Carrier SmartVu control - Page 119

SRDC-UG-2-14-000
REVISION
DATE
PAGE
19 Series Carrier®
SmartVu
TM
–
Controls IOM
2.3
Dec 4, 2020
119 OF 168
119
Temperature Reset sensor resistance or
voltage drop.
Check for proper wiring to CCM J4-13 & J4-
14.
Alt-121
ALT-121 Sensor Alert -
Auto Water Temp Reset
As above
As above
CheckTemp 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
As above
As above
20mA 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.
Alt-123
ALT-123 Sensor Alert -
VFD Speed Out Of
Range
As above
As above
Check VFD speed feedback input in ISM
Alt-124
ALT-124 Sensor Alert -
Humidity Sensor
As above
As above
Check humidity sensor input in IOB
Alt-125
ALT-125 Sensor Alert -
Refrigerant Leak Input
As above
As above
Check refrigerant leak optional input in IOB
Alt-126
ALT-126 Sensor Alert –
Diffuser Pos Feedback
As above
As above
Check Diffuser Position feedback
Alt-127
ALT-127 Sensor Alert -
VFD Current Input
As above
As above
Check VFD current input
Alt-128
ALT-128 Sensor Alert -
High Cond Water
Pressure
As above
As above
Check optional condenser water pressure
sensor
Check condenser water flow
Alt-129
ALT-129 Sensor Alert -
Leaving Cond Water
Temp
As above
As above
LEAVING CONDENSER WATER
temperature sensor reading is out of range.
Check LEAVING CONDENSER WATER
sensor resistance or voltage drop..
Check for proper wiring to IOB. Check for
grounded sensor leads.
Alt-130
ALT-130 Sensor Alert -
Entering Cond Water
Temp
As above
As above
Entering Condenser Water temperature
sensor reading is out of range. Check
Entering Condenser Water sensor
resistance or voltage drop..
Check for proper wiring to IOB. Check for
grounded sensor leads.
Alt-131
ALT-131 Sensor Alert -
Entering Cond Water
Press
As above
As above
Check Entering Condenser Water pressure
sensor voltage drop..
Check for proper wiring to IOB. Check for
grounded sensor leads.
Alt-132
ALT-132 Sensor Alert -
Entering Chilled Water
Press
As above
As above
Check Entering Chilled Water pressure
sensor voltage drop..
Check for proper wiring to IOB. Check for
grounded sensor leads.
Alt-133
ALT-133 Sensor Alert -
Leaving Cond Water
Press
As above
As above
Check Leaving Condenser Water pressure
sensor voltage drop..
Check for proper wiring to IOB. Check for
grounded sensor leads.
Alt-134
ALT-134 Sensor Alert -
Leaving Chilled Water
Press
As above
As above
Check Leaving Chilled Water pressure
sensor voltage drop..
Check for proper wiring to IOB. Check for
grounded sensor leads.
Alt-135
ALT-135 Sensor Alert -
Guide Vane 1 Position
As above
As above
Check guide vane 1 position feedback