46
09 Maintenance
For Re-
view
User Manual V1.0-2023-03-20
No. Fault Cause Solutions
19 Gnd I Fail
The input insulation
resistance value to the
ground decreases when
the inverter is operating.
1. Check whether the working environment
of the inverter meets the requirements. For
example, the fault may be occurred due to
high humidity in rainy days, .
2. Make sure that the components are
properly grounded and the AC side is
properly grounded.
20 Utility Loss
1. Utility grid power
fails.
2. The AC cable is
disconnected or the
AC breake is o.
1. The alarm is automatically cleared after
thegrid power supply is restored.
2. Check whether the AC cable is connected
andthe AC breaker is on.
21 AC HCT Fail
The HCT sensor is
abnormal.
Disconnect the AC output switch and DC input
switch, then connect them 5 minutes later.
Contact the dealer or the after-sales service if
the problem persists.
22 Relay Fault
1. The relay is abnormal
or short-circuited.
2. The sampling
circuit of the relay is
abnormal.
23 GFCI Chk Fail
The sampling of the GFCI
HCT is abnormal.
24 SPD Fail
The inverter is struck by
lightning.
1. Improve the lightning protection facilities
around the inverter.
2. Disconnect the AC output switch and DC
input switch, then connect them 5 minutes
later. Contact the dealer or the after-sales
service if the problem persists.
25
DC Switch
Fail
The tripping times of the
DC trip switch exceeds
the limit.
Contact the dealer or after-sales service.
26
Ref-V Chek
Fail
The reference circuit
fails.
Disconnect the AC output switch and DC input
switch, then connect them 5 minutes later.
Contact the dealer or the after-sales service if
the problem persists.
27 HCT Chk Fail
The AC sensor is
abnormal in sampling.
28 PID Error
1. Abnormal Ground
2. The PID module is
abnormal.
1. Check whether the DC wirings and AC
wirings are abnormal.
2. Check whether the PID module is abnormal
3. Contact your dealer or after-sales service.
To Next Page
Loading...
