46
Table 18 — PIC 5 Alert Codes
ALERT CODE
(ALARMRST)
ALERT TEXT
DESCRIPTION
RESET TYPE
ACTION TAKEN
BY CONTROL
POSSIBLE CAUSE
PRESTART ALERTS
Alt-100
ALT-100 Prestart Alert —
Starts Limit Exceeded
Automatic when the situation
returns to normal
Turn on Alert relay.
Check STARTS IN 12 HOURS in Run times
screen.
Enable “Enable Excessive Starts” option in Ser-
vice menu if additional start is required.
NOTE: Recycle restarts and auto restarts after
power failure are not counted in Starts Limit.
Alt-101
ALT-101 Prestart Alert —
Low Oil Temperature
Automatic when the situation
returns to normal
Alert relay is ON.
Check OIL SUMP TEMP in default screen.
Check oil heater contactor/relay and power.
Check oil sump temperature sensor wiring and
accuracy.
Check oil level and oil pump operation.
Check EVAP SAT TEMP.
Alt-102
ALT-102 Prestart Alert —
High Condenser Pressure
Automatic when the situation
returns to normal
Alert relay is ON.
Check CONDENSER PRESSURE.
Check condenser pressure transducer wiring
and accuracy.
Check for high condenser water temperatures.
Check COND PRESS OVERRIDE in
configuration.
Alt-103
ALT-103 Prestart Alert —
Excessive Recycle Starts
Automatic when the situation
returns to normal
Alert relay is ON.
Chiller load is too low to keep compressor on
line and there have been more than 5 starts in 4
hours.
Increase chiller load, adjust hot gas bypass to
open at a higher load, increase recycle
RESTART DELTA T in service menu.
Check hot gas bypass isolation valve position.
Alt-104
ALT-104 Prestart Alert —
Waiting for Start Permission
Automatic when the situation
returns to normal
Alert relay is ON.
Power request option is enabled.
SENSOR ALERTS
Alt-120
Alt-120 Sensor Alert —
Remote Temperature Out of
Range
Automatic when the situation
returns to normal
Alert relay is ON.
Type 2 Temperature Reset is Enabled and
remote temperature reset sensor is out of range.
Check ENABLE RESET TYPE and TEMPERA-
TURE RESET settings in TEMP_CNTL screen.
Check remote temperature reset sensor resis-
tance or voltage drop.
Check for proper wiring to IOB.
Check IOB channel type configurations and
SW2 dip switch setting in IOB.
Alt-121
Alt-121 Sensor Alert — Auto
Water Temp Reset
Automatic when the situation
returns to normal
Alert relay is ON.
Check Temp Reset Configuration.
Confirm that Auto Water Temp Reset Input is
between 4 mA and 20 mA.
Confirm that wiring to IOB connector is not
grounded.
Alt-122
Alt-122 Sensor Alert — Auto
Demand Limit Input
Automatic when the situation
returns to normal
Alert relay is ON.
20 mA DEMAND LIMIT OPT is Enabled, Ice
Build is not Active, and Auto Demand Limit Input
on IOB is < 2 mA.
Check 20 mA DEMAND LIMIT OPT and
DEMAND LIMIT AT 20 mA in Service screen.
Confirm that Auto Demand Limit Input is
between 4 mA and 20 mA.
Confirm that wiring to IOB connector is not
grounded.
Check IOB channel type configurations and
SW2 dip switch setting in IOB.
Alt-123
Alt-123 Sensor Alert — VFD
Speed Out of Range
Automatic when the situation
returns to normal
Alert relay is ON.
Check VFD speed feedback input in ISM
Alt-124
Alt-124 Sensor Alert —
Humidity Sensor
Automatic when the situation
returns to normal
Alert relay is ON.
Check humidity sensor input in IOB
Alt-125
Alt-125 Sensor Alert —
Refrigerant Leak Input
Automatic when the situation
returns to normal
Alert relay is ON.
Check refrigerant leak optional input in IOB
Alt-126
Alt-126 Sensor Alert — Dif-
fuser Pos Feedback
Automatic when the situation
returns to normal
Alert relay is ON.
Check diffuser position feedback.
Alt-127
ALT-127 Sensor Alert —
VFD Current Input
Automatic when the situation
returns to normal
Alert relay is ON.
Check VFD current input
Alt-128
Alt-128 Sensor Alert — High
Cond Water Pressure
Automatic when the situation
returns to normal
Alert relay is ON.
Check optional condenser water pressure sen-
sor.
Check condenser water flow.
Alt-129
Alt-129 Sensor Alert —
Leaving Cond Water Temp
Automatic when the situation
returns to normal
Alert relay is ON.
Leaving condenser water temperature sensor
reading is out of range.
Check leaving condenser water sensor resis-
tance or voltage drop.
Check for proper wiring to IOB.
Check IOB channel type configurations.
Alt-130
ALT-130 Sensor Alert —
Entering Cond Water Temp
Automatic when the situation
returns to normal
Alert relay is ON.
Entering condenser water temperature sensor
reading is out of range.
Check entering condenser water sensor resis-
tance or voltage drop.
Check for proper wiring to IOB.
Check IOB channel type configurations.
Alt-131
ALT-131 Sensor Alert —
Entering Cond Water Press
Automatic when the situation
returns to normal
Alert relay is ON.
Check entering condenser water pressure sen-
sor voltage drop.
Check for proper wiring to IOB.
Check IOB channel type configurations.
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