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

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