23
Problem
Possible Cause
Solution
Leakage
current
detection
circuit
failure
1
The CT terminal has bad
connection or the CT is
malfunctioning.
2
The
RCD
circuit
is
abnormal.
Relay
overtem-
perature
The temperature of the main
relay is too high. It might be a
hardware problem.
CP
failure
Abnormal CP loop circuit on
the main board
Wiring
Input ter-
minal
overtem-
perature
1
The
input
terminal
is
loosely connected which
causes bad connection.
2
The cable’s current-carry-
ing capacity does not meet
the requirements.
1
Ensure that the AC cable is
tightly connected, that the ca-
ble used meets requirements,
and L and N wires are cor-
rectly connected.
2
Contact Sungrow Customer
Service
if
the
problem
persists.
Reverse
polarity
L and N wires are connected
reversely.
table 4-2 LED Signals that indicates abnormal conditions
Charger Status
LED Signals
Reverse polarity
The red LED is glowing
Leakage current
The red LED blinks for 4 times (on for 0.5 s, off for 0.5 s)
CP failure
The red LED blinks for 5 times (on for 0.5 s, off for 0.5 s) and then
off for 3 s
Overcurrent
The red LED blinks for 6 times (on for 0.5 s, off for 0.5 s) and then
off for 3 s
Stuck replay
The red LED blinks for 7 times (on for 0.5 s, off for 0.5 s) and then
off for 3 s
Abnormal leakage
current loop
The red LED blinks for 8 times (on for 0.5 s, off for 0.5 s) and then
off for 3 s
Input terminal
overtemperature
The red LED blinks for 9 times (on for 0.5 s, off for 0.5 s) and then
off for 3 s
Relay
overtemperature
The red LED blinks for 10 times (on for 0.5 s, off for 0.5 s) and
then off for 3 s
User Manual
Summary of Contents for AC011E-01
Page 2: ......
Page 6: ......
Page 27: ...19 End figure 2 5 Pole mounted charger User Manual 2 Installation...