Vertiv Liebert CRV Plus, Руководство пользователя

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Vertiv | Liebert CRV + | User Manual 8 7
Fault
phenomena
Possible causes Corrective actions
Heating device
does not start
up
connection of control circuit If the 220VAC voltage is available, check if the
contactor fails.
Heating contactor closes:
Failure of contactor and
Electric Heating device, or
poor connection of control
circuit
Check if the contactor input / output voltage is
normal, check if the input voltage of the Electric
Heating device is normal and if the over
temperature protection switch is opened.
Low pressure
alarm occurs
when starting
the compressor
Ball valve in the liquid pipe is
not open
Check the temperature and internal pressure of
the liquid pipe
CP drive is
under
protection when
starting the
compressor
Ball valve in the gas pipe is
not open, the circuit breaker
of the compressor is not
closed
Open the ball valve and close the circuit breaker
High pressure
alarm occurs
when starting
the compressor
Failure of outdoor fan, poor
connection of control circuit,
input voltage fault, failure of
the pressure sensor
Check the menu analog values- Comparison
between discharge pressure and gauge
pressure, check if the pressures are consistent.
Check if system menu –output voltage of the
outdoor unit and the actually measured voltage
(filter board J3-1 and 2) is consistent.
Check the outdoor unit voltage input and fan
running current.
Condenser
pump does not
drain at high
water level
Failure of pump, power
module and control circuit, or
the pump is installed too high
Check if the pump and power module are
normal (connect 220VAC to the power module
to test the pump function)
Adjust the installation locations of the pump and
pipes to ensure the pump is below the water line
Check if the water level switch (or short circuit
J21-5, 6) can make KA1 close, and check if the
pump power module has 220V voltage