113
Table 16 — ICVC Primary and Secondary Messages and
Custom Alarm/Alert Messages with Troubleshooting Guides (cont)
K. ISM ALARMS (cont)
*[LIMIT] is shown on the ICVC as the temperature, pressure, voltage, etc., set point predefined or selected by the operator as an override, alert, or
alarm condition. [VALUE] is the actual pressure, temperature, voltage, etc., at which the control tripped. "Exceeded Limit" in Alarm or Alert mes-
sages may mean the value is above or below a threshold.
ICVC
FAULT
STATE
PRIMARY MESSAGE SECONDARY MESSAGE PRIMARY CAUSE
ADDITIONAL
CAUSE/REMEDY
217 PROTECTIVE LIMIT
MOTOR OVERLOAD TRIP 217->Motor Overload Trip; Check ISM
Configurations
Any phase current > 108% RLA for excessive time
period. Alarm can result from significant load side
current imbalance when running at full load. Check
ISM_HIST screen. Check entering condenser
water temperature and water flow rate. Check
MOTOR RATED LOAD AMPS and STARTER
LRA RATING in ISM_CONF screen. VFD applica-
tions only: Any phase current > 120% for exces-
sive time period.
218 PROTECTIVE LIMIT
MOTOR LOCKED ROTOR TRIP 218->Motor Locked Rotor Amps
Exceeded;Check Motor and ISM Config
Any LINE CURRENT > MOTOR LOCKED
ROTOR TRIP for excessive time while running
after the LOCKED ROTOR START DELAY has
expired. Check MOTOR LOCKED ROTOR TRIP
and MOTOR CURRENT CT RATIO in ISM_CONF
screen. Check motor nameplate data. Check
ISM_HIST screen. Check motor wiring and motor
winding resistance. Temporarily enable SINGLE
CYCLE DROP OUT to capture power distur-
bances.
219 PROTECTIVE LIMIT
STARTER LOCK ROTOR TRIP 219->Starter Locked Rotor Amps Rating
Exceeded
Any LINE CURRENT > STARTER LRA RATING.
Check STARTER LRA RATING and MOTOR
CURRENT CT RATIO in ISM_CONF screen.
Check ISM_HIST screen. Check starter label data.
Check motor wiring and motor winding resistance.
220 PROTECTIVE LIMIT
GROUND FAULT 220->Ground Fault Trip; Check Motor
and Current Transformers
Any GROUND FAULT current > GROUND FAULT
CURRENT threshold for a duration > GROUND
FAULT PERSISTENCE after the GROUND
FAULT START DELAY has expired. Check these
settings and GROUND FAULT CT RATIO in
ISM_CONF screen. Check ISM_HIST screen.
Confirm that ground fault current transformer ori-
entation is correct and that the correct motor leads
have been routed through the ground fault current
transformers in the right direction. Check for con-
densation on motor terminals or inside of motor
leads. Check motor power leads for phase to
phase or phase to ground shorts. Disconnect
motor from starter and megger motor windings to
ground and phase to phase. Call Carrier Service.
221 PROTECTIVE LIMIT
PHASE REVERSAL TRIP 221-> Phase Reversal Trip; Check
Power Supply
The ISM has detected that the input power is
phased BAC instead of ABC. Confirm that the
phase sequence wired to ISM terminal block J3 is
consistent with the power wiring to the starter.
Swap two power leads at the starter.
222 PROTECTIVE LIMIT
LINE FREQUENCY TRIP 222->Line Frequency - [VALUE]
exceeded limit of [LIMIT]*; Check Power
Supply.
LINE FREQUENCY FAULTING in ISM_CONF
screen is enabled and the LINE FREQUENCY has
deviated approximately 7% from nominal value.
Check ISM_HIST screen. Check FREQUENCY =
60 HZ? In ISM_CONF screen. Check line fre-
quency. If operating from a generator, check gen-
erator size and speed.
223 PROTECTIVE LIMIT
STARTER MODULE FAILURE 223->Starter Module Hardware Failure Internal ISM power supply is outputting incorrect
voltage. Check ISM status lights. Confirm that 115
V is applied to terminals J1-LL1 and J1-LL2. Con-
firm that excessive voltage has not been improp-
erly applied to any of the ISM terminals before
installing replacement ISM.
224 PROTECTIVE LIMIT
1CR START CIRCUIT FAULT 224->Check 115v Wiring to 1CR (ISM)
and to 1M Coil
The 1M aux contact is open for an excessive time
following a start command and the CONDENSER
PRESSURE < 160 PSI. Check High Pressure
Relay contacts and 115 V wiring leading to ISM
J9-1. Check 115 V wiring leading from ISM J9-2 to
the 1M aux coil and base. Check the 24V circuit
leading from power panel terminal 50 to the 2C
aux contact and High Pressure Switch. Check the
24V circuit leading from power panel terminals 17
and 43 leading to the High Pressure Relay coil and
base.
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