92
Error Probability cause Solution
OVERLOAD
ERROR 12
Power limit of the HYDROVAR
is exceeded
• check Parameter RAMP 1/2
[0215/0220] (too short) and BOOST
[0265] (too low)
• check motor connection
(star/delta) and cable
• Pump blocked
• Motor turns in the wrong direction
before running
(Non return-valve defect)
• Not allowed operation point or
MAX. FREQUENCY [0245] too high
check also the BOOST [1015] in the
submenu TEST RUN [1000]
OVERVOLTAGE
ERROR 13
DC voltage of the HYDROVAR
too high
• Parameter RAMP 2 [0220] too fast
• Power supply too high
• Voltage peaks too high
• (Solution: Line filters, Line
inductance, RC-Element)
INVERT. OVERHEAT
ERROR 14
too high temperature inside
the HYDROVAR
• no proper cooling
• contamination of the motor vents
• ambient temperature too high
THERMO MOT/EXT
ERROR 15
An external protective device
connected to terminal X1/PTC
has released (e.g. PTC which is
connected has reached its
release temperature)
• close X1/PTC if there is no external
protective device connected (e.g.
PTC, low water switch)
• close external on/off switch if
connected to these terminals
• For detailed information how the
terminal X1/PTC could be used see
chapter 9.4.3
PHASELOSS
ERROR 16
One phases of the power
supply has been lost ->
automatic Power reduction
(just available for the units
HV4.055-4.110)
• check power supply (even under
full load) – phase failure at the
input
• check circuit breakers
circuit points at the input terminals
UNDERVOLTAGE
DC voltage of the HYDROVAR
too low
• supply voltage too low
• phase failure at the input
• asymmetry of the Phases
COMM LOST
The communication between
the Power Unit and the Control
card doesn’t work correctly
• check if the addressing [1220] has
been done correctly (retry!)
• check if each unit has allocated his
own pump address
• check if the connection from
control card to the power unit is
made properly (ribbon cable)
To Next Page
Loading...
Need help?
General
