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Maintenance
EN
Troubleshooting
Problem
Cause
The pump does
Electric power sup-
not switch on
ply cut-off
Fuses burned
Intervention of the
line protections
Intervention of
The differential
the differential
switch is inadequate
switch to protect
for inverter power
the inverter power
supply
supply line
The pump does
The pump is out of
not start
service (put out of
service manually).
The pump is out of
service due to dry
running anomaly.
Motor breakdown
The pump is blo-
cked
Level signal not pre-
sent with active level
input signal active.
Out of Service using
external signal.
Pump always
Leaks in the plant
functions, even
without request
Flow rate sensor
broken or obstructe
Pressure sensor
broken
Pump performan-
Presence of air in
ces lower that
the intake manifold
those on the plate
Pump blocked or
damaged
Large pressure drop
downstream from
the unit
34
Light off
Light on
Light flashing
Intervention
Restore the electric power
supply
Replace the fuses
Check the correct cali-
bration of the protections,
identifying and removing
the cause
Replace the differential
switch with a model suita-
ble for the buttons and in
direct current (class A)
Push ON + ENTER to
put the pump back into
service
Identify and remove the
cause of the alarm
Remove the pump and
replace the motor
Remove the pump, identify
and eliminate the block
Check for water at the
suction or the level signal
function.
Check the external signal.
Identify the leaks and
block them
Check that the valve
moves freely
Inspect and check the
pressure sensor
Bleed the intake
Inspect the pump and
eliminate the problem
Identify and eliminate the
large pressure drop.
POWER
STATUS
POWER
STATUS
POWER
OFF
STATUS
POWER
DRY RUNNING
STATUS
POWER
OVER CURRENT
STATUS
POWER
LOW LEVEL
STATUS
POWER
EXT OFF
STATUS
POWER
P _ X . X
STATUS
POWER
P X . X
STATUS
POWER
P _ X . X
STATUS
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