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SEARCHING FOR FAILURES
• Verify that the inverter has been correctly attached to the electric cable
• Verify that the pump has been correctly attached to the inverter
• Verify that all the cables and connections are working.
PROBLEM
The pump does not switch on
Message
Cause
None
Interruption of the electricity supply
None
Blown fuses
None
Intervention of line protections
INPUT ERROR
(only models 1/1) – The connections
LINE and MOTOR have been inverted
PROBLEM
Intervention of the differential switch to protect the power line of the inverter
Message
Cause
None
The differential switch is inadequate to
supply the the inverter
PROBLEM
The pump does not switch on
Message
Cause
OFF
The pump is out of service (switched off
manually)
PROBLEM
The pump has stopped and does not restart
Message
Cause
OVER CURRENT
Excess absorption of current compared
to the set value (parameter A in BASIC
PARAMETERS)
CURRENT LIMIT
Serious excess of absorption of current
that exceeds the capacity of the
inverter module
DRY RUNNING
- No intake water
(DRY RUNNING PF)
- Pump not primed
- Aspiration obstructed
- Reversed rotation of the motor
LOW PRESS
The system does not reach the
minimum pressure
LOW VOLTAGE
Change in the voltage greater than
-15% of the voltage on the plate
HIGH VOLTAGE
Change in the voltage greater than
+15% of the voltage on the plate
OVER TEMP MODULE Increase in temperature not tolerated
by the inverter module due to overload
or excessive ambient temperature
Intervention
Restore the electricity supply
Replace the fuses
Verify the correct calibration of the protection
Verify the LINE and MOTOR connections and reconnect
correctly
Intervention
Substitute the differential switch with a suitable direct
current type for the components of the switches (Class A)
Intervention
Put the pump back in service pressing the ON/OFF switch
Intervention
- Check the correct setting of the current
- Check that the voltage under load is never too low
(min – 15%)
- That the pump turns freely
- That the rotation is in the right direction
- That the cables are of the right size
- Check that the pump is not blocked
- Reduce the acceleration of the motor (factory
parameter)
- Verify the presence of intake water
- Switch on the pump
- Check the aspiration
- Invert the sense of rotation of the pump motor
Check there are no breakages in the tubes.
Stabilise the current to keep it in the ± 15% tolerance
Stabilise the current to keep it in the ± 15% tolerance
- Verify that there are no accidental overloads
- Improve the cooling of the surroundings
Follows
ENGLISH |
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