York YCAS0098EB Installation Operation & Maintenance page 151

Air-cooled liquid chillers
Hide thumbs Also See for YCAS0098EB:
Table of Contents

Advertisement

H I G H
A M B I E N T
C U T O U T
=
1 3 0 . 0
This message indicates the High Ambient Temperature
Cutout at the time of the fault.
L O W
A M B I E N T
C U T O U T
=
2 5 . 0 ° F
This display shows the Low Ambient Cutout pro-
grammed at the time of the fault.
L E A V I N G
L I Q U I D
C U T O U T
=
3 6 . 0 ° F
This display shows the Low Leaving Chilled Liquid
Cutout programmed at the time of the fault.
H I G H
M O T O R
U N L O A D
-
1 0 0 %
This message shows the programmed %FLA Motor
Current Unload at the time of the fault.
L O C A L / R E M O T E
L O C A L
This message shows whether remote or local communi-
cations was selected at the time of the fault.
L E A D / L A G
C O N T R O L
A U T O M A T I C
This message displays the lead/lag selection pro-
grammed at the time of the fault.
L C H L T
=
4 4 . 1
R C H L T
=
5 2 . 9
This message indicates the leaving and return chilled
liquid temperature at the time of the fault.
M C H L T
=
4 3 . 8
This message indicates the mixed water temperature
at the time of the fault. A mixed water sensor may be
present when multi-unit sequencing is utilized. If no
mixed water temperature sensor is installed, the display
will not appear.
JOHNSON CONTROLS
T E M P
° F
T E M P
T E M P
C U R R E N T
F L A
M O D E
° F
° F
° F
S E T P O I N T
R A N G E
=
+ / -
This message displays the programmed chilled liquid
setpoint and deviation (control range) programmed at
the time of the fault.
A M B I E N T
7 7 . 6 ° F
This message indicates the outdoor Ambient Air Tem-
perature at the time of the fault.
L E A D
S Y S T E M
S Y S T E M
N U M B E R
This message indicates which system was in the lead at
the time of the fault.
E V A P
P U M P
E V A P
H E A T E R
This message indicates the status of both the evaporator
pump signal from the microprocessor and the evaporator
heater.
A C T I V E
R E M O T E
N O N E
This message indicates that a remote device such as a
Remote Control Center, an ISN controller, or another
device sending a PWM signal for temperature or current
temperature or current reset is overriding control points
programmed through the keypad or default micropro-
cessor setpoints.
System Data:
Following the Common Data is a sequence of twenty
information displays which are given twice, first for
System 1, then for System 2. In each example, "#" is
used to indicate System number:
S Y S
#
C O M P R E S S O R
I S
This message indicates whether the compressor on this
system was ON or OFF at the time of the fault.
FORM 201.18-NM7
=
4 4 . 0 ° F
2 . 0 ° F
A I R
T E M P
I S
1
I S
O N
I S
O F F
C T R L
O N
151
8

Advertisement

Table of Contents
loading

Table of Contents