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Classification
No.
E004
E005
System errors
E006
E007
E010
Pump errors
E020
E021
Motor errors
E023
E025
E026
68
Faults, causes and remedies
Fault
Cause
Undervoltage
Mains over-
loaded
Overvoltage
Mains voltage
too high
2-phase oper-
Missing phase
ation
Warning! Gen-
The flow is
erator opera-
driving the
pump impeller;
tion (flow in
flow direction)
electrical cur-
rent is being
fed back to the
mains
Blocking
Shaft is mech-
anically
blocked
Excess temper-
Motor over-
ature in wind-
loaded
ing
Motor ventila-
tion restricted
Water temper-
ature too high
Motor overload Duty point
outside duty
chart
Deposits in the
pump
Short circuit/
Motor or elec-
earth leakage
tronic module
defective
Faulty contact
Electronic
module has no
contact to mo-
tor
Winding inter-
Motor faulty
rupted
WSK or PTC in-
Motor faulty
terrupted
Remedy
Error type
Check elec-
C
trical installa-
tion
Check elec-
C
trical installa-
tion
Check elec-
C
trical installa-
tion
Check the set-
F
ting; check
system for
proper opera-
tion Caution!
Prolonged op-
eration can
cause damage
to the elec-
tronic module
If the blocking
A
has not been
remedied after
10 seconds,
the pump
switches off.
Check shaft for
ease of move-
ment, contact
customer ser-
vice
Allow motor to
B
cool off, check
settings,
check/correct
duty point
Provide unob-
structed air ac-
cess
Lower water
temperature
Check/correct
B
duty point
Contact cus-
tomer service
Contact cus-
A
tomer service
Contact cus-
A
tomer service
Contact cus-
tomer service
Contact cus-
B
tomer service
A
A
A
F
A
A
A
A
A
A
WILO SE 2020-10
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