigerant system individually for automatic address setting
---Automatic address setting for each system: Item code “A1”
---Automatic address setting for each system: Item code “A1”
1. Press the remote controller timer time
button and
button at the
same time. (Press and hold for 4 seconds or longer.)
2. Next, press either the temperature setting
or
button.
(Check that the item code is “A1.”)
3. Use either the
or
button to set the system No. to perform
automatic address setting.
4. Then press the
button.
(Automatic address setting for one refrigerant system begins.)
(When automatic address setting for one system is completed, the
system returns to normal stopped status.) <Approximately 4 – 5 minutes
is required.> (During automatic address setting, “
” is displayed on
the remote controller. This message disappears when automatic address
setting is completed.)
5. Repeat the same steps to perform automatic address setting for each
successive system.
SETTING
<Procedure of CZ-RTC3>
1.
Keep pressing the
,
and
for 4 or more seconds.
buttons simultaneously
The “Maintenance func” screen appears on the LCD display.
2.
Press the
or
button to see each menu.
If you wish to see the next screen instantly, press the
or
button.
Select “9. Auto address” on the LCD display and press the
button.
3.
The “Auto address” screen appears on the LCD display.
Change the “Code no.” to “A1” by pressing the
or
button.
4.
Select the “O/D unit no.” by pressing the
or
button.
Select one of the “O/D unit no.” for automatic address by pressing the
or
button.
Then press the
button.
Approximately about 10 minutes are required.
When automatic address setting is completed, the units return to normal stopped status.
Maintenance func
10. Set elec. consumption
12. Check touch key
Sel.
Page [
] Confirm
20:30 (THU)
11. Set touch key
9. Auto address
Auto address
Code no.
O/D unit no.
Sel.
Next
20:30 (THU)
1
A1
CZ-RTC3
CZ-RTC2
START
[
]
20:30 (THU)
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