Vertiv Liebert CRV Plus, Руководство пользователя

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Vertiv | Liebert CRV + | User Manual 8 6
APPENDIX 5 - Troubleshooting of Common Startup
Faults
Fault
phenomena
Possible causes Corrective actions
Display board
does not turn on
upon startup
Failure of control board,
display board, and
transformer TC, or poor
connection of cables
Check the input voltage of J4-3 and 4 of display
board, and check the output voltage of the J12-1
and 2 of the control board (DC 12V).
Check the input voltage of J13 and J31 of the
control board, and check the output voltage of
the transformer TC (AC 24V)
Check the input voltage of TB1-14 and 16 of
transformer TC (AC 380V)
Upon startup,
the display
board is on and
there is no
display of words
Failure of control board,
display board, and
transformer TC, or poor
connection of cables
Check the control board voltage as above.
If the input voltage of display board is normal,
check the communication circuit connections of
J4-1 and 2 (display board) and J39-1 and 2
(control board).
Check if the blinking frequency of the LEDs near
J4-1 and 2 (display board) and J39-1 and 2
(control board) is normal.
Communication
failure upon
startup
Failure of control board,
display board, EEV control
board, CP control board and
10DI, or control voltage failure
Check the control board voltage as above.
Frist, disconnect the RS485 cables of the EEV
control board, CP control board and 10DI, check
if there is any communication failure.
If there is no communication failure, test the EEV
control board, CP control board and 10DI with
loads.
If yes, disconnect all the cables of the control
board and then apply load for test.
Power supply
failure (over
voltage and
under voltage)
Power supply board fault,
menu setting error, and poor
connection of cables
Check the input voltage of J01 of power supply
board and compare the voltage to the system
status-analog value-ABC 3-phase voltage.
Adjust the alarm menu –alarm setting –alarm
setting value - over voltage and under voltage
range
Upon startup,
the fan does not
run, fan failure
Failure of motor, power
module and control board,
poor connections of main
circuit or control circuit
Check the input voltage of the fan (DC 48V) or
check the output voltage of the power module
(DC 48V).
Check the output voltage of the J15-1 and 2 of
the control board (DC 0~10V) and check the fan
control input voltage (DC 0~10V)
Cooling signal is
available, but
the compressor
does not start
up
Compressor contactor does
not close: Failure of control
board and contactor, or poor
connection of control circuit
Check the 220VAC control voltage between A1
and A2 of the contactor, and check if the J18-3
of the control board outputs 220V.
If the 220VAC voltage is available, check if the
contactor fails.
Compressor contactor closes:
Failure of contactor and
compressor, and CP control
board
Check if the contactor output voltage is normal
Check if CP control board is normal
Check the windings of the compressor
Heating signal is
available, but
the Electric
Heating contactor does not
close: Failure of control board
and contactor, or poor
Check the 220VAC control voltage between A1
and A2 of the contactor, and check if the J18-1
and 4 of the control board outputs 220V.