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15
2. Operation and Maintenance
Alarm/Fault Reason Action(s)
Suction Temperature Sensor
Failure
Variable causes (ensure
condenser signal wiring is
intact)
Replace as necessary
Supply Temperature Sensor
Failure
Suction Pressure Sensor
Failure
Discharge Pressure Sensor
Failure
Return Temperature Sensor
Failure
Return Humidity Sensor
Failure
Liquid Pipe Temperature
Sensor Failure
Heater Fault (if equipped)
FAQ
Symptom Reason Action(s)
Water Leak Condensate management system leak Consider powering off the cooler and
turning on a different one until the leak
can be diagnosed
Leak detected from another source If leak detection is installed, check to
see if it is triggered by another source
Cooler Discharging Warm Air Excessive heat, not enough cooling Turn on additional In-Row Coolers
Cooling system in standby Fans may rotate while In-Row Cooler
is in standby. If the other coolers are
operational, no action is required
Refrigerant leak / compressor failure Contact technician to diagnose
Cooler Not Responding / Not Turning On Boot sequence Wait for system to finish boot sequence
Initializing Sometimes it takes a while for the
system to initialize; wait a minute or two
and check again
Loss of Cooling Group control not set up properly Configure group control (see group
control section)
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