Delta PPM R4E, Installation Manual

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87
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 AC Adapter come
off the power outlet or 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 68).
“Battery Communication
Fail” appears in Error
Events Log. It means there is no
communication between
inverter and battery.
Please check communication status between
inverter and battery
If there is no communication, check if communication
wiring is reversed or unusual.
If the issue cannot be cleared, please contact with
local representative.
“Battery Under Voltage”
appears in Error Events
Log.
Since reversed wiring may
cause battery voltage lower
Please check if wiring to the battery is reversed.
If the issue cannot be cleared, please contact with
local representative.
Connect the AC Adapter properly to the power outlet
and 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.
AC Adapter is hot How hot is it getting?
Heating does occur under normal circumstances while
the system is in use.
If the AC Adapter is so hot that you cannot touch it by
hand, pull it off the power outlet and consult your retailer.
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.
7.2.Troubleshooting
When Something Seems Wrong (Troubleshooting)