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FORM 160.55-O1 (604)
95
YORK INTERNATIONAL
“MOTOR PULLDOWN LIMIT”
The Pulldown Demand Limit Setpoint timer is in ef fect
and the Compressor Motor current is > the Pulldown
Demand Current Limit Setpoint value. The Pre-rotation
vane operation is being inhibited as de scribed in “ MO-
TOR – HIGH CURRENT LIMIT” message above.
START INHIBIT MESSAGES
“ANTI-RECYCLE XXMin/Sec”
The chiller is inhibited from starting because the 30
minute anti-recycle time has not yet elapsed. Time re-
main ing is displayed.
“VANE MOTOR SWITCH OPEN”
The chiller is inhibited from starting because the Pre-
rotation Vanes are not fully closed.
“MOTOR CURRENT >15% FLA”
The OptiView Control Center has detected a Com-
pres sor Motor Current of a magnitude that is >15% of
the chiller Full Load Amps for 10 continuous seconds,
while the chiller is shutdown. As long as this condi-
tion ex ists, the oil pump is turned on. This is generally
in dic a tive of a failure of the motor starter, Control
Cen ter start cir cuits or motor current feedback circuits.
After motor current is no long er detected, a SYS TEM
COASTDOWN is per formed. The chiller can be start ed
after motor current is no long er detected, the SYS TEM
COASTDOWN has com plet ed and the COM PRES SOR
switch is placed in the STOP-RE SET (O) po si tion.
“LCSSS – HIGH TEMPERATURE PHASE X
– STOPPED”
(Mod. “B” Solid State Starter only)
The chiller is stopped and the Liquid Cooled Solid
State Starter Logic/Trigger Board has detected that the
tem per a ture of phase A, B or C (designated as X in the
message) Silicon Controlled RectiÞ er (SCR) module is
>110°F. The starter cooling pump will run and the chill er
will be inhibited from starting until the tem per a ture de-
creas es to <109°F.
WARNING MESSAGES
“WARNING – REAL TIME CLOCK FAILURE”
During the initialization process that occurs when pow er
is applied to the OptiView Control Center, test data is
written to a location in the BRAM battery backed mem-
o ry device (IC location U52 on Microboard). This data
is then read from the BRAM and compared to the test
data. If the read data is not the same as that which was
written to the device, it is assumed the BRAM and Real
time Clock operation is defective and this mes sage is
dis played. The BRAM should be replaced by a qualiÞ ed
Service Technician. This message au to mat i cal ly clears
when the BRAM problem has been solved.
“WARNING – CONDENSER OR EVAP O RA TOR
XDCR ERROR”
The Evaporator pressure Transducer is indicating a high er
pressure than the Condenser pressure Trans duc er after the
chiller has been running for 10 minutes. This is in dic a tive
of a Condenser or Evaporator Trans duc er fail ure. This
message will be displayed until the condition clears and
the WARNING RESET Keypad key is pressed on the
home screen in OPERATOR (or high er) ac cess mode.
Condition not checked in Brine mode.
“WARNING – SETPOINT OVERRIDE”
A blank BRAM battery-backed memory device (IC
lo ca tion U52 on Microboard) or a failure of this device
was detected during the initialization process that oc-
curs when power is applied to the OptiView Control
Center. Due to this failure, any or all of the pro grammed
Setpoints could have been corrupted. Therefore, all Set-
points have been automatically changed to their Default
val ues. All Setpoints will have to be pro grammed to
their de sired values. This message will clear when the
WARN ING RESET key is pressed on the home screen
in OP ER A TOR (or high er) access mode.
“WARNING – CONDENSER – HIGH PRES SURE
LIMIT”
The Condenser Pressure exceeds the High Pressure
Warning Setpoint threshold, programmed by a Service
technician logged in at SERVICE access level. While
this condition is in effect, the Pre-rotation Vanes are
inhibited from further opening. This message au to -
mat i cal ly clears and the Vanes are permitted to open
when the Condenser pressure decreases to 0.1 PSIA
be low the Setpoint.
“WARNING – EVAPORATOR – LOW PRES SURE
LIMIT”
The Evaporator pressure has decreased to the Warn ing
threshold. This threshold is Þ xed in Water cooling ap pli -
ca tions. In Brine cooling applications, the thresh old is a
Þ xed amount above the programmable safety shut down
threshold. The Safety threshold in Brine ap pli ca tions is
determined by the Brine solution and is de ter mined by
the YORK Factory. While this condition is in effect,
the Pre-rotation Vanes are inhibited from fur ther open-
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