Troubleshooting - Wilo Control MR-Lift Installation And Operating Instructions Manual

ware, a gate and MR-Lift devices. The controlling
software can be operated from any computer
connected to the Internet.
If there is no signal between MR-Lft and the
central unit, MR-Lift enters automatic operation
mode independent from the wireless system and
the following recurring message appears on the
display: "No radio communication". The time du-
ration after which the device enters the automat-
ic operation mode can be set in the menu.
If the MR-Lift device is locked by the system
administrator, the message "Blocked by
administrator" flashes on the display. Unlocking
can only be done by radio. During the lock, the
pump can not be started from the panel.
NOTE!
The sim card used in the gateway must be
configured in such a way that no PIN code is
required. In order to configure the sim card cor-
rectly, please insert it into a mobile phone, go
to security settings in the mobile phone menu
and disable prompting for PIN code. The card is
now ready to be inserted into the gateway.

3. Troubleshooting

Displayed Additional
message information
High level • Signal of
failure
• High level
relay turned
on
• Automatic
deletion of
the state of
failure after
the liquid
level falls
Cause Solution
Level of Check if the
liquid in device works
the tank in automatic
exceeded mode or if
value set in the pump is
menu. not turned
off as a
result of over
temperature,
overcurrent
or a dry
run. After
all, check if
the delivery
pipeline is
clogged.
Float switch • Signal of
High level failure
• High level
relay turned
on
• Automatic
deletion of
the state of
failure after
the liquid
level falls
Float • Signal of
switches failure
Wrong se- • State of
quence failure saved
Sensor • Signal of
4-20mA failure
disconnect- • Automatic
ed deletion of
the state of
failure after
the sensor is
connected
Overcurrent • A message
displayed
• The pump
works
English
Level of If the float
liquid in the switch
tank caused has been
switching connected
on the high as additional
level float. protection to
the standard
control sys-
tem, check if
the message
"High level"
is displayed
at the same
time. If
not, check
how high
the float
is hung in
the tank. In
other cases
proceed as in
the case of
"High level"
status.
Float Check float
switches connection,
work in then check
the wrong how high
sequence. they are
hung in the
tank and if
they are tan-
gled. Check
if they are
not dam-
aged and if
they switch
on correctly.
Delete fail-
ure with the
"OK" key.
External Check ex-
sensor cur- ternal sensor
rent is lower and its
than 3mA. connecting
wire.
Pump cur- Turn off the
rent is higher pump, check
than the the value of
value set for "Maximum
"Maximum current" and
current". look for the
cause of the
overcurrent.
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