Service manual
11-4
CONTROL SYSTEM        
Revision Y06-02 Service Manual - KN Series
11.2 Control Function 
11.2.1 Abbreviations 
AC - Alternate Current 
A/C - Air-Conditioner 
ANY  - ON or OFF status 
CLOCK  - ON/OFF Operation Input, (dry contact) 
COMP - Compressor 
CPU  - Central Processing Unit 
CTV - Compensation Temperature Value 
HE - Heating Element 
HPC  - High Pressure Control 
H/W - Hardware 
ICP  - Indoor Condensation Pump 
ICT  - Indoor Coil Temperature (RT2) sensor 
IF, IFAN - Indoor Fan 
IR - Infrared 
LEVEL1 - Normal Water Level 
LEVEL2/3 - Medium/High Waterlevel 
LEVEL4 - Overflow Level 
Max - Maximum 
Min - Minimum 
min  - Minute (time) 
NA - Not Applicable 
OCP  - Outdoor Condensation Pump 
OCT  - Outdoor Coil Temperature (RT3) sensor 
OF, OFAN  - Outdoor Fan 
OPER - Operate 
Para. - Paragraph 
RAT - Return Air Temperature (RT1) sensor 
RC  - Reverse Cycle (Heat Pump) 
R/C - Remote Control 
RCT - Remote Control Temperature 
RH - Resistance Heater 
RT - Room Temperature (i.e. RCT in IFEEL mode, RAT other
wise) 
RV  - Reversing Valve 
SB, STBY - Stand-By 
sec - Second (time) 
Sect - Section 
SH - Supplementary Heater 
SPT  - Set Point Temperature 
ST - Standard (Model with Cooling Only) 
S/W - Software 
TEMP - Temperature 
W/O - Without 
'T  - The difference between SPT and RT. 
in Heat Mode:  'T = SPT - RT 
in Cool/Dr
y
/Fan Mode:  'T = RT – SPT 
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