Carrier SmartVu Control Manual page 119

Alt-121
ALT-121 Sensor Alert -
Auto Water Temp Reset
Alt-122
ALT-122 Sensor Alert -
Auto Demand Limit Input
Alt-123
ALT-123 Sensor Alert -
VFD Speed Out Of
Range
Alt-124
ALT-124 Sensor Alert -
Humidity Sensor
Alt-125
ALT-125 Sensor Alert -
Refrigerant Leak Input
ALT-126 Sensor Alert –
Alt-126
Diffuser Pos Feedback
Alt-127
ALT-127 Sensor Alert -
VFD Current Input
Alt-128
ALT-128 Sensor Alert -
High Cond Water
Pressure
Alt-129
ALT-129 Sensor Alert -
Leaving Cond Water
Temp
Alt-130
ALT-130 Sensor Alert -
Entering Cond Water
Temp
Alt-131
ALT-131 Sensor Alert -
Entering Cond Water
Press
Alt-132
ALT-132 Sensor Alert -
Entering Chilled Water
Press
Alt-133
ALT-133 Sensor Alert -
Leaving Cond Water
Press
Alt-134
ALT-134 Sensor Alert -
Leaving Chilled Water
Press
Alt-135
ALT-135 Sensor Alert -
Guide Vane 1 Position
SRDC-UG-2-14-000
19 Series Carrier®
–
TM
SmartVu
Controls IOM
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REVISION DATE
2.3 Dec 4, 2020
Temperature Reset sensor resistance or
voltage drop.
Check for proper wiring to CCM J4-13 & J4-
14.
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.
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.
Check VFD speed feedback input in ISM
Check humidity sensor input in IOB
Check refrigerant leak optional input in IOB
Check Diffuser Position feedback
Check VFD current input
Check optional condenser water pressure
sensor
Check condenser water flow
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.
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.
Check Entering Condenser Water pressure
sensor voltage drop..
Check for proper wiring to IOB. Check for
grounded sensor leads.
Check Entering Chilled Water pressure
sensor voltage drop..
Check for proper wiring to IOB. Check for
grounded sensor leads.
Check Leaving Condenser Water pressure
sensor voltage drop..
Check for proper wiring to IOB. Check for
grounded sensor leads.
Check Leaving Chilled Water pressure
sensor voltage drop..
Check for proper wiring to IOB. Check for
grounded sensor leads.
Check guide vane 1 position feedback
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