Carrier AquaEdge 19XR Controls Operation And Troubleshooting page 46

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