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Model
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
2-27
4. Remote Controller Servicing Functions
n  Sensor Temperature Display Function 
(displayed regardless of whether unit is 
operating or stopped)
The procedure below displays the sensor 
temperatures from the remote controller, indoor unit, 
and outdoor unit on the remote controller.
<Procedure of CZ-RTC2>
À  
Press and hold the 
 and 
 buttons 
simultaneously for 4 seconds or longer.
Á  
The unit No. “X-X” (main unit No.), item code “XX” 
(sensor address), and servicing monitor “ 
 ” 
(sensor temperature) are displayed on the remote 
controller LCD display. (See Fig. 2-12 at right.)
  
Press the temperature setting 
 / 
 
buttons and select the item code to the address of 
the sensor to monitor.
(For the relationships between the sensor 
addresses and sensor types, refer to the table of 
temperature sensors and addresses on the next 
page.)
Ã
   If group control is in effect, press the 
 
button to select the unit to monitor.
Press the temperature setting  buttons to select the 
item code to change.
Ä
   Press the 
 button to return to normal remote 
controller display.
1
2
3
4
5
*  
Display shows a discharge temperature of 85°C at 
unit No. 1-1.
Fig. 2-12
NOTE
The temperature display appears as “- - - -” for units 
that are not connected.
*  
If monitor mode is engaged while normal operation 
is in progress, only the parts of the LCD display 
shown in the figure will change. Other parts continue 
to display the same information as during normal 
operation.
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Mini VRF SYSTEM
Remote Controller Functions
2
2-28
4. Remote Controller Servicing Functions
<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 "5. Sensor info." on the LCD display and 
press the 
 button.
Select the “Unit no.” by pressing the 
 or 
 button for changes.
Then press the 
 button.
Display sensor information of the unit.
Refer the information by pressing the 
 or 
 button.
Fig. 2-13
CZ-RTC3
Maintenance func
1. Outdoor unit error data
2. Service contact
3. RC setting mode
4.Test run
Sel.
Page [
] Confirm
20:30 (THU)
Maintenance func
5. Sensor info.
6. Servicing check
8. Detailed settings
Sel.
Page [
] Confirm
20:30 (THU)
7. Simple settings
Sensor info.
Unit no.
Code no.
Data
Sel.
Next
20:30 (THU)
01
02
00
0028
0026
0026
1-1
Sensor info.
Unit no.
Code no.
Data
Scroll
20:30 (THU)
01
02
00
0028
0026
0026
1-1
Sensor info.
Unit no.
Code no.
Data
Scroll
20:30 (THU)
01
02
00
0028
0026
0026
1-1
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Mini VRF SYSTEM
Remote Controller Functions
2
2-29
4. Remote Controller Servicing Functions
Location where
sensor is installed
Sensor
address
Sensor type
Sensor type 
Indoor unit
Indoor unit intake
temp.
Indoor unit heat exchanger
temp. (E1)
Outdoor unit heat exchanger
temperature (C1)
—
Indoor unit heat exchanger
temp. (E3)
Discharge air temp.
Discharge air temp. setting
Indoor unit MOV position
—
Outdoor unit
High-pressure sensor
temp.
Suction temp. (TS)
Outside air temperature
Inverter primary current
—
—
Sensor Temperature Relationship Table
Room temp.   *1
Remote controller
temp.
Discharge temp. (TD)
*1  Main unit only in case of group control.
Sensor
address
MOV1 position
Actual operating Frequency
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– MEMO –
2-30
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