Carrier SmartVu Control Manual page 108

Alm-265 ALM-265 Protective
Limit - Refrigerant Leak
Alm-266 ALM-266 Protective
Limit - IOB Low
Voltage
Alm-267 ALM-267 Protective
Limit - Guide Vane 1
Fault
Alm-268 ALM-268 Protective
Limit - Damper Valve
Fault
Alm-269 ALM-269 Protective
Limit - Envelope
Control Valve Fault
Alm-270 ALM-270 Protective
Limit - High Cond
Water Flow
Alm-271 ALM-271 Protective
Limit - Emergency Stop
Alm-272 ALM-272 Protective
Limit - ISM Config
Conflict
Alm-273 ALM-273 Protective
Limit - Swift Restarts
Limit Exceeded
Alm-274 ALM-274 Protective
Limit –Chiller Lockout
Alm-275 ALM-275 Protective
Limit – Fire Alarm
Alm-276 ALM-276 Protective
Limit –Stop Override
SRDC-UG-2-14-000
19 Series Carrier®
–
TM
SmartVu
Controls IOM
Manual As above
Automatic As above
Manual As above
Manual As above
Manual As above
Manual As above
Automatic As above
Automatic As above
Manual As above
Automatic As above
Automatic As above
Manual As above
REVISION DATE
2.3 Dec 4, 2020
Check diffuser schedule and guide vane
schedule in SRD Configuration screen.
Check for proper operation of diffuser and
inlet guide vane actuators including inlet
guide vane calibration.
Check diffuser actuator coupling for
rotational slip.
Check for electrical noise in IOB Diffuser
Pressure wiring. Do not continue to
operate compressor except for diagnostic
purposes.
REFRIGERANT LEAK OPTION is
Enabled and the REFRIGERANT LEAK
SENSOR output exceeded
REFRIGERANT LEAK ALARM mA.
Check for refrigerant leaks. Check leak
detector for proper operation. Check
REFRIGERANT LEAK ALARM mA setting
in the OPTIONS screen. Check 4-20 mA
or 1-5 V output from refrigerant leak
sensor to IOB J15-5Confirm that IOB SW2
dip switch 1 is in the correct position.
Check IOB 24VAC power supply and the
transformer output voltage
Alarm before start indicates guide vane
opening has not closed to less than 4%.
Alarm while running indicates guide vane
position is < -1% or > 103%. Enter Quick
Calibration and conduct Guide Vane
Calibration. Check wiring between the
guide vane feedback potentiometer and
IOB terminals. Check the ohm guide vane
position feedback potentiometer or 4-
20mA current
Check damper valve wirings
Check Envelope Control valve wirings
Check condenser water pressure sensor
and wirings
Check EMSTOP command form network
and the remote stop dry contact from IOB
Configuration data in controller and ISM
are mismatch.
In maintains menu, choose "maintains
ISM config" ->"Delete ISM config"
NO – upload ISM configuration data to
HMI
YES– download ISM configuration to ISM
Check the reason why swift restart
happens so frequently.
Check chiller lockout input in IOB
Check fire alarm input in IOB
Check stop override point status in
GENUNIT table
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