Xylem hydrovar, Installation, Operation And Maintenance Manual

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10 Troubleshooting
Precaution
NOTICE:
• Always disconnect the unit from the power supply before you perform any installation
and maintenance tasks.
Warnings and errors
• Warnings and errors are shown on the display and/or by the red LED.
• When a warning is active and the cause is not remedied within 20 seconds, then an
error is shown and the unit stops. For some warnings, the unit keeps running
depending on the type of error.
• When an error is active, the connected motor is stopped immediately. All errors are
shown in plain text and saved in the error memory including date and time when the
error appeared.
• An automatic error-reset can be activated in P600 SUBMENU ERRORS to reset an
occurred error automatically five times. For more information about this function, see
P615 ERROR RESET.
• All error signals and warnings can be indicated via the two status-relays on terminals
X2/1-3 or X2/4-6 depending on the configuration. For more information, see P715
CONF REL 1 and P720 CONF REL 2.
The errors can be reset automatically (depending on the setting in parameter P615
ERROR RESET) or manually in the following ways:
• Disable the power supply for more than 60 seconds.
• Press
◄
and
►
simultaneously for 5 seconds.
• Open and close the external ON/OFF (X1/18-19).
10.1 No error message on the display
Error Cause Remedy
No AUTO-START after the
power failure.
Parameter P08 AUTO-START is set to OFF. Check parameter P08 AUTO-START.
The system pressure is not
steady.
Pressure higher than the START VALUE or REG.
MODE has been changed to Inverse.
Check parameter P04 START VALUE
and/or P320 REG. MODE.
10.2 Error message on the display
Error Cause Remedy
OVERCURRENT
ERROR 11
Power limit exceeded -
too high motor current
(fast rise detected).
Check the following:
• The connection terminals of the unit
• The connection terminals of the motor and the motor cable
• The winding of the motor
Make sure all the connections, cables, and windings are OK and
reset the error by disabling the power for more than 60 seconds.
The automatic error-reset is not available for this failure so the power supply has to be cut
for more than 60 seconds to reset the error.
10 Troubleshooting
HVL 2.015-4.220 Installation, Operation, and Maintenance Manual 99