Page
23
of
26
Clenergy SPH Installation and Operation Manual
6 The failure verification test is complete.
Some common fault messages and resolutions are explained below. If the
resolution procedure does not resolve the problem, contact your equipment
installer or supplier for assistance. Actions shown in
bold letters
should only
be performed by a qualified electrician or electrical technician
.
Fault
Display
Possible actions
System
fault
No Utility
1.
No grid voltage.
Check the grid voltage by
multi-meter.
2.
Check grid connection, such as wire and connector to the
inverter.
3.
Check breaker between inverter and grid; if it is tripped,
DO NOT CLOSE again, get an electrician to check the
wiring and inverter.
Grid Fault
1.
Wait for grid power to return to normal. If the grid returns
to normal, the inverter will start again automatically
within 5 minutes.
2.
Check the grid voltage and frequency by
multi-meter.
Make sure grid voltage and frequency meet
the specifications.
3.
Contact your inverter service representative to discuss
adjusting the operating range, if permitted by the
electricity provider.
Impedance
Fault
1.
The grid impedance is higher than the permissible value.
2.
Wait for grid power to return to normal. If the grid returns
to normal, inverter will start again automatically within 5
minutes.
3
. Check the wires between inverter and grid.
For high
impedance
Connections get an electrician to increase the wire size.
4. Contact your inverter service representative to discuss
adjusting
The operating range, if permitted by the electricity
provider.
Isolation
Fault
1.
Check the impedance between PV (+) & PV (-) and
earth ground. The impedance must be larger than
8M
.
If the impedance is low a ground fault may exist in
the PV array or wiring. Contact your PV array service
provider or electrician.
2.
If above actions do not fix the problem, the isolation
detection circuit may be faulty. Contact your inverter
service representative.
Ground I
Fault
1.
This is caused by too high ground current.
2.
Disconnect the inverter from the grid power.
Check the
AC wiring and connectionsystem.
3.
After the cause is cleared, reconnect the grid power.
Check the status of the inverter.
4.
If above actions do not fix the problem, the GFCI circuit
may be faulty. Contact your inverter service
representative.
