User Manual THEIA HE-t String Inverters 357115.013, Issue 1.0, 2011 April 63
Grid fault (W/A) No detection of the grid,
not able to synchronize
with the grid or fault
within the country-
settings
- Verify if the AC circuit breaker is
ON and operational
- Measure that the grid voltage is
present at the AC terminals
- Check that the DC switch(es) is
ON and that the DC power is > 7W
- Check that the country settings
have been successfully set in
Setup>Grid Setup
- If country is set to Italy, has the
Self-Test failed. Run test again
GUI fault (W/A) Display is not responding - Turn off the AC side. Wait for 3
seconds and then turn on again.
Wait 30 seconds for the GUI to turn
on
- If still fault, contact your
distributor
High voltage on input side
(A)
DC voltage threshold of
600 V
DC
is exceeded
- Contact your distributor
Low voltage on input side
(A)
DC voltage is too low to
operate the inverter
- Fault is cleared automatically
when PV voltage exceeds 230 V
- If the inverter remains in this fault
during daylight, and the V
DC
is
>230V, contact your distributor
Low PV isolation resistance
(A)
PV isolation resistance is
below permitted level
- Check the position of the DC
jumper (See Jumper Position for
the System Setup)
- If the jumper is correctly
positioned, contact your distributor
Failure on DC side (W/A) Inverter failure on the DC
side
- Failure on the DC side. Other
W/A will be displayed
- If the inverter is in Shutdown, turn
off the AC side and then the DC
side. Wait for 30 seconds, then turn
on the AC side and then the DC
side
- If the fault persists, contact your
distributor
Failure on AC side (W/A) Inverter failure on the AC
side
- Failure on the AC side. Other
W/A will be displayed
- If the inverter is in Shutdown, turn
off the AC side and then the DC
side. Wait for 30 seconds, then turn
on the AC side and then the DC
side
- If the fault persists, contact your
distributor
High inverter temperature
(W/A)
Maximum permissible
internal inverter
temperature is exceeded
- Check that the ambient
temperature is within the
specification (See 10. Technical
Data)
- Check if the ventilation is
sufficient, the minimum distances
are compliant with those stated in
photovoltaikforum.com