Troubleshooting

Problem

Possible Cause

Corrective Action

 

 

 

Fans fail to start

• Cooling Unit shutdown due

• Temporarily remove the user contact cable, if it is

 

to an external command

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

• Improper placement of

• Verify that the remote temperature sensor is properly

achieve setpoint

remote temperature sensor

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

• Improper fan speed selected

• Select a lower fan speed.

level is higher than

• Incorrect placement of rack

• Verify that the rack inlet sensor is properly located in the

expected

inlet sensor

cold aisle.

 

 

 

 

Temperature control

• Improper placement of

• Verify that the remote temperature sensor is properly

not precise enough

remote temperature sensor

located in the IT rack.

 

 

 

Water outside of

• Condensate drain hose is not

• Verify that the condensate drain hose is properly connected

Cooling unit

connected or not properly

to the pump and properly routed outside of the cooling unit.

 

routed outside the cooling

• Verify that the condensate drain line does not exceed 4.9

 

unit

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

• Adjust the leveling feet of the cooling unit.

 

properly

 

 

• Damaged piping insulation

• Identify damaged area and repair the insulation.

 

 

 

40

InRow SC Operation

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APC ACSC100, ACSC101 manual Troubleshooting, Problem Possible Cause Corrective Action

ACSC101, ACSC100 specifications

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