YVAA Style A Air-Cooled Screw Liquid Chillers ... - Johnson Controls
YVAA Style A Air-Cooled Screw Liquid Chillers ... - Johnson Controls
YVAA Style A Air-Cooled Screw Liquid Chillers ... - Johnson Controls
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SECTION 8 - MICROPANEL<br />
96<br />
UNIT STATUS<br />
UNIT SWITCH OFF SHUTDOWN<br />
This message indicates the UNIT SWITCH is in the<br />
OFF position and not allowing the unit to run.<br />
UNIT STATUS<br />
DAILY SCHEDULE SHUTDOWN<br />
This message indicates that either the daily or holiday<br />
schedule programmed is keeping the chiller from<br />
running.<br />
UNIT STATUS<br />
REMOTE CONTROLLED SHUTDOWN<br />
This message indicates that either an ISN or RCC has<br />
turned the chiller OFF and is not allowing it to run.<br />
UNIT STATUS<br />
FLOW SWITCH SHUTDOWN<br />
This message indicates the flow switch is not allowing<br />
the chiller to run. There is a 1 second delay on this safety<br />
to assure the flow switch did not momentarily open.<br />
UNIT STATUS<br />
VSD COOLING SHUTDOWN<br />
This message indicates the chiller is shutdown, but<br />
running all the condenser fans, VSD glycol pump, and<br />
VSD fan in an effort to bring the internal VSD ambient<br />
temperature down to an acceptable level before allowing<br />
the chiller to start.<br />
SYS X REMOTE RUN CONTACT IS OPEN<br />
This message indicates the remote start/stop contact between<br />
2 and 15 or 2 and 16 of the 1TB terminal block is<br />
open. There is a 1 second delay on this safety to assure<br />
the remote contacts did not momentarily open.<br />
SYS X SYSTEM SWITCH IS OFF<br />
This message indicates the system switch (software via<br />
keypad) is turned OFF. The system will not be allowed to<br />
run until the system switch is turned ON via the keypad.<br />
SYS X NOT RUNNING<br />
This message indicates the system is not running because<br />
the chilled liquid is below the setpoint or the<br />
micro has not loaded the lead system far enough into<br />
the loading sequence to bring the lag system ON. This<br />
FORM 201.28-NM1.1<br />
ISSUE DATE: 8/29/2012<br />
message will be displayed on the lag system until the<br />
loading sequence is ready for the lag system to start.<br />
SYS X COOLING DEMAND SHUTDOWN<br />
This message is only displayed in the Normal Shutdown<br />
History display to indicate a capacity control<br />
shutdown.<br />
SYS X COMPRESSOR RUNNING<br />
This message indicates the system is running as a result<br />
of cooling demand.<br />
SYS X SHUTTING DOWN<br />
The compressor shutting down message indicates the respective<br />
system is ramping down in speed prior to shutting<br />
OFF. This message is displayed after the software<br />
run signal is disabled until the VSD notifies the Chiller<br />
Control Board the compressor is no longer running.<br />
SYS X ANTI-RECYCLE TIMER = XXX SEC<br />
This message indicates the amount of time left on the<br />
respective system anti-recycle timer and the system is<br />
unable to start until the timer times out.<br />
SYS X DISCHARGE PRESSURE LIMITING<br />
The Discharge Pressure Limiting message indicates<br />
the discharge pressure load limit or discharge pressure<br />
unloading is in effect.<br />
SYS X SUCTION PRESSURE LIMITING<br />
The Suction Pressure Limiting message indicates the<br />
suction pressure load limit or suction pressure unloading<br />
is in effect.<br />
SYS X MOTOR TEMP LIMITING<br />
The Motor Temp Limiting message indicates the motor<br />
temp load limit or motor temp unloading is in effect.<br />
SYS X MOTOR CURRENT LIMITING<br />
The motor current limiting message indicates the motor<br />
current load limit or motor current unloading is in<br />
effect.<br />
JOHNSON CONTROLS