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U-4LE1E5 U-4LE1E8 U-5LE1E5 U-5LE1E8 U-6LE1E5 U-6LE1E8
Pages
127
Size
7.25 MB
Type
PDF
Document
Service Manual
Brand
Device
Air Conditioner / MINI VRF SYSTEM
File
u-4le1e5-u-4le1e8-u-5le1e5-u-5le1e8-u-6le1e5-u-6le.pdf
Date
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Mini VRF SYSTEM
Remote Controller Functions
2
2-23
3. Detailed Settings Function
How to set the external static pressure
1.  Keep pressing the 
, 
 and 
 buttons 
simultaneously for 4 or more seconds.
The “Maintenance func” screen appears on the LCD 
display.
Maintenance func
1. Outdoor unit error data
2. Service contact
3. RC setting mode
4.Test run
Sel.
Page [
] Confirm
20:30 (THU)
2. Press 
the 
 or 
 button to see each menu. 
If you wish to see the next screen instantly, press the 
 or 
 button.
Select “8. Detailed settings” on the LCD display and 
press the 
 button.
Maintenance func
5. Sensor info.
6. Servicing check
7. Simple settings
8. Detailed settings
Sel.
Page [
] Confirm
20:30 (THU)
    The “Detailed settings” screen appears on the LCD 
display.
Select the “Unit no.” by pressing the 
 or 
 
button for changes.
Detailed settings
Unit no.
Code no.
Set data
B0
3-1
0001
Sel.
Next
20:30 (THU)
3.  Select the “Code no.” by pressing the 
 or 
 
button.
Change the “Code no.” to “B0” by pressing the 
 
or 
 button (or keeping it pressed).
Detailed settings
Unit no.
Code no.
Set data
1
0
0
0
1
-
3
Sel.
Next
20:30 (THU)
B0
4.  Select the “Set data” by pressing the  
 or 
 
button.
Select one of the “Set data” among “0001” – “0015” 
according to the desired external static pressure 
setting by pressing the  
 or 
 button.
Then press the 
 button.
(See the table below. For details, refer to the section 
“8. EXTERNAL STATIC PRESSURE SETTING” of the 
Installation Instructions.)
    When setting to auto airflow volume control:
Select the setting data to “-002”.
Then press the 
 button.
Indoor unit
Item code
B0
15, 22, 28, 36, 45, 
56, 60, 73, 90
106, 140, 160
External static pressure of the rated air 
fl ow volume (Pa)
150
0015
140
0014
130
0013
120
0012
100
0011
70
0008
60
0006
50
0005
30
0003
10
150
140
130
120
110
100
70
50
30
10
0001
No auto airfl ow volume setting
-001
Auto airfl ow volume setting
-002
5.  Select the “Unit no.” by pressing the 
 or 
 
button and press the 
  button.
The “Exit detailed settings and restart?” (Detailed 
setting-end) screen appears on the LCD display. 
Select “YES” and press the 
 button.
When the setting is completed, perform the test run 
for the external static pressure setting described in 
“Auto External Static Pressure Setting Operation”.
Detailed settings
Unit no.
Code no.
Set data
10
1-1
0001
Sel.
Next
20:30 (THU)
Exit detailed settings
and restart?
NO
YES
<Procedure of CZ-RTC3>
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Mini VRF SYSTEM
Remote Controller Functions
2
2-24
4. Remote Controller Servicing Functions
The remote controller includes a number of servicing functions. Use these as needed for test runs and 
inspections.
List of Servicing Functions
Functions
 Description
Button operation
Reset operation
Unit status
Test run
Operation with 
forced thermostat 
ON
Press and hold the 
 button 
for 4 seconds or longer.
Press the 
 
button.
Current operation is 
maintained.
Sensor 
temperature 
display
Temperature 
display from each 
sensor
Press and hold the 
 and 
 buttons for 4 seconds or 
longer.
Servicing check 
display
Alarm history 
display
Press and hold the 
 and 
 buttons for 4 seconds or 
longer.
Simple settings
Filter life time, 
operating mode 
priority, central 
control address, 
and other settings
Press and hold the 
 and 
 buttons for 4 seconds or 
longer.
When settings are made 
from a remote controller, 
the indoor unit where that 
remote controller is 
connected stops.
Detailed settings
System address, 
indoor unit address, 
central control 
address, and other 
settings
Press and hold the 
, 
and 
 buttons for 4 seconds 
or longer.
Automatic 
address
Automatic address 
setting based on 
command from 
the wired remote 
controller
Press and hold the 
 and 
the timer operation 
 buttons 
for 4 seconds or longer.
Automatic reset
Entire system stops.
Address change
Change of indoor 
unit address
Press and hold the 
 and 
the timer operation 
 buttons 
for 4 seconds or longer.
Press the 
 
button.
•
CZ-RTC2
Fig. 2-8
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Mini VRF SYSTEM
Remote Controller Functions
2
2-25
4. Remote Controller Servicing Functions
<Function of CZ-RTC3>
Display of "maintenance function" screen
1
 Keep pressing the 
 , 
 and 
buttons simultaneously for 4 or more seconds.
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.
Maintenance func
1. Outdoor unit error data
2. Service contact
3. RC setting mode
4.Test run
Sel.
Page [
] Confirm
20:30 (THU)
Fig. 2-9
List of Servicing Functions
Functions
Description
Menu selection
Reset operation
Unit status
Test run
Operation with forced 
thermostat ON
4. Test run
Press the 
 
button.
Sensor temperature 
display
Temperature display from 
each sensor
5. Sensor info
Servicing check 
display
Alarm history display
6. Service check
Simple settings
Filter lifetime, operating 
mode priority, central control 
address, and other settings
7. Simple settings
Press the 
 
button. 
(Restart)
When settings are 
made from a remote 
controller, the indoor 
unit where that 
remote controller is 
connected stops.
Detailed settings
System address, indoor 
unit address, central control 
address, and other settings
8. Detailed settings
Automatic address
Automatic address setting 
based on command from the 
wired remote controller
9. Auto address
Automatic reset
Entire system stops.
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Mini VRF SYSTEM
Remote Controller Functions
2
2-26
4. Remote Controller Servicing Functions
Test Run Function
Operates the unit with the thermostat forced ON.
<Procedure of CZ-RTC2>
Press and hold the 
 button for 4 seconds or 
longer.
 “TEST” appears on the remote controller LCD 
display (Fig. 2-10).
Start operation.
 Press the 
 button to return to normal remote 
controller display.
Fig. 2-10
Fig. 2-11
2
2
3
3
1
1
4
4
CZ-RTC2
CZ-RTC3
<Procedure of CZ-RTC3>
1
 Keep pressing the 
 , 
 and 
 
buttons simultaneously for 4 or more seconds.
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 "4. Test run" on the LCD display and press 
the 
 button.
Change the display from OFF to ON by pressing 
the 
 or 
 button. Then press the 
 
button.
Maintenance func
1. Outdoor unit error data
2. Service contact
3. RC setting mode
4.Test run
Sel.
Page [
] Confirm
Sel.
Page [
] Confirm
20:30 (THU)
Maintenance func
1. Outdoor unit error data
2. Service contact
3. RC setting mode
4.Test run
20:30 (THU)
[
] Confirm
Test run
Change
20:30 (THU)
Test run
ON
3
 Press the 
 button. “TEST” will be displayed 
on the LCD display.
 
4
 Press the 
 button. Test run will be started.
 Test run setting mode screen appears on the LCD 
display.
TEST
START
[
]
20:30 (THU)
TEST
20:30 (THU)
COOL
MODE
FAN SPEED
FLAP
START
[
]
20:30 (THU)
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