Faults, Causes And Remedies - Wilo Stratos PARA Série Notice De Montage Et De Mise En Service

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• Electronic devices may be impaired functionally or damaged by the strong magnetic
field of the rotor.
• If the rotor is outside the motor, magnetic objects may be attracted very suddenly.
This can result in injury and damage to property.
In assembled condition, the rotor's magnetic field is guided in the motor's iron core. There
is therefore no harmful magnetic field outside the machine.
DANGER! Risk of fatal electrical shock!
Even without the module (without electrical connection), there may be dangerous
contact voltage at the motor contacts.
It is not permissible to dismantle the module!
• For the commissioning of the pump, see section 8.

10 Faults, causes and remedies

Faults, causes and remedies tables 10, 10.1, 10.2.
Have faults remedied by qualified personnel only! Follow the safety instructions
in chapter 9!
Faults
Mains
undervoltage
Mains overvoltage Faulty supply by the
Motor blocking
Synchronous run
defective
44
Causes
Mains overloaded
energy provider
e.g. due to deposits
High level of friction,
motor control not
okay
Behaviour of the
pump/remedy
Switch off and restart
the motor.
Switch off and restart
the motor.
Motor restarts after a
delay. After 5
unsuccessful starts the
motor is switched off
permanently.
If the motor's rotating
field is not synchro-
nised, the pump tries to
restart every 5 seconds.
Description
In the event of overvoltage or
undervoltage, the motor is
switched off (SSM relay is
active). It starts automatically
when the voltage is within the
valid range once again.
If the motor is blocked, a
maximum of 5 restarts are
initiated at 30 second
intervals. If the motor is still
blocked, it is switched off
permanently. This can only
happen if the power is
disconnected for longer than
30 seconds and then switched
on again. The unblocking
programme runs during every
start-up procedure. The SSM
relay is active as long as the
internal error counter is not
ZERO.
In the event of a defective
synchronous run the motor is
shut off. A restart is initiated
after 5 seconds. The pump
starts automatically once the
rotating field is synchronised.
WILO SE 12/2017