Johnson Controls YEWS Series, Installation, Operation And Maintanance Instructions

Page: 31 / 88

UNIT TYPE:
AC/ITS/HP
COMP STA: Compressor status,the displayed
information is as follows:
COMP OFF- The compressor is off.
STOPPING- The compressor is stopping
STARTING- The compressor is starting
HIGH DP UNLOAD- Discharge pressure is too high and
the compressor executes to unload
LOW EVAP UNLOAD- Evaporating pressure is too low
and the compressor executes to unload.
HIGH CUR UNLOAD- Current of compressor motor is
too high and the compressor executes to
unload.
LOW DISH UNLOAD- Discharge Superheat is too low
and the compressor executes to unload
LOW DISH HOLD- Discharge Superheat is too low and
the compressor executes to hold.
HIGH CUR HOLD - Current of compressor motor is too
high and compressor executes to hold.
HIGH DP HOLD- Discharge pressure is too high and the
compressor executes to hold.
HIGH DP UNLOAD- Discharge pressure is too high and
the compressor executes to unload.
MANUAL LOAD- Make the compressor executes to load
by manual control
MANUAL UNLOAD- Make the compressor executes to
unload by manual control
CAP HOLD- The compressor is holding
CAP LOAD- The compressor is loading
CAP UNLOAD- The compressor is unloading
HIGH DIST LOAD- Discharge temperature is too high
and the compressor executes to load.
MINIMUM LOAD- Current of compressor motor is
below minimum load setting, compressor executes to
load.
SAT.EVAP.T:
Saturation temperature of the refrigerant in
Evaporator.
SAT.DIS.T: Saturation temperature of the discharge
refrigerant.
DIS,SUPERHEAT: Discharge superheat equals to the
diacharge temperature minus the saturation temperature
of the discharge refrigerant.
ULCOEF: The value of compressor running current to
the unit FLA.
Note: In top right corner, the digital box can be
entered with setting values. This setting is for
switching display information of different system.
Enter 01 for displaying information of system1
and 02 for displaying information of system2, and
the same case for others. System 2 is only used in
the system with dual compressor (YEWS250).
(2) Status display interface-2
Press F1 to return to the main interface.
Press F3 to return to the previous display interface.
Press F4 to enter into the next display interface.
AI1 LHL
AI2 EHL
AI3 LEL
AI4 EEL
AI5 DIS.T
AI13 EVAP.P
AI14 DIS.P
AI15 OIL P
18.0
18.0
18.0
18.0
18.0
180KPa
180KPa
180KPa
℃
℃
℃
℃
℃
RETU
NEXT
BACK
01#
This interface displays the sampling value of AI analog
channel of the main board.
(3)Status Display Interface-3
Press F1 to return to the main interface.
Press F3 to return to the previous display interface.
Press F4 to enter into the next display interface.
YEWS-E Water Cooling Screw Chiller/Heat Pump
NOTE
26