Carrier AquaEdge 19XR Controls Operation And Troubleshooting page 42

ALARM
ALARM TEXT
CODE
DESCRIPTION
(ALARMRST)
ALM-407 ISM Fault —
Alm-407
Motor Locked Rotor Trip
ALM-408 ISM Fault —
Alm-408
Starter Lock Rotor Trip
ALM-409 ISM Fault —
Alm-409
Ground Fault
ALM-410 ISM Fault —
Alm-410
Phase Reversal Trip
ALM-411 ISM Fault — Line
Alm-411
Frequency Trip
ALM-412 ISM Fault —
Alm-412
Starter Module Reset
NOTE: Some alarm codes (identified in the Reset Type column) are
eligible for Swift Restart when the Auto Restart option is enabled.
Table 17 — PIC 5 Alarm Codes (cont)
RESET TYPE
INTEGRATED STARTER MODULE ALARMS (CONT)
Manual
Manual
Manual
Manual
Manual
Manual (Swift Restart eligible)
42
ACTION TAKEN
BY CONTROL
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
Unit shuts down. 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 disturbances.
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
Unit shuts down. 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 disturbances.
Any GROUND FAULT current >
GROUND FAULT CURRENT threshold
for a duration > GROUND FAULT PER-
SISTENCE 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 trans-
former orientation is correct, and that
Unit shuts down.
the correct motor leads have been
routed through the ground fault current
transformers in the right direction.
Check for condensation on motor termi-
nals or inside motor leads.
Check motor power leads for phase to
phase or phase to ground shorts.
Disconnect motor from starter and
merger motor windings to ground and
phase to phase. Call Carrier Service.
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
Unit shuts down.
with the power wiring to the starter.
Swap two power leads at the starter.
Check ISM Status under the Mainte-
nance Menu.
LINE FREQUENCY FAULTING in
ISM_CONF screen is enabled and the
LINE FREQUENCY has deviated
approximately 7% from nominal value.
Check ISM_HIST screen.
Unit shuts down.
Check FREQUENCY = 60 HZ? in
ISM_CONF screen.
Check line frequency.
If operating from a generator, check
generator size and speed.
AUTO RESTART OPTION in OPTIONS
screen is disabled and there was a tem-
porary loss of 115 v ISM control voltage
supply. Check ISM_HIST screen.
Check wiring leading to ISM terminals
J1-LL1 and J1-LL2.
Unit shuts down. Check control power circuit breaker,
control power transformer and control
power circuit fuses.
Monitor chiller utility power for disruptions.
Improve ISM ground connection; apply
measures to reduce electrical noise to ISM.
Consult power company.
The Swift Restart algorithm allows for quicker restart and decreases
the normal start-up delays and verification times.
POSSIBLE CAUSE