en Faults, causes and remedies
22 WILO SE 2021-12
Press (2seconds):
the display shows the status of the warning message.
ƒ The display shows the code, the description of the warn-
ing message and how long the fault has existed for.
ƒ The pump may continue to run with limited output.
ƒ The indicated faulty operating status must not occur for a
prolonged period.
ƒ Remove cause of fault.
LED Faults Causes Remedies
E007 Generator opera-
tion
Water is flowing through
the pump hydraulics but
there is no mains voltage to
the pump
Check mains voltage
E011 Pump running dry Air in the pump Check volume flow/water
pressure
E021 Overload Sluggish motor, pump is
operated outside of its spe-
cifications (e.g. high module
temperature). The speed is
lower than during normal
operation.
Check the ambient condi-
tions
E038 Pump running in
emergency opera-
tion
Temperature sensor for
fluid temperature is defect-
ive
Request customer service
11.2 Error messages
An error message is shown directly in red on the display and indicates the status of the error message.
ƒ The display shows the code, the description of the error
message and how long the fault has existed for.
ƒ The pump switches off and persistently checks whether
the fault is still present.
ƒ Remove cause of fault.
LED Faults Causes Remedies
E004 Undervoltage Power supply too low on
mains side
Check mains voltage
E005 Overvoltage Power supply too high on
mains side
Check mains voltage
E009 Turbine operation The flow through the pump
is against the flow direction
Check the flow rate, install
non-return valves if neces-
sary.
E010 Blocking Rotor blocked Activate manual restart or
contact customer service
E020 Excessive winding
temperature
Motor overloaded Allow motor to cool down
E020 Excessive winding
temperature
Fluid/ambient temperature
too high
Check setting and duty
point
E021 Motor overload Deposits in the pump Request customer service
E021 Motor overload Fluid viscosity is too high
(e.g. too much glycol)
Check conditions of use
To Next Page
Loading...
Need help?
General
