Xylem LOWARA Q-Smart Manual De Instalación, Funcionamiento Y Mantenimiento página 57

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 triggered.
Cause
Short circuit
In the case of a
single-phase
pump, the motor
capacitor is faulty.
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.
en - Original instructions
57