User manual version V2.3
12
5.3 Common problems and solutions
phenomenon
Possible reasons
solutions
P
O
W
E
R
485/42
2
LI
N
K
S
T
A
T
U
S
on
on
on
on
Normal
connection, no
data transmission
normal
，
need no further handling
on
blink
blink
on
Normal
connection, in data
transmission
normal
，
need no further handling
off
off
off
off
No power supply
Connect the power; make sure the power is
in good connection.
on
off
X
X
Inverter in bad
connection
Check if the connecting wire is right
，
and
make sure the connecting wire is according
to T568B line sequence. Please use
professional network cable tester to test.
Make sure the stability of the RJ-45
connector.
Make sure the inverter is in normal working
status.
on
X
X
blink
GSM signal is too
weak
Change the installation place of the
equipment or the place of the antenna
，
search for a place with good signal quality
STATUS
On
GSM module is normal, signal strength is good.
blinking
GSM module is normal, signal strength is so so.
Off
GSM module is normal, signal strength is bad; or GSM
module is abnormal.
Note
：
GSM module abnormal means GSM module has
not been registered on the Internet.
