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en - Original instructions
12 Troubleshooting
Introduction
In addition to the alarm troubleshooting guide in the
List of alarms (sections
guide for troubleshooting other possible problems.
12.1 Faults, causes, and remedies
The pump does not run, the main switch is on.
Cause
Solution
No
power
Restore the power supply and
supply
check that the mains connec-
tion is intact.
Triggered
Reset
overload
breaker.
Circuit breaker
Triggered
Reset the differential protec-
ground
fault
tion.
protective
device.
Fuse F1 or F2
Replace the fuse.
is faulty.
The
motor
Replace the capacitor if it is an
capacitor
is
external one. Contact the local
faulty.
sales and service representa-
tive if it is an internal capaci-
tor.
The pump starts up but blows the converter fuse
Cause
Damaged
power
cable,
short
cir-
cuited
motor,
or
the thermal protec-
tor or fuses are not
suited to the motor
current.
Triggered thermal
overload switches
on
single-phase
motors due to ex-
cessive
current
input.
The utilities are closed and the electric pump
runs at intermittent speeds
Cause
Water leaking out
of the non-return
valve or out of the
system.
Diaphragm
tank
with broken dia-
phragm,
when
applicable.
Operating point is
not calibrated cor-
rectly in relation to
the
system.
For
example, the value
58
7
and 9), we also provide a
the
overload
circuit
Solution
Check and replace the
components
as
neces-
sary.
Check the operating con-
ditions of the pump.
Solution
Check the system to lo-
cate the leaks.
Repair or replace the
components.
Replace the diaphragm.
Recalibrate the threshold
and timing.
is higher than the
pressure supplied
by the pump.
There could be a
problem with the
level float in the
intake tank.
There could be a
problem with the
level float in the
intake tank.
The pump runs and there are vibrations in or
near the pump.
Cause
The
operating
point is not cali-
brated correctly in
relation to the sys-
tem.
The value is below
the minimum pres-
sure that is sup-
plied by the pump.
The pump always runs at maximum speed.
Cause
There could be a
problem with the
Sensor.
Threshold too high
and
the
pump
does not reach the
required value.
The pump is not
primed.
The main protective device of the system is trig-
gered.
Cause
Short circuit
In the case of a
single-phase
pump, the motor
capacitor is faulty.
Check the float and the
tank.
Check
the
pressure
switch and the intake
conditions (pressure).
Solution
Recalibrate the threshold
and timing.
Solution
Check the hydraulic con-
nection between the sen-
sor and the system.
Check the working order
of the sensor.
There is air in the sensor
or the hydraulic circuit
concerned.
Change the threshold.
Check the suction line and
priming of the pump.
Solution
Check
the
connecting
cables.
Replace the capacitor if it
is an external one. Con-
tact the local sales and
service representative if it
is an internal capacitor.
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