Installation and operating instructions SK 601N
29
English
9 Faults, causes and remedies
For faults, causes and remedies, see also the operating instruc-
tions of the respective pumps
If the operating fault cannot be remedied, please contact
a specialist technician or the nearest Wilo Customer Service
location or representative.
Faults
Causes
Remedy
SK601N in con-
nection with the
pump
Pump is not run-
ning although the
power supply is
switched on.
Time switch is on the
“Clock” symbol and
all segments are in
the “Off” position.
Set segments to “On”
Time switch is
switched off, “0”
Set the time switch to the
“Clock” symbol or “I”
“Clock”
ƒ
Timer program is
active
“I”
ƒ
permanent operation
SK602N/
622N in connec-
tion with the
pump
Pump is not run-
ning although the
power supply is
switched on.
WSK of the pump not
connected
Connect the WSK
WSK of the pump was
tripped
After the motor cools off,
the pump starts up on its
own.
For pumps without a
WSK, contacts 15 and
10 on switchgear
SK602N or SK622N
are not bridged.
Bridge contacts 15 and 10
on switchgear SK602N or
SK622N.
Switchgear SK602N
or SK622N not
switched on
Switch on the green
pushbutton.
Time switch
stopped.
The time switch has
not has a power
supply for more than
100 hours.
Check the voltage.
Change the battery for the
battery backup.
