Alarm Message

Severity

Action Required

 

 

 

Suction Pressure Sensor Failure

Warning

• Make sure the sensor is connected properly.

 

 

• If the problem persists, replace the sensor or contact APC at a

 

 

number on the back cover of this manual.

 

 

 

Dischrg Pressure Sensor Failure

Warning

• Make sure the sensor is connected properly.

 

 

• If the problem persists, contact APC at a number on the back cover

 

 

of this manual.

 

 

 

Input Contact Fault

Warning

• Make sure the Input Normal state is defined correctly in the

 

 

Configure Unit> Discrete I/O screen. See page 17 for more

 

 

information.

 

 

• Clear the problem that caused the input contact switch to change

 

 

from the normal state.

 

 

• If the problem persists, contact APC at a number on the back cover

 

 

of this manual.

 

 

 

Persistent High Discharge

Critical

• Indicates there were three High Discharge Pressure shutdowns in

Pressure Fault

 

30 minutes. Alarms must be cleared manually.

 

 

• If the problem persists, contact APC at a number on the back cover

 

 

of this manual.

 

 

 

Persistent Low Suction Pressure

Critical

• Indicates there were 3 Low Suction Pressure shutdowns in 30

Fault

 

minutes. Alarms must be cleared manually.

 

 

• If the problem persists, contact APC at a number on the back cover

 

 

of this manual.

 

 

 

Cannot Start Due to Low

Critical

• The unit cannot start because the suction (low side) refrigerant

Suction Pressure

 

pressure is too low.

 

 

• For assistance, contact APC at a number on the back cover of this

 

 

manual.

 

 

 

Superheat too Low

Warning

• For assistance, contact APC at a number on the back cover of this

 

 

manual.

 

 

 

Rack Inlet

Critical

• Make sure the Rack Inlet setting is correct in the Set Unit

(Rack Inlet Temperature High

 

Threshlds screen.

Threshold)

 

• If the problem persists, contact APC at a number on the back cover

 

 

of this manual.

 

 

 

Supply Air

Critical

• Make sure the Supply Air setting is correct in the Set Unit

(Supply Air Temperature High

 

Threshlds screen.

Threshold)

 

• If the problem persists, contact APC at a number on the back cover

 

 

of this manual.

 

 

 

Return Air

Critical

• Make sure the Return Air setting is correct in the Set Unit

(Return Air Temperature

 

Threshlds screen.

HighThreshold)

 

• If the problem persists, contact APC at a number on the back cover

 

 

of this manual.

 

 

 

InRow RD 10 kW Air Cooled Operation and Maintenance

31

Page 39
Image 39
APC ACRD101, ACRD100 manual Configure Unit Discrete I/O screen. See page 17 for more