2WAY SYSTEM 
Remote Controller Functions
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3. Remote Controller Servicing Functions
5
2WAY SYSTEM
Remote Controller Functions
3. 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.
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CZ-RTC2
Fig. 8
SM830204-05_2WAY SYS.indb   21 2015/01/23   11:57:31