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EN / AC Power Analyser / February 2011
TROUBLE SHOOTING
9 TROUBLE SHOOTING
Please contact your local Mastervolt Service Centre if you cannot correct a problem with the aid of the malfunction
table below. See www.Mastervolt.com for an extended list of Mastervolt Service Centres.
Failure Possible cause What to do
No display function. Display must be powered by MasterBus.
Only with AC available, the AC Power
Analyser powers.
Make sure the balance between
consuming devices and powering devices
is OK.
No communication. The
MasterBus LED does not
illuminate.
Error in the wiring. Check the MasterBus cables.
No terminating device placed at the ends
of the network.
Check if two terminating devices have
been installed (See section 4.3).

network.
Ring networks are not allowed. Check the
network connections (Section 4.3).
T-connections in the MasterBus network. Make sure that no T-connections have
been made in the network.
The wrong language is
displayed.
Wrong setting of the language at the AC
Power Analyser.
Adjust the language setting. See chapter

Wrong setting of the language at
displaying device.
Every connected device has its own
language setting. See user’s manuals.
AC Grid fail LED
illuminates, MasterBus
alarm.
Over voltage, over current,
or high frequency appears.
AC voltage (current, frequency) is too high. Check AC voltage (current, frequency) in
MasterBus monitoring
High Voltage (Frequency) alarm setting is
too low.

Nominal voltage has not been set
correctly.
If desirable, ask the installer to change the
nominal voltage setting.
AC Grid fail LED
illuminates, MasterBus
alarm. Under voltage, low
frequency appears.
AC voltage (frequency) is too low. Check AC voltage (current, frequency) in
MasterBus monitoring
Low voltage (frequency) alarm setting is
too high

Nominal voltage has not been set
correctly.
If desirable, ask the installer to change the
nominal voltage setting.
17


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