2WAY SYSTEM 
Remote Controller Functions
5 - 22
3. Remote Controller Servicing Functions
5
<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. 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.
2WAY SYSTEM
Remote Controller Functions
3. Remote Controller Servicing Functions
2WAY SYSTEM
Remote Controller Functions
3. 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. 10).
Start operation.
 Press the 
 button to return to normal remote 
controller display.
Fig. 10
Fig. 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)
SM830204-05_2WAY SYS.indb   22 2015/01/23   11:57:31