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4 Troubleshooting
Before returning the instrument for repair, call the service, perhaps the meter is not damaged, and
the problem has occurred for another reason.
The meter repairs should be carried out only in the outlets authorized by the manufacturer.
The following table describes the recommended procedure in certain situations that occur when
using the meter.
Symptom
Cause
Action
The meter does not
start after pressing
button
.
During the voltage
measurement the
following symbol is
displayed:
.
The meter turns off
during the initial test.
Discharged or
incorrectly placed
batteries/ rechargeable
batteries.
Check if the batteries are
placed correctly, replace
and/or recharge the
rechargeable batteries. If
this does not help, sent
the meter for servicing.
Measurement errors
after moving the meter
from cold environment
to warm and humid
environment.
No acclimatization.
Do not perform the
measurements until the
meter reaches the
ambient temperature
(about 30 minutes) and
dries.
Consecutive results
obtained in the same
measuring point are
significantly different
from each other.
Incorrect connections in
the tested installation.
Check the connections
and remove defects.
The network with high
noise or unstable
voltage.
Perform a larger number
of measurements,
average the results.
During contact voltage
measurement or earth
resistance, RCD is
tripped (RCD is tripped
already at 40% of I
n
set
value).
The set value of I
n
is to
high.
Set correct I
n
.
Relatively high leakage
currents in the
installation.
Reduce leakage currents.
Error in the installation.
Verify the correctness of
N and PE connections.
During the test the
switch is not tripping.
The set value of I
n
is to
low.
Set correct I
n
.
Improper current
waveform setting.
Set the proper current
waveform.
RCD damaged.
Test RCD by pressing
TEST button, or replace
RCD.
Error in the installation.
Verify the correctness of
N and PE connections.
During measurements
of RCD disconnection
current
symbol is
displayed, although the
switch was tripped.
Tripping time is longer
than the measurement
time.
RCD switch should be
considered as faulty.
Large differences
between the results of
repeated measurements
Initial magnetization of
the transformer core
inside the RCD.
It is normal for some
direct-acting RCDs; try to
perform further
