MULTI VRF-Ⅱ  INDOOR UNIT SERVICE MANUAL    EUROPEAN/LATIN AMETICA (R410A) 
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 Heavy pollution: The first digit is "3". If the second digit is "0", it 
indicates that the accumulated operating time is 100 hours. The 
accumulated operating time is added by 100 hours when the second 
digit is increased by "1". When the second digit is "9", the 
accumulated operating time is 1000 hours. 
System conservation operation 
settings 
00: comfortability preferred 
01: conservation preferred 
Defrosting period settings 
50: 50 minutes 
60: 60 minutes 
01-09: intelligent nighttime silent mode 
10-12: forcible silent mode 
Highest capacity output limitation 
settings 
08: highest energy consumption limitation being 80% 
09: highest energy consumption limitation being 90% 
10: no conservation limitation 
 
5.4 Engineering Application Functions Operated through the YAP1F Remote Controller 
The  YAP1F  remote  controller only  provides  engineering  application  functions  for  setting  the 
master  IDU.  For  other  user  operation  functions,  refer  to  the  "Remote  Controller  Operating 
Instructions". 
The method for setting the master IDU through the YAP1F remote controller is as follows: 
   
 
Turn on or turn off the unit 
Switch temperature displaying type on the unit’s display 
Set health function and air function