Control Test - Carrier 19XRV Start-Up, Operation And Maintenance Instructions Manual

The Control Test feature can check all the
Control Test —
thermistor temperature sensors, pressure transducers, pumps
and their associated flow devices, the guide vane actuator, and
other control outputs such as tower fans, VFD cooling
solenoid, shunt trip relay, oil heaters, alarm relay, and hot gas
bypass. The tests can help to determine whether a switch is
defective or a pump relay is not operating, as well as other
useful troubleshooting issues. During pumpdown operations,
the pumps are energized to prevent freeze-up and the vessel
pressures and temperatures are displayed. The Pumpdown/
Lockout feature prevents compressor start-up when there is no
refrigerant in the chiller or if the vessels are isolated. The
A. MANUAL STOP
PRIMARY MESSAGE
MANUALLY STOPPED — PRESS
TERMINATE PUMPDOWN MODE
SHUTDOWN IN PROGRESS
SHUTDOWN IN PROGRESS
ICE BUILD
SHUTDOWN IN PROGRESS
B. READY TO START
PRIMARY MESSAGE
READY TO START IN XX MIN
READY TO START IN XX MIN
READY TO START IN XX MIN
READY TO START IN XX MIN
READY TO START IN XX MIN
READY TO START IN XX MIN
READY TO START IN XX MIN
READY TO START
READY TO START
READY TO START
READY TO START
READY TO START
READY TO START
STARTUP INHIBITED
C. IN RECYCLE SHUTDOWN
PRIMARY MESSAGE
RECYCLE RESTART PENDING
RECYCLE RESTART PENDING
RECYCLE RESTART PENDING
RECYCLE RESTART PENDING
Table 16 — Alarm and Alert Messages
SECONDARY MESSAGE
CCN OR LOCAL TO START
TO SELECT CCN OR LOCAL
COMPRESSOR UNLOADING
COMPRESSOR DEENERGIZED
OPERATION COMPLETE
RECYCLE RESTART PENDING
SECONDARY MESSAGE
UNOCCUPIED MODE
REMOTE CONTACT OPEN
STOP COMMAND IN EFFECT
OCCUPIED MODE
REMOTE CONTACT CLOSED
START COMMAND IN EFFECT
RECYCLE RESTART PENDING
UNOCCUPIED MODE
REMOTE CONTACT OPEN
STOP COMMAND IN EFFECT
OCCUPIED MODE
REMOTE CONTACT CLOSED
START COMMAND IN EFFECT
LOADSHED IN EFFECT
SECONDARY MESSAGE
OCCUPIED MODE
REMOTE CONTACT CLOSED
START COMMAND IN EFFECT
ICE BUILD MODE
Terminate Lockout feature ends the Pumpdown/Lockout after
the pumpdown procedure is reversed and refrigerant is added.
LEGEND TO TABLES 16A-16J
CCN — Carrier Comfort Network®
CCM — Chiller Control Module
DPI — Drive Peripheral Interface
ICVC — International Chiller Visual Control
PIC III — Product Integrated Controls III
TXV — Thermostatic Expansion Valve
VFD — Variable Frequency Drive
VFG — Variable Frequency (Drive) Gateway
PROBABLE CAUSE/REMEDY
PIC III in OFF mode, press CCN or LOCAL softkey to start unit.
Enter the CONTROL TEST table and select TERMINATE LOCKOUT
to unlock compressor.
Chiller unloading before shutdown due to soft/stop feature.
Chiller compressor is being commanded to stop. Water pumps are
deenergized within one minute.
Chiller shutdown from Ice Build operation.
Chilled water temperature below recycle set point. Cooling load is
less than chiller minimum capacity.
PROBABLE CAUSE/REMEDY
Time schedule for PIC III is unoccupied. Chillers will start only when
occupied. Check OCCPCnnS and Holidays screens.
Remote contacts are open. Close contacts to start.
Chiller START/STOP on MAINSTAT manually forced to stop. Release
SUPERVISOR force to start.
Chiller timer counting down. Unit ready to start.
Chiller timer countdown complete. Unit will proceed to start. Remote
contact Enabled and Closed.
Chiller START/STOP on MAINSTAT manually forced to start. Release
SUPERVISOR force to start under normal control.
Chiller is recycle mode.
Time schedule for PIC III is unoccupied in OCCPC01S screen.
Chiller will start when state changes to occupied. Make sure the time
and date are correct in the TIME AND DATE screen.
Remote contacts have stopped the chiller. Close contacts to start.
Chiller START/STOP on MAINSTAT manually forced to stop. Release
SUPERVISOR force to start.
Chiller timers countdown is complete. Unit will proceed to start.
Chiller timer counting down. Unit ready to start.
Chiller START/STOP on MAINSTAT has been manually forced to
start. Chiller will start regardless of time schedule or remote contact
status.
CCN loadshed module commanding chiller to stop.
PROBABLE CAUSE/REMEDY
Unit in recycle mode, chilled water temperature is not sufficiently
above Setpoint to start.
Unit in recycle mode, chilled water temperature is not sufficiently
above Setpoint to start.
Chiller START/STOP on MAINSTAT manually forced to start, chilled
water temperature is not sufficiently above Setpoint to start.
Chiller in ICE BUILD mode. Chilled water temperature is satisfied for
ICE BUILD conditions.
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