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