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8.2.Troubleshooting
Symptom
Nothing is displayed on
the screen.
Nothing is displayed even
when the screen is touched.
Total accumulated power
of Inverter and the total
accumulated amount of
power on the Power
Monitor vary.
Verification details
Is the backlight turned off?
Has the 6-pin connector
come off the
Power Monitor?
Have you replaced the
Inverter?
Responsive action
Touching the screen will trigger the display of the
screen.
The duration of time the screen remains turned on
can be changed in the Screen Setting.
⇒
“Screen Setting” (Page 32).
Connect the 6pin connector properly to the Power Monitor.
Contact your retailer if the symptom persists even
after a proper connection has been established.
It is normal in the following case:
The accumulated amount of power is accumulated
for each Inverter and Power Monitor, respectively.
Therefore, the values for the accumulated amount
of power may be different on a Inverter and those
displayed on a Power Monitor.
Has any power failure
occurred?
The Power Monitor restarts and the screen remains
turned on for the duration of the set sleep time when
the system is restored from a power failure condition
after a power failure occurs.
The screen is turned on
when not in operation.
Is any error icon being
displayed?
The screen is turned on and the error message is
displayed automatically when a malfunction occurs.
Verify the displayed error message.
⇒
Refer to the Installation and Maintenance Manual
of the Inverter.
■ Responsive actions that should be taken in cases where the following symptoms occur are described.
Voltage elevation
suppression and
temperature elevation
suppression are displayed.
Verify the frequency and
duration of occurrence.
The Voltage Elevation Suppression function and the
Temperature Elevation Suppression function are
functions that are triggered to ensure safe operation
of the system.
There is no malfunction with the system if the frequency
is low or when they occur for brief intervals.
Consult your retailer if the frequency is high or when
the system is not restored for a long period of time.
Performance data is lost.
Alternatively, the content
of the performance data
has changed.
Has the time been advanced
or reverted by 15 minutes
or more?
Has there been any power
failure?
The past performance data may be affected in
instances where date/time settings are performed
or when a power failure occurs.
The amounts of energy
generation differ from
those described in the
statement of the power
company.
Verify the amount of power
being displayed.
There may be discrepancy between the amount
described in the statement of the power company
and the amount of power displayed due to following
types of errors.
If the discrepancy is significant, consult your retailer.
(1) Error in measurement:
The error arising from the fact that the instrument
used by the power company for the purpose of
calculating the amount of energy generation is not a
specified measuring instrument but instead it is
another equipment.
(2) Errors in calculation:
The error arising from rounding up or rounding off of
figures in the calculation and display process of the
Power Monitor.
When Something Seems Wrong (Troubleshooting)
