Wilo Stratos GIGA Série Notice De Montage Et De Mise En Service page 124

English
Classification No.
E121 Motor PTC short-
E122 Interruption to NTC
E124 Interruption to NTC
Impermissi- E099 Pump type
ble combina-
torics
System E119 Turbine operation
errors
Tab. 11: Error table
Additional explanations of error
codes
124
Fault Cause
Internal electronics error
circuit
Internal electronics error
power element
Internal electronics error
electronic module
Different pump types
have been
interconnected
The flow is driving the
error (flow against pump impeller; electrical
flow direction; pump current is being fed back
cannot start) to the mains.
*Error E006:
The inverters 11 – 22 kW do not check the connected power supply,
but instead the voltage drop in the intermediate circuit. Without load,
two connected phases are sufficient to charge the intermediate cir-
cuit. The error detection does not respond. It will only respond when
the pump is under load.
*Error E021:
Error "E021" indicates that the pump requires more power than is
permitted. To ensure that the motor and electronic module do not
suffer irreparable damage, the drive protects itself by switching the
pump off if an overload lasts more than 1 minute.
The most common causes of this error are a pump that is configured
too small, especially when pumping viscous fluids, or an excessive
volume flow in the system.
When this error code is displayed, there is not an error in the electronic
module.
*Error E070; possibly combined with error E073:
If additional signal lines or control cables are connected to the elec-
tronic module, the effects of EMC (immission / interference resist-
ance) may interrupt communication. This results in error code "E070"
being displayed.
You can check this by disconnecting all the communication lines
installed by the customer from the electronic module. If the fault no
longer occurs, there could be an external signal interfering on the
communication line(s) that exceeds the applicable standard values.
The pump can only return to normal operation once the source of
interference is remedied.
Remedies
Request customer service
Request customer service
Request customer service
Request customer service
Check the setting, check
system for proper operation
Caution! Prolonged operation
can cause damage to the
electronic module.
Error type
HV AC
A A
A A
A A
A A
A A
WILO SE 04/2020