Johnson Controls YEWS Series, Installation, Operation And Maintanance Instructions

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5.4.2 Home Interface
On the home interface:
Pressing the F1 to F4 key will enter into 4 sub-interfaces
of
“
INFO
” “
SET
” “
TIME
”
and
“
FAIL
”
separately.
The first line of the main interface will display the current
date and time.
LCL/LHL: In AC and ITS mode, it's the leaving
condenser cooling liquid temperature. In heap-pump
mode, it's the leaving condenser hot water temperature is
displayed, which should be regarded as the control
reference in HP mode..
ECL/EHL:
In AC and ITS mode, it's the enter condenser
cooling liquid temperature. In heap-pump mode, it's the
enter condenser hot water temperature is displayed.
LEL: Leaving evaporator liquid temperature, which
should be regarded as the control reference in AC&ITS
mode.
WELCOME TO USE YORKCHILLER
YEWS Screw chiller
INFO
SET
TIME
FAIL
HEAT
2 0 0 6 / 0 0 / 0 0 0 0 : 0 0 : 0 0 S a t
5.4 Instructions of Display Interface
5.4.1 Initialization Interface
A JOHNSON CONTROLS COMPANY
OFF MODE
OPH
LHL
ENL
LIMT
LEL
EEL
COMM. SYS1 ON SYS2 ON 01#
UNIT TYPE AC UNIT
COMP STA LOW DISH HOLD
SAT.EVAP.T
SAT.DIS.T
DIS.SUPERHEAT
UL.COEF,
ANTI-RECYC TIMELEFT 100S
25.0
℃
25.0
℃
25.0
℃
100.0%
RETU
NEXT
18.0
＾
C
18.0
＾
C
18.0
＾
C
18.0
＾
C
EEL:Entering evaporator liquid temperature.
MODE: Current operation mode of the unit
ON/OFF:
Display the startup and stop status, which
should be displayed as ON when unit is running, and be
displayed as OFF while unit is standby.
OPH&LIMT: Flash display the unit status, no display if
there is no relevant operation status.
FAIL: Flash diaplay if there is fault, no display if without
fault.
The start and stop operation can only be done on the
home interface.
5.4.3 Status Display
In the home interface, enter into the display interface
upon pressing F1 key , while in the display interface, the
operation instructions for the keys are as follows:
(1) Status display interface-1
Press F1 to return to the main interface.
Press F4 to enter into the next display interface.
COMM.STATUS:
If the communication between the ce-
ntralized controller and 1# main board is normal, SYS1
ON will be displayed, otherwise, SYS1 OFF will be dis-
played. If the communication between the centralized
controller and 2# main board is normal, SYS2 ON will be
displayed,otherwise, SYS2 OFF will be displayed.In sin-
gle compressor unit, SYS2 OFF always be displayed. In
single compressor unit,SYS1 ON only be used .
YEWS-E Water Cooling Screw Chiller/Heat Pump
25