54
EN
4.2
PARA ST 15/7 iPWM pump of the solar unit
LED colour
Anomaly
Cause
Possible solution
Red/Green
flashing
Turbine operation
The hydraulic system in the pump is
powered but the pump is not receiving
any mains voltage
Check the network voltage
Dry operation
Air in the pump
Check for leaks in the system
Overloading
The motor struggles to turn. The number
of revolutions is lower than that during
normal operation
Check the network voltage
Check the system flow rate/pressure
Check the characteristics of the system water,
clean out any debris from the system
Flashing red
Overvoltage/undervoltage
Supply voltage too low/high
Check the network voltage
Excessive temperature
Excessive temperature inside the pump
Check the water temperature in relation to the
ambient temperature
Check the network voltage
Check the ambient operating conditions
Short circuit
Motor current too high
Check the network voltage
Steady red
“Permanent lockout”
Impeller seized
Replace the pump
Fault in the electronic board and/or the
motor
Replace the pump
LED off
Stationary
No electrical power
Check the connection to the power supply
LED faulty
Check if the pump can operate
Electronic board faulty
Replace the pump