Installation and operating instructions Wilo-Yonos ECO BMS
37
English
Table 10: Faults on the pump
If the operating fault cannot be remedied, please consult a specialist technician or the
nearest Wilocustomer service point or representative.
Short-circuit
Motor/module
defective
The motor stops
from a short circuit
and restarts after a
delay. After 25
unsuccessful starts
the motor is
switched off perma-
nently.
After a short circuit the motor is
shut off. It is reactivated after
1 seconds. After 25 short circuits
it is shut off permanently. This
can only be reset if the power is
disconnected for >30 seconds.
The SSM relay is active as long as
the internal error counter is not
ZERO.
Contact/
winding error
Contact problems
with the motor.
Motor winding
motor or plug is
damaged.
Motor restarts after
a delay. After 5
unsuccessful starts
the motor is
switched off perma-
nently.
If contact between the motor and
module fails, the motor is shut off.
A restart is initiated after 30 sec-
onds. After it has been switched
off five times the motor is shut off
permanently. This can only be
reset if the power is disconnected
for >30 seconds. The SSM relay is
active as long as the internal error
counter is not ZERO.
Dry run
Venting faulty
Motor restarts after
a delay.
After being exposed to dry-run-
ning conditions for a certain time
frame the motor is shut off.
It restarts after a delay of
30 seconds. The pump runs auto-
matically under normal conditions
when dry running is longer
present.
Excess module
temperature
Limited air supply to
the heat sink of the
module
Operation of the
pump outside the
permissible temper-
ature limits.
If the interior temperature of the
module increases excessively, the
pump switches off and reports
a fault. A restart is initiated after
30 seconds. After it has been
switched off five times the motor
is shut off permanently. This can
only be reset if the power is dis-
connected for >30 seconds.
The SSM relay is active as long as
the internal error counter is not
ZERO.
Faults
Causes
Performance of the
pump/remedy
Description
