Service manual

CONTROL SYSTEM
11. CONTROL SYSTEM
11.1 Abbreviations
Abbreviation Definition
A/C
Air Condition
BMS
Building Management System
PWR
System Power
CTT
Compressor Top Temperature sensor
DCI
DC Inverter
EEV
Electronic Expansion Valve
HE
Heating Element
HMI
Human Machine Interface
HST
Heat Sink Temperature sensor
Hz
Hertz (1/sec) – electrical frequency
ICT
Indoor Coil Temperature (RT2) sensor
IDU
Indoor Unit
MCU
Micro Controller Unit
OAT
Outdoor Air Temperature sensor
OCT
ODU Coil Temperature sensor
ODU
Outdoor Unit
OFAN
Outdoor Fan
PFC
Power Factor Corrector
RAC
Residential A/C
RC
Reverse Cycle (Heat Pump)
RGT
Return Gas Temperature sensor
RPS
Rounds per second (mechanical speed)
RV
Reverse Valve
SB,STBY
Stand By
SUCT
Compressor Suction Temperature sensor
S/W
Software
TBD
To Be Defined
TMR
Timer
Revision 0
11-1