53U
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: info@m-system.co.jp
EM-6485-B Rev.21 P. 52 / 52
ERROR MESSAGES
‘ERR’ followed by numerical figures means a system error. Each figure indicates a particular system error status if there are
more than one digit of figures.
FIG ERROR DIAGNOSTICS WHAT TO DO
1 Firmware destroyed Repair at the factory
2 Calibration data destroyed Repair at the factory
3 System parameters destroyed
System parameters stored in the device are destroyed, often due to exces-
sive noise interference.
Initialize the system parameters and set
them up again.
Go to SETTINGS ➝ MAINTE ➝ ALL
CLEAR ➝ YES
4 Energy reading data destroyed
Energy reading data stored in the device are destroyed, often due to exces-
sive noise interference.
Reset the energy readings (all energy and
time count) to zero.
Go to RESET ➝ ENERGY
5 Average (demand) data destroyed
Average (demand) data stored in the device are destroyed, often due to
excessive noise interference.
Reset the average readings to zero.
Go to RESET ➝ DEMAND
6 Statistical data destroyed
Statistical data (e.g. MAX/MIN values) stored in the device are destroyed,
often due to excessive noise interference.
Reset the statistical data to zero.
Go to RESET ➝ MAX/MIN
‘OL’ followed by a space and alphabets means an input overload error. Each alphabet indicates a particular input error if
there are more than one digit of alphabets.
CHR ERROR DIAGNOSTICS WHAT TO DO
F Either U1N or I1 (selectable) input is lost or the input line frequency is out
of measurable range (45 – 65 Hz).
Check the input signals/wiring.
I Either of the current inputs is overload (120% or more of the rating). Check the input signals.
U Either of the voltage inputs is overload (120% or more of the rating). Check the input signals.
MAINTENANCE
■ CLEANING
The front panel and control buttons should be gently wiped
with a dry cloth.
Caution: Do not use alcohol, benzine, or any other solvents.
LIGHTNING SURGE PROTECTION
M-System offers a series of lightning surge protector for
protection against induced lightning surges. Please contact
M-System to choose appropriate models.
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