40
Table 17 — PIC 5 Alarm Codes (cont)
NOTE: Some alarm codes (identified in the Reset Type column) are
eligible for Swift Restart when the Auto Restart option is enabled.
The Swift Restart algorithm allows for quicker restart and decreases
the normal start-up delays and verification times.
ALARM
CODE
(ALARMRST)
ALARM TEXT
DESCRIPTION
RESET TYPE
ACTION TAKEN
BY CONTROL
POSSIBLE CAUSE
COMMUNICATION FAILURE
Alm-282
ALM-282 Protective Limit
— Displacement Switch
Manual Unit shuts down.
Check impeller displacement switch.
Alm-283
ALM-283 Protective Limit
— High Pressure Switch
Manual Unit shuts down.
Check high pressure switch.
Alm-284
ALM-284 Protective Limit
— Power Feedback Loss
Manual Unit shuts down.
Check Power Feedback Input.
Alm-296
ALM-296 Protective Limit
— High Evaporator
Pressure
Manual Unit shuts down.
Check evaporator pressure sensor
input.
Check evaporator pressure cutout
configurations.
Alm-300
ALM-300 Loss Communi-
cation with ISM
Automatic when communication
returns to normal (Swift Restart
eligible)
Unit shuts down.
Check LEN communication cable.
Check the wiring and termination resis-
tor settings.
Alm-301
ALM-301 Loss of Commu-
nication with IOB 1
Automatic when communication
returns to normal
Unit shuts down.
Check LEN communication cable.
Check the wiring and termination resis-
tor settings.
Alm-302
ALM-302 Loss of Commu-
nication with IOB 2
Automatic when communication
returns to normal
Unit shuts down.
Check LEN communication cable.
Check the wiring and termination resis-
tor settings.
Alm-303
ALM-303 Loss of Commu-
nication with IOB 3
Automatic when communication
returns to normal
Unit shuts down.
Check LEN communication cable.
Check the wiring and termination resis-
tor settings.
Alm-304
ALM-304 Loss of Commu-
nication with IOB 4
Automatic when communication
returns to normal
Unit shuts down.
Check LEN communication cable.
Check the wiring and termination resis-
tor settings.
Alm-305
ALM-305 Loss of Commu-
nication with IOB 5
Automatic when communication
returns to normal
Unit shuts down.
Check LEN communication cable.
Check the wiring and termination resis-
tor settings.
Alm-306
ALM-306 Loss of Commu-
nication with IOB 6
Automatic when communication
returns to normal
Unit shuts down.
Check LEN communication cable.
Check the wiring and termination resis-
tor settings.
Alm-307 ALM-307 LEN Scan Error Manual Unit shuts down.
Check LEN bus hardware physical wir-
ing and software log
Alm-308
ALM-308 Loss Communi-
cation with VFD
Automatic when communication
returns to normal
Unit shuts down.
Bus installation fault or defective slave
board
Alm-309
ALM-309 Loss Communi-
cation with VFD Gateway
(LEN)
Manual Unit shuts down.
Bus installation fault or defective slave
board
Alm-310
ALM-310 Loss Communi-
cation with VFD (Modbus)
Manual Unit shuts down.
Bus installation fault or defective slave
board
INTEGRATED STARTER MODULE ALARMS
Alm-400
ALM-400 ISM Fault — Line
Voltage Dropout
Manual (Swift Restart eligible) Unit shuts down.
Temporary loss of voltage. SINGLE
CYCLE DROPOUT in the ISM_CONF
screen is Enabled and two LINE VOLT-
AGES < 50% MOTOR RATED LINE
VOLTAGE.
Check ISM_HIST screen.
Disable Single Cycle Dropout in
VFD_CONF screen.
Alm-401
ALM-401 ISM Fault — Line
Phase Loss
Manual (Swift Restart eligible) Unit shuts down.
Any LINE VOLTAGE < 50% MOTOR
RATED LINE VOLTAGE, or there is an
excessive difference between the small-
est LINE CURRENT and the largest
LINE CURRENT.
Check the ISM_HIST screen.
Check MOTOR RATED LINE VOLT-
AGE in ISM_CONF screen.
Check phase to phase and phase to
ground power distribution bus voltage.
Check current transformer wiring lead-
ing to ISM terminal block J4 and line
voltage wiring leading to ISM terminal
block J3.
Check wiring and hardware between
building power supply and motor.
Current imbalance may improve if power
or motor leads are rotated in the same
phase sequence.
Consult power company.
Medium voltage applications only:
Check voltage potential transformers
and VOLT TRANSFORMER RATIO in
ISM_CONF screen.
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