Troubleshooting - Huawei SUN2000L Series User Manual

SUN2000L-(4.125KTL, 4.95KTL)-JP
User Manual
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7.7 Troubleshooting

Table 7-11 Common faults and troubleshooting measures
Symptom
The app fails to be installed
on an Android mobile
phone.
The communication fails.
The Failed to connect to
the inverter.
Reconnecting ... message is
displayed.
Data fails to be obtained
during operations.
The SUN2000L list fails to
be obtained.
No upgrade package is
available for an upgrade.
In the WiFi area on the
home screen of the app, the
Available WiFi networks
nearby list is blank.
Issue 03 (2018-04-11)
Possible Cause
 The version of the
mobile phone operating
system is earlier than the
required version.
 Allow Installation of
apps from unknown
source is not selected.
 The original version on
the mobile phone is not
deleted.
The mobile phone or router
is more than 5 meters away
from the SUN2000L, so the
WiFi connection is
disconnected.
The mobile phone or router
is more than 5 meters away
from the SUN2000L, or the
WiFi signal is weak.
Connection to the
SUN2000L is disconnected.
An error occurs in the WiFi
connection to the app.
No upgrade package is
saved in the mobile phone.
No permission is granted
during app installation.
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7 Operations on the Local FusionHome App
Measures
 Upgrade the version of
the mobile phone
operating system.

Choose Settings >
Security and select
Allow Installation of
apps from unknown
sources.
Keep the mobile phone or
router within 5 meters of the
SUN2000L and reconnect
the WiFi connection.
Ensure that the WiFi
network is connected. Log
out of the app and then log
in again.
Reconnect to the
SUN2000L.
 If the list still cannot be
obtained after several
attempts, log out. Then
log in and try again.
 Check whether the WiFi
connection is correct.
Save the upgrade package in
the mobile phone.
Reinstall the app and grant
the app access permission.
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