Problem

Possible Cause

Corrective Action

Local display is not operational, but cooling unit operates

• Local display not connected

• Verify that the local display cable is connected properly.

properly

 

Incorrect air

• False filter clogs

• Verify that the ends of the clear plastic air tubes are not

pressure

 

obstructed.

 

 

• Verify that the clear plastic air tubes are connected to the

 

 

controller.

 

 

• Verify that the clear plastic air tubes are not pinched.

 

 

 

Alarms do not

• External monitoring

• Confirm that power, if required, is being supplied to the

display on

equipment is not receiving

external equipment.

monitoring

power or is not functioning

• If the cooling unit is providing power (+12 V or +24 V) to

equipment

properly

the external equipment, verify that the external equipment

(Customer Output

 

is <20 mA.

Contact)

 

• Test the external equipment by bypassing the customer

 

 

output contact.

 

 

 

Cooling unit does

• Drive voltage

• Verify that there is a drive voltage entering the cooling unit.

not shutdown on

 

You may use the available +12 V or +24 V power located

command

 

near the cooling unit. You must then also use the ground.

 

 

 

No communication

• Improper connection

• Confirm that the cooling unit is connected to the BMS port

with building

 

and not to the Control port.

management system

 

• Make sure that the wire polarity is correct.

(BMS) port

 

Using a DC voltmeter, test the signal with no transmissions

 

 

in progress: Pin 2 should be greater than Pin 1 by at least

 

 

200 mV. Measure the cooling unit with the cable

 

 

disconnected, and then measure it again with the cable

 

 

connected. If the signal is less than 200 mV, the cooling unit

 

 

may be reverse-wired.

 

 

• Make sure that every cooling unit has either two sets of

 

 

wires in its connector OR one set of wires and a 150–ohm

 

 

resistor.

Cooling units are

• A-Link failure

not communicating

 

with each other

 

•Verify that the actual number of cooling units in the group matches the group number setting.

•Verify that the A-Link ports of every cooling unit have either two cables or one cable and a terminator.

•Confirm that the A-Link cables are connected to the A-Link ports and that a network cable is connected to the network port.

Output air is 17°C (62°F) and fans are running at a very high rate of speed.

•Upper or lower supply air sensor fault

•Either the upper or lower supply air temperature sensor has a fault. Verify that both supply air temperature sensors are installed and working properly.

InRow SC Operation

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APC ACSC101, ACSC100 manual Problem Possible Cause
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ACSC101, ACSC100 specifications

The APC ACSC100 and ACSC101 are power distribution units designed to manage and protect electronic equipment in data centers and critical infrastructure environments. Known for their reliability and efficiency, these models provide an essential solution for organizations that depend on constant power supply and equipment availability.

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In summary, the APC ACSC100 and ACSC101 are cutting-edge power distribution solutions built for reliability, efficiency, and protection. Their modular design, advanced monitoring technology, robust safety features, energy efficiency, and user-friendly interface make them ideal choices for businesses seeking dependable power management systems in critical environments. With these models, organizations can ensure that their electronic assets are well-protected and efficiently managed, leading to enhanced operational continuity.
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