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10. Troubleshooting
10.1 Troubleshooting: inverter
Code
Type
Low
E-04
voltage
High
E-05
voltage
Over
E-10
curent
Dry run-
E-11
ning
Frequent
E-20
start/stop
Abnormal
High
E-30
tempera-
ture
Pressure
E-40
sensor
fault
Tempera-
E-45
ture sensor
fault
Communi-
E-49
cation
error
Abnormal
E-60
High pres-
sure
Anti-
freeze
E-64
(freezing
protection)
24
Detecting
Delay time for
delay
re-run
time
10 s after normal
4 ms
voltage return
10 s after normal
4 ms
voltage return
3 s
10 min
60 s
30 s
10 s after normal
-
temperature
return
10 s after normal
4 ms
temperature
return
10 s after normal
4 ms
condition return
10 s after normal
4 ms
condition return
1 s
10 s
10 s after normal
4 ms
pressure return
10 s after normal
4 ms
temperature
return
Error description
Inverter safety error. If low
voltage occurs in the DC link
(or AC power), the inverter
cannot control the power
source and overcurrent can
flow
Safety error. Inverter error if
high voltage occurs in the DC
link
Error for protecting inverter
and preventing fire from over-
current. Inverter error if impel-
ler bounds, overloads, etc.
Pump protection error. Inverter
error if dry running occurs
Pump protection error. Inverter
error in case of frequent start/
stop due to leakage and lack
of water
Pump protection error. The
pump stops if the water tem-
perature in the pump exceeds
a certain level
Error during automatic mode
only. An error occurs if there is
no signal or abnormal pressure
occurs
Inverter error if there is no
signal or abnormal pressure
occurs
Inverter error if there is a
communication fault (bet-
ween control board and power
board)
Pump and pipe protection
error. Inverter error if dischar-
ge pressure is higher than a
certain pressure level
Operating the pump to pre-
vent the water from freezing
and the pump from bursting if
the water temperature in the
pump is lower than a certain
temperature level
Troubleshooting
Automatically restarts when
regular (normal) voltage is
supplied
Check input voltage and inver-
ter
Automatically restarts when
regular (normal) voltage is
supplied
Check input voltage and inver-
ter
Check motor rotation direction
Check debris of pump and pipe
Check input power
Check inverter
Check sensor
Check water level of vessel
tank
Check installation condition
Check inverter
Check leakage on pipe (remove
the air)
Reset start/stop pressure
Check inverter
Check motor rotation direction
Check debris of pump and pipe
Check input power
Check inverter
Change pressure sensor
connection
Check pressure sensor connec-
tion
Change temperature sensor
connection
Check temperature sensor
connection
Check inverter
Check pressure sensor
Check pipe sensor
Install warm jacket on the pipe
WILO SE 11/2016
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