10
SEP LEMO12SD / LEM012SS 2015
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Problem
Check
Solution
No light for the
consumption
indicator.
Is the load running?
Is the operating
power too low?
Maybe there is a
fault in the inside
circuit.
Only when load is running, this
LED will flash.
If the operating power is too low,
the spacing interval of flashing
will be prolonged so that people is
under the delusion that LED isn’t
burning.
Please connect with technical
support to replace this meter.
The register can’t
run.
Is there a power
supply inside the
meter?
Is the operating
power too low?
Maybe there is a
fault in the inside
circuit.
Check that the power supply
indicator is burning.
If the operating power is too low,
the spacing interval of running will
be prolonged so that people is
under the delusion that register
can’t run.
Contact a qualified technician.
When necessary replace the
meter
LCD backlight can’t
lit.
Is there power
supplied to the
meter?
Maybe there is a
fault in the inside
circuit.
Check that the power supply
indicator is burning.
Please connect with technical
support to replace this meter.
No pulse output.
Is DC power supply
connected to the
meter?
Is the connecting
correct?
Maybe there is a
fault in the inside
circuit.
Check the external voltage source
(Ui) is 5-27V DC.
Check correct connecting:
connect 5-27V DC to connector 20
(anode), and the signal wire (S)
to connector 21 (cathode).
Contact a qualified technician.
When necessary replace the
meter.
Pulse output rate
wrong.
Maybe there is a
fault in the inside
circuit.
Please connect with technical
support to replace this meter.