73
Failure Messages
Error Probable Cause Measure
• Check Parameter RAMP 1/2 [0215 /
0220] (too short) and BOOST [0265]
(too low)
OVERLOAD Power limit of the HYDROVAR • Check motor connection, cable and
ERROR 12 is exceeded power supply
• Pump blocked
• Motor turns in the wrong direction
• MAX. FREQUENCY [0245] too high
• Parameter RAMP 2 [0220] too fast
OVERVOLTAGE
DC voltage too high
• Power supply too high
ERROR 13 • Voltage peaks too high (Solution: Line
filters)
INVERT. OVERHEAT Excessive temperature inside
• Improper cooling
ERROR 14 the HYDROVAR
• Contamination of the motor vents
• Ambient temperature too high
An external protective device
• Close X1/PTC if there is no external
connected to terminal X1/PTC
protective device connected.
THERMO MOT/EXT
has released (e.g. PTC which is
• Close external on/off switch if
ERROR 15
connected has reached its
connected to these terminals.
release temperature).
• For detailed information, see
chapter 8.4.3.
• Check power supply under full load.
PHASELOSS One phase of the power supply
– Check if phase failure at the input.
ERROR 16 has been lost.
• Check circuit breakers
• Visual inspection of points at the
input terminals.
• Supply voltage too low
UNDERVOLTAGE DC voltage • Phase failure at the input
• Asymmetry of the phase imbalance
• Check if the addressing of Basic
Inverter [DIP SW.] has been done
The communication between
correctly.
COMM LOST
the Power Unit and the control
• Check if each unit has its own pump
card is lost.
address.
• Check if the connection from
control card to the power unit is
made properly (ribbon cable).
• Cut off power supply for > 60 seconds.
Reset:
• Manual reset by closing external ON/OFF (Terminals X3/7-8)
• Manual reset by pressing and simultaneously for about 5 seconds
• Auto-reset possible if ERROR-RESET [0615] is set to ON
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