APC Fan InRow User Manual

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InRow SC Operation40
Troubleshooting
Problem Possible Cause Corrective Action
Fans fail to start
• Cooling Unit shutdown due
to an external command
• Temporarily remove the user contact cable, if it is
connected.
• Single fan fails to start • Confirm that the fan is seated properly and fully engaged.
• Replace the fan if it is faulty.
Cooling unit cannot
achieve setpoint
• Improper placement of
remote temperature sensor
• Verify that the remote temperature sensor is properly
located in the IT rack.
• Dirty filter • Clean the filter.
• Dirty coil • Clean the coil.
• Application error • Contact APC Worldwide Customer Support at a number on
the back cover of this manual.
• Heat load is too far away • Place the cooling unit closer to the heat load.
Water carryover
• Improper fan speed selected • Select the next highest fan speed setting. For example,
change the fan speed setting from Low to Med/Low.
• Room humidity is too high • Adjust setpoint on dehumidifying equipment.
• Add additional dehumidifying equipment.
• Dirty coil • Clean the coil.
• Dirty filter • Clean the air filter.
• Room humidity is too high • Adjust setpoint on dehumidifying equipment.
• Improve room sealing.
Cooling unit noise
level is higher than
expected
• Improper fan speed selected • Select a lower fan speed.
• Incorrect placement of rack
inlet sensor
• Verify that the rack inlet sensor is properly located in the
cold aisle.
Temperature control
not precise enough
• Improper placement of
remote temperature sensor
• Verify that the remote temperature sensor is properly
located in the IT rack.
Water outside of
Cooling unit
• Condensate drain hose is not
connected or not properly
routed outside the cooling
unit
• Verify that the condensate drain hose is properly connected
to the pump and properly routed outside of the cooling unit.
• Verify that the condensate drain line does not exceed 4.9
meters (16.0 feet) lift and 15.2 meters (50.0 feet) horizontal
run.
• Leak in drain system • Locate and repair the leak.
• Cooling unit not leveled
properly
• Adjust the leveling feet of the cooling unit.
• Damaged piping insulation • Identify damaged area and repair the insulation.

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