Xylem hydrovar, Installation, Operation And Maintenance Manual

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Error Cause Check the following:
OVERLOAD
ERROR 12
Power limit exceeded - motor
current too high (slow rise
detected).
• Is the parameter P215/P220 RAMP 1/RAMP 2
too short and P265 BOOST too low?
• Do the cables and connection work?
• Is the pump is blocked?
• Does the motor rotate in the wrong direction
before running (non-return valve defect)? Not
allowed operation point or P245 MAX.FREQ. is
too high, also check the P265 BOOST value.
OVERVOLTAGE
ERROR 13
The voltage is too high. • Is the parameter P220 RAMP 2 too fast?
• Is the power supply too high?
• Are the voltage peaks too high?
If the error is power or voltage-related, line filters,
line inductors, or RC-elements can be installed to
resolve the issue.
INVERT. OVERHEAT
ERROR 14
The temperature inside the
unit is too high.
• Is the unit properly cooled?
• Are the units motor vents contaminated?
• Is the ambient temperature too high?
THERMO MOT/EXT
ERROR 15
The PTC sensor has reached its
release temperature.
• Close X1/PTC if there is no external protective
device connected..
• Refer to Motor sensor connection (page
35) for detailed information..
PHASELOSS
ERROR 16
One phase of the power
supply does not work.
• The power supply under full load
• If phase failure occurs at the input.
• The circuit breakers
• And visually inspect the points at the input
terminals.
UNDERVOLTAGE
The voltage is too low. • Is the supply voltage too low?
• Is there phase failure at the input?
• Is there asymmetry between the phases?
COMM LOST
The communication between
the power unit and the control
board does not work correctly.
Is the connection between the control board and the
power unit correct?
LACK OF WATER
ERROR 21
The low water sensor
connection, terminals
X3/11-12, is opened. The
sensor is only active when the
pump runs.
• The incoming pressure or minimum water level
values are set too low, then change the settings.
• The error only happens for a short time, then
adjust parameter P610 DELAY TIME.
If a sensor is not used, then the terminals X3/11-12
must be bridged.
1
MIN. THRESHOLD
ERROR 22
The defined value of
parameter P605 MIN.THRESH.
was not reached during the
preselected P610 DELAY TIME.
• The booster unit and adjust the parameter P610
DELAY TIME.
• Set the parameter P615 ERROR RESET set to ON,
to enable five restarts in the empty system.
FAILURE SENSOR 1
,
ACT. VAL. SENSOR 1
ERROR 23
Sensor signal on terminals
X3/2 is less than 4 mA which
an active sensor must deliver.
• The Actual value signal from the pressure
transducer is faulty.
• The connection is faulty.
• The sensor or cables are faulty.
• Check the configuration of the sensors in P400
SUBMENU SENSOR.
1
The unit is reset when the terminals X3/11-12 are closed.
10 Troubleshooting
100 HVL 2.015-4.220 Installation, Operation, and Maintenance Manual