York YCAS0098EB Installation Operation & Maintenance page 152

Air-cooled liquid chillers
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S Y S
#
R U N
1 - 3 - 4 8 - 1 7
This message shows the Run Time logged on the system
since the last compressor start, in Days (D), Hours (H),
Minutes (M), and Seconds (S).
S Y S
#
M O T O R
This message indicates the compressor motor current in
as a percentage of Full Load Amps.
S Y S
#
O I L =
S T =
9 . 0
D T = 1 2 3 . 7
This message shows the system differential oil pressure
at the time of the fault.
S Y S
#
O I L =
S P =
6 2
D P =
This message indicates the system oil line temperature
at the time of the fault.
S #
S A T
S U C T
S U C T
S H E A T
These messages indicate compressor suction gas satura-
tion temperature and superheat at the time of the fault.
S #
S A T
D S C H =
D S C H
S H E A T
This message indicate compressor discharge gas satura-
tion temperature and superheat at the time of the fault.
152
T I M E
D - H - M - S
C U R R E N T
7 8 %
F L A
1 5 4 . 8
° F
° F
6 5
P S I G
2 7 1
P S I G
= 3 4 . 7 ° F
= - 6 . 5 ° F
1 2 9
° F
< - 8 . 4 ° F
S Y S
#
S V
S T E P
This message indicates the compressor slide valve po-
sition at the time of the fault. 0 steps equals minimum
capacity and 75 steps equals fully loaded.
S Y S
#
C O O L E R
R E F R I G
T E M P
This message, which is only displayed if the unit is in
R-407c mode, indicates the refrigerant temperature at
the inlet of the cooler.
S Y S
#
L L S V
E C O N
T X V
S O L
This message indicates the Liquid Line Solenoid Valve
and the economizer Thermal Expansion Valve Solenoid
Valve position: ON = Energized / OFF = De-Energized
(OFF) at the time of the fault.
S Y S
#
F A N
C O M P
H E A T E R
This message indicates the stage of condenser fan op-
eration on the system and the status of the compressor
heater at the time of the fault. See Section 8.4 for details
of fan staging.
=
4 0
I N L E T
=
2 8 . 2 ° F
I S
O N
I S
O F F
S T A G E
3
I S
O F F
JOHNSON CONTROLS

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