Chapter 7 Maintenance 95
SmartCabinet Series Solution Product for IDC or Computer Rooms User Manual
Fault phenomenon
Possible cause
Check or remedy
Water leakage
detective belt sensor
alarm
There are water in the detection belt area
Check the leaking place in the computer room
AC condensate water leakage
Check that the connection of the condensate water
pipes is reliable
PDU over-load alarm
PDU exceeds the load setpoint
Check the actual load power of single PDU
The power distribution or the PDU output
has a short circuit
Check and clear up the risk of short circuit
Fan cannot start
Fan doesn
’t run normally
Check whether the fan MCB is closed
Fan is faulty
Call the customer service hotline of Vertiv
AC high pressure
alarm
Insufficient condensing airflow
Remove debris from coil and air inlet; flush the
condenser fin
Condenser fan not operating
Check that the cable connections of the outdoor unit are
tight; check that the condensate pressure sensor works
normally
Low pressure alarm
Refrigerant leakage
Check for leaking place and re-charge refrigerant
Outdoor ambient temperature too low
Call the customer service hotline of Vertiv
Outdoor unit fan running at full speed upon
low outdoor ambient temperature
Check that the L1 is connected with L in fan speed
controller; check that the condensate pressure sensor is
connected with the fan speed controller tightly
High temperature
alarm
High temperature setpoint is unreasonable
Reset the setpoint of high temperature alarm
Use in overload
Check the actual thermal power of the equipment in the
cabinet
Low temperature
alarm
Low temperature setpoint is unreasonable
Reset the setpoint of low temperature alarm