84
Control Test — The Control Test feature can check all the
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
Terminate Lockout feature ends the Pumpdown/Lockout after
the pumpdown procedure is reversed and refrigerant is added.
LEGEND TO TABLES 16A-16J
Table 16 — Alarm and Alert Messages
A. MANUAL STOP
B. READY TO START
C. IN RECYCLE SHUTDOWN
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
PRIMARY MESSAGE SECONDARY MESSAGE PROBABLE CAUSE/REMEDY
MANUALLY STOPPED — PRESS CCN OR LOCAL TO START PIC III in OFF mode, press CCN or LOCAL softkey to start unit.
TERMINATE PUMPDOWN MODE TO SELECT CCN OR LOCAL Enter the CONTROL TEST table and select TERMINATE LOCKOUT
to unlock compressor.
SHUTDOWN IN PROGRESS COMPRESSOR UNLOADING Chiller unloading before shutdown due to soft/stop feature.
SHUTDOWN IN PROGRESS COMPRESSOR DEENERGIZED Chiller compressor is being commanded to stop. Water pumps are
deenergized within one minute.
ICE BUILD OPERATION COMPLETE Chiller shutdown from Ice Build operation.
SHUTDOWN IN PROGRESS RECYCLE RESTART PENDING Chilled water temperature below recycle set point. Cooling load is
less than chiller minimum capacity.
PRIMARY MESSAGE SECONDARY MESSAGE PROBABLE CAUSE/REMEDY
READY TO START IN XX MIN UNOCCUPIED MODE Time schedule for PIC III is unoccupied. Chillers will start only when
occupied. Check OCCPCnnS and Holidays screens.
READY TO START IN XX MIN REMOTE CONTACT OPEN Remote contacts are open. Close contacts to start.
READY TO START IN XX MIN STOP COMMAND IN EFFECT Chiller START/STOP on MAINSTAT manually forced to stop. Release
SUPERVISOR force to start.
READY TO START IN XX MIN OCCUPIED MODE Chiller timer counting down. Unit ready to start.
READY TO START IN XX MIN REMOTE CONTACT CLOSED Chiller timer countdown complete. Unit will proceed to start. Remote
contact Enabled and Closed.
READY TO START IN XX MIN START COMMAND IN EFFECT Chiller START/STOP on MAINSTAT manually forced to start. Release
SUPERVISOR force to start under normal control.
READY TO START IN XX MIN RECYCLE RESTART PENDING Chiller is recycle mode.
READY TO START UNOCCUPIED 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.
READY TO START REMOTE CONTACT OPEN Remote contacts have stopped the chiller. Close contacts to start.
READY TO START STOP COMMAND IN EFFECT Chiller START/STOP on MAINSTAT manually forced to stop. Release
SUPERVISOR force to start.
READY TO START OCCUPIED MODE Chiller timers countdown is complete. Unit will proceed to start.
READY TO START REMOTE CONTACT CLOSED Chiller timer counting down. Unit ready to start.
READY TO START START COMMAND IN EFFECT Chiller START/STOP on MAINSTAT has been manually forced to
start. Chiller will start regardless of time schedule or remote contact
status.
STARTUP INHIBITED LOADSHED IN EFFECT CCN loadshed module commanding chiller to stop.
PRIMARY MESSAGE SECONDARY MESSAGE PROBABLE CAUSE/REMEDY
RECYCLE RESTART PENDING OCCUPIED MODE Unit in recycle mode, chilled water temperature is not sufficiently
above Setpoint to start.
RECYCLE RESTART PENDING REMOTE CONTACT CLOSED Unit in recycle mode, chilled water temperature is not sufficiently
above Setpoint to start.
RECYCLE RESTART PENDING START COMMAND IN EFFECT Chiller START/STOP on MAINSTAT manually forced to start, chilled
water temperature is not sufficiently above Setpoint to start.
RECYCLE RESTART PENDING ICE BUILD MODE Chiller in ICE BUILD mode. Chilled water temperature is satisfied for
ICE BUILD conditions.
To Next Page
Need help?
General