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FORM 160.55-O1 (604)
97
YORK INTERNATIONAL
“WARNING – REFRIGERANT LEVEL OUT OF
RANGE”
(Flash Memory Card version C.MLM.02.02C.xxx
and earlier)
The output of the Condenser Refrigerant Level Sensor is
> 5.1VDC. This is indicative of a Level Sensor fail ure.
While this condition exists, the Refrigerant Vari able Or-
i Þ ce is driven to the full open po si tion. This mes sage
au to mat i cal ly clears when the Refrigerant Level sensor
out put is within range.
“WARNING - EXCESS SURGE DE TECT ED”
(Flash Memory Card version C.MLM.02.02.xxx
and later)
(Applies only if Surge Protection SHUTDOWN fea ture
is Disabled.) The Surge Window Count has ex ceed ed
the Count Lim it. Message can be manually cleared
after the Surge Win dow Count is <
the Count Limit,
the SHUT DOWN fea ture is Enabled or the chill er is
stopped. To clear mes sage press WARNING RE SET
key on HOME Screen when logged in at OP ER A TOR
(or higher) access lev el.
“WARNING – SURGE PROTECTION – EX CESS
SURGE LIMIT”
(Flash Memory Card version C.MLM.02.02.xxx
and later)
(Applies only if Surge Protection EXTENDED RUN
feature is Enabled.) Displayed during the Surge Pro tec -
tion 10 minute Ex tend ed Run period. This period begins
when the Surge Window Count exceeds the Count Lim it.
During this period, the Pre-rotation Vanes are driv en
closed. When 10 minutes have elapsed, this mes sage
and the Pre-rotation Vanes load inhibit are au to mat i cal ly
cleared. Message and load inhibit are also cleared when
the chill er is shutdown.
If the optional Hot Gas Bypass fea ture
is en abled, the valve position must be
at 100% be fore the Ex tend ed Run is
im ple ment ed. If the chiller is chill er is
equipped with a compressor motor Vari-
able Speed Drive, the output fre quen cy
must be at full speed (50 Hz/60 Hz) be-
fore this con trol can be im ple ment ed.
ROUTINE SHUTDOWN MES SAG ES
“REMOTE STOP”
A shutdown command has been received from a re-
mote device. Remote Stop commands can be received
in Dig i tal Remote mode via I/O Board TB4-7/8 or in
ISN (In te grat ed Systems Network) Remote mode via
the MicroGateway serial com mu ni ca tions.
“LOCAL STOP”
A local shutdown command has been received by plac-
ing the Keypad Start-Run-Stop/Reset Switch in the stop
(O) position.
“PLACE COMPRESSOR SWITCH IN RUN PO-
SI TION”
The OptiView Control Center is in either Digital or ISN
(In te grat ed Systems Network) Remote mode. The Op-
er a tor is requested to place the COMPRESSOR Switch
in the RUN position. The OptiView Control Center
will not ac cept a Remote start/stop command unless
the switch is in the RUN position.
CYCLING SHUTDOWN MESSAGES
“MULTIUNIT CYCLING – CONTACTS OPEN”
The Multiunit Cycling contacts connected to I/O Board
TB4-9, have opened to initiate a cycling shutdown. The
chiller will automatically restart when the contacts close.
“SYSTEM CYCLING – CONTACTS OPEN”
The System Cycling contacts connected to I/O Board
TB4-13, have opened to initiate a cycling shutdown.
The chiller will automatically restart when the contacts
close.
“OIL – LOW TEMPERATURE”
The oil temperature has decreased to < 55°F. The chill er
will automatically restart when the temperature in creas es
to > 71.0°F.
“CONTROL PANEL – POWER FAILURE”
A Control Power failure has occurred. If the power
fail ure occurred while the chiller was running, it will
au to mat i cal ly restart when power is restored. How ev er,
if the power failure duration was < the duration of the
ap pli ca ble “Coastdown” period (2.5 minutes standard;
15 minutes steam turbine) when power is restored, the
re main der of the “Coastdown” will be performed, prior
to the chiller starting. This mes sage can indicate a Cy-
cling (auto-restart after power failure) or Safety (man u al
re start after power failure) shutdown, depending upon
OptiView Con trol Center con Þ g u ra tion. It indicates a
cycling shut down when displayed in orange characters;
Safety shut down when displayed in red characters. The
OptiView Control Center is conÞ gured for auto-restart
or manual restart after power failure by a qualiÞ ed Ser-
vice Technician following in struc tions in YORK Ser vice
Manual 160.55-M1.
2