Check the following points to ensure proper operation of whole
solar system at regular intervals.
Ensure all connectors of this inverter are cleaned all the time.
Before cleaning this inverter, be sure to turn off all the
breakers (AC breaker, battery breaker and PV DC breaker).
Clean this inverter, during the cool time of the day, whenever
it is visibly dirty.
Periodically inspect the system to make sure that all wires
and supports are securely fastened in place.
Battery maintenance
Servicing of batteries should be performed or supervised by
personnel knowledgeable about batteries and the required
precautions.
When replacing batteries, replace with the same type and
number of batteries or battery packs.
The following precautions should be observed when working
on batteries:
a) Remove watches, rings, or other metal objects.
b) Use tools with insulated handles.
c) Wear rubber gloves and boots.
d) Do not lay tools or metal parts on top of batteries.
e) Disconnect charging source prior to connecting or
disconnecting battery terminals.
f) Determine if battery is inadvertently grounded. If
inadvertently grounded, remove source from ground.
Contact with any part of a grounded battery can result in
electrical shock. The likelihood of such shock can be
reduced if such grounds are removed during installation
and maintenance (applicable to equipment and remote
battery supplies not having a grounded supply circuit).
WARNING:
There are no user-replaceable parts inside of the
inverter. Do not attempt to service the unit yourself.
Maintenance & Cleaning
15
When a warning situation occurs, icon will flash and the
fault code area will display “WR” wordings. You may check
software for the detailed warning situations. Please contact your
installer when below warning situations occur.
16.1 Warning List
CAUTION: A battery can present a risk of electrical shock
and high short-circuit current.
CAUTION: Do not dispose of batteries in a fire. The batteries
may explode.
CAUTION: Do not open or mutilate batteries. Released
electrolyte is harmful to the skin and eyes. It may
be toxic.
When there is no information displayed in the LCD, please check
if PV module connection is correctly connected.
NOTE: The warning and fault information can be recorded by
remote monitoring software.
Trouble Shooting
16
Warning
Description
Icon
(flashing)
CPU is performing the
auto-correction of AD
signals.
Data saving failure.
Sampling adjustment is in process
in DSP.
Flash memory fails.
Input PV is found lost.
PV input voltage reads
low.
An Error occurred in
the CPU initialization
Power grid voltage
exceeds the upper
threshold
The PV input voltage is out of
range.
The input PV voltage is too low to
initiate the inverter.
Initialization failed in CPU when
the inverter is turned on.
Emergent grid
disconnection
The utility is abnormal.
Battery voltage is too
low.
The battery voltage is less than
42V.
Low battery
Battery voltage is less than 25% of
battery capacity or the battery
voltage less than 44V.
The grid voltage has exceeded the
highest limit.
Power grid voltage
falls below the lower
threshold
The grid voltage is beyond the
lowest limit.
Power grid frequency
exceeds the upper
threshold
The grid frequency has exceeded
the highest limit
Power grid frequency
falls below the lower
threshold
The grid frequency is beyond the
lowest limit.
Power grid-connected
average voltage
exceeds the maximum
threshold
Average feeding voltage has
exceed the upper limit
Power island
Islanding condition is detected.
Battery is
disconnected.
Battery is not detected.
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