Specifications

81
Control Test — The Control Test feature can check all the
thermistor temperature sensors, pressure transducers, pumps
and their associated flow devices, the oil reclaim output, the
head pressure output, and other control outputs such as tower
fans, VFD cooling solenoid, shut trip relay, oil heaters, alarm
relay, and hot gas bypass. The tests can help to determine
whether a switch is defective or if a pump relay is not operat-
ing, 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 dis-
played. 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 FOR TABLES 15A-15J
Table 15 — ICVC Primary and Secondary Messages and
Custom Alarm/Alert Messages with Troubleshooting Guides
CCM — Chiller Control Module
CCN — Carrier Comfort Network
®
ICVC — International Chiller Visual Controller
CHL — Chilled Liquid
PIC III — Product Integrated Control III
VFD — Variable Frequency Drive
WSM — Water System Manager
A. MANUAL STOP
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. Liquid pumps are
deenergized within one minute.
ICE BUILD OPERATION COMPLETE Chiller shutdown from Ice Build operation.
SHUTDOWN IN PROGRESS RECYCLE RESTART PENDING Chiller is shutting down in recycle mode
B. READY TO START
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.
READY TO START IN XX MIN REMOTE CONTACTS OPEN Remote contacts are open. Close contacts on Terminal Block TB1 to start.
READY TO START IN XX MIN STOP COMMAND IN EFFECT Chiller START/STOP on MAINSTAT manually forced to stop.
Release force or send START 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 CONTACTS CLOSED Chiller timer counting down. Unit ready to start.
Remote contact enabled and closed.
The chiller will stop when the contacts are opened.
READY TO START IN XX MIN START COMMAND IN EFFECT Chiller START/STOP on MAINSTAT manually forced to start.
Release force to start under normal control.
READY TO START IN XX MIN RECYCLE RESTART PENDING Chiller in recycle mode.
READY TO START UNOCCUPIED MODE Time schedule for PIC III is unoccupied. Chiller will start when occupied.
Make sure the time and date are correct. Change values in TIME AND
DATE screen.
READY TO START REMOTE CONTACTS OPEN Remote contacts have stopped the chiller. Close contact on Terminal Block
TB1 to start.
READY TO START STOP COMMAND IN EFFECT Chiller START/STOP on MAINSTAT manually forced to stop. Release
point to start.
READY TO START OCCUPIED MODE Chiller timer count down complete, unit start will commence.
READY TO START REMOTE CONTACTS CLOSED Chiller timer count down complete. Unit ready for 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.
C. IN RECYCLE SHUTDOWN
PRIMARY MESSAGE SECONDARY MESSAGE PROBABLE CAUSE/REMEDY
RECYCLE RESTART PENDING OCCUPIED MODE
Unit in recycle mode, chilled liquid temperature is not sufficiently above
set point to start.
RECYCLE RESTART PENDING REMOTE CONTACTS CLOSED
Unit in recycle mode, chilled liquid temperature is not sufficiently above
set point to start.
RECYCLE RESTART PENDING START COMMAND IN EFFECT
Chiller START/STOP on MAINSTAT manually forced to start, chilled
liquid temperature is not sufficiently above set point to start.
RECYCLE RESTART PENDING ICE BUILD MODE
Chiller in ICE BUILD mode. Chilled liquid temperature is satisfied for ICE
BUILD conditions.