Wilo Control MR-Lift - Page 12

12
English
Overcurrent • Signal of
failure
• The pump
is stopped
• State of
failure saved
The value of
“Maximum
current”
has been
exceededfor
a long time
and resulted
in turning
the pump
off.
After the
cause is
removed,
press the
“OK” key.
The pump
is ready to
work again.
No load • Signal of
failure
• The pump
is stopped
• State of
failure saved
Pump dis-
connected.
After the
cause is
removed,
press the
“OK” key.
The pump
is ready to
work again.
Dry run • A message
displayed
• The pump
works
Pump cur-
rent is lower
than the
value set for
“Minimum
current”. It
means that
the pump
is working
with no
liquid or that
the delivery
pipeline is
clogged.
Check the
value of the
“Minimum
current” set-
ting. Check
the level in
the tank.
Check if
the delivery
pipeline is
clogged.
Dry run • Signal of
failure
• The pump
is stopped
• State fail-
ure saved
Pump’s
work-time
in the last
dry duty
cycle, at too
low current
exceeded
value set for
the “Dry run
time” and
the pump
has been
turned off.
After the
cause is
removed,
press the
“OK” key.
The pump
is ready to
work again.
No liquid • Signal of
failure
• The pump
is stopped
Dryrunoat
switch is
open.
Check the
liquid level
in the tank.
Check the
oatswitch-
es.
After the
cause is
removed
the pump
is ready to
work again.
Thermal
fault 1
• Signal of
failure
• The pump
is stopped
• After the
fault is
removed
the state
of failure is
deleted au-
tomatically
Acceptable
temperature
for the pump
has been
exceeded
–contacts
of thermal
protection
connected
to terminals
20, 21 are
open.
Find and
remove the
cause.
If no thermal
protection is
connected
to terminals
20, 21, from
the menu
switch off
“Therm.
protect1”.
NOTE!
After the
pump is
cooled
down, the
fault is au-
tomatically
reset and
the pump
is ready to
work again.
Thermal
fault 2
• Signal of
failure
• The pump
is stopped
• State fail-
ure saved
Acceptable
temperature
for the pump
has been
exceeded
–contacts
of thermal
protection
connected
to terminals
21, 22 are
open.
After the
cause is
removed and
the pump
is cooled
down, press
the “OK”
key. The
pump is
ready to
work again.
Low voltage
L1
• Signal of
failure
• The pump
is stopped
Voltage in
phase L1
falls below
190V.
After the
cause is
gone, the
pump is
ready to
work.
Low voltage
L2
• Signal of
failure
• The pump
is stopped
Voltage in
phase L2
falls below
190V.
After the
cause is
gone, the
pump is
ready to
work.
Low voltage
L3
• Signal of
failure
• The pump
is stopped
Voltage in
phase L3
falls below
190V.
After the
cause is
gone, the
pump is
ready to
work.
Low voltage
L1, L2
• Signal of
failure
• The pump
is stopped
Voltage in
phases L1
and L2 falls
below 190V.
After the
cause is
gone, the
pump is
ready to
work.