York YCAS Series Installation Operation & Maintenance page 165

Repetitively pressing the !" Keys allows scrolling
through the information available in the Safety Shut-
down buffer. This is divided into Chill er Data and Indi-
vidual System Data displays as follows:
Chiller Data:
S Y S 1 N O F A U L T S
S Y S 2 H I G H
This message indicates the fault that caused the shut-
down; in this case, a high motor current in System 2
was the cause of the shutdown.
S 1 - 1 C H I L L E D
W A T E R
This message displays the type of chilled liquid se lect ed
(water or glycol) at the time of the fault.
S 1 - 2 A M B I E N T
L O W A M B I E N T
This display indicates whether standard or low am bi ent
operation was selected at the time of the fault.
S 1 - 3 R E F R I G E R A N T
R - 4 0 7 C
This message indicates the type of refrigerant that was
programmed at the time of the fault (R-22 or R407C).
S 1 - 4 Y C A S
This message indicates the type of Chiller (YCAS or
YCWS) programmed at the time of the fault. (MUST
BE IN YCAS MODE)
S 1 - 5 M O T O R
A V E R A G I N G
This message indicates whether motor current averaging
at start-up is enabled or disabled.
S 1 - 6 H E A T
D I S A B L E D
This message indicates whether heat recovery is dis-
abled or enabled. (HEAT RECOVERY MUST BE
DISABLED)
YORK INTERNATIONAL
M T R C U R R
L I Q U I D
C O N T R O L
C U R R E N T
D I S A B L E D
R E C O V E R Y
S 1 - 7 E X P A N S I O N
E L E C T R O N I C
This message indicates whether electronic or thermo-
static expansion valve is selected for EEV operation.
(ELECTRONIC MUST BE SELECTED) Remote
evaporator systems will be programmed for thermo-
static.
D I S C H A R G E
C U T O U T = 3 9 5 . 0
This message indicates the discharge pressure cut-out
programmed at the time of the fault.
D I S C H A R G E
U N L O A D = 3 7 5 . 0
This display provides the discharge pressure unload
point, programmed at the time of the fault.
S U C T I O N P R E S S U R E
C U T O U T = 4 4 . 0
This message displays the suction pressure cut-out pro-
grammed at the time of the fault.
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 Tem per a ture
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
Cut out 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.
FORM 201.19-NM8 (804)
V A L V E
P R E S S U R E
P S I G
P R E S S U R E
P S I G
P S I G
T E M P
° F
T E M P
T E M P
C U R R E N T
F L A
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