SMA SI 3324 Installation - Manual (Page 145)

SMA Technologie AG Troubleshooting/Problem Solving
Installation Guide SI3324/4248-14:SE2406 Page 145
18.2 Troubleshooting FAQs
Here you will find answers to frequently asked questions (FAQs):
1. The Sunny Island 3324/4248 does not switch to the running generator, even
though the generator control relay has closed (Gen_Request) (the "24-1
GenControl" parameter is set to "Direct", see Page 76).
- Check the generator fuses.
TR-TempOV Excessive transformer temperature:
The Sunny Island 3324/4248 has been
operated under overload conditions for
an extended period of time.
The ambient temperature is very high
while the Sunny Island 3324/4248 is
being operated with a heavy load. The Sunny Island 3324/4248 can only
restart when the transformer has cooled
by a minimum of 5°C.
Place the Sunny Island 3324/4248 in
standby mode for a few minutes to allow
the fans to cool the inverter.
Switch off some of the connected loads in
the stand-alone grid to avoid immediately
overloading the Sunny Island 3324/4248
after a restart.
If the "40-2 Autostart" parameter is set to
"On", the Sunny Island 3324/4248
automatically starts once the transformer
temperature has sunk by 5°C.
VAC-High Output voltage too high Check the value of the "22-1
VacNominal" parameter setting (see
section 17.2.2 "Adjustable System
Parameters" (Page 134)).
VAC-Low Output voltage too low Check the value of the "22-1
VacNominal" parameter setting (see
section 17.2.2 "Adjustable System
Parameters" (Page 134)). For an
explanation, refer to point 7 of section
18.2 "Troubleshooting FAQs" (S. 145).
Short-circuit in the system Check the system for a possible short-
circuit.
VBatHigh Battery voltage too high: Check the battery connections (see
section 5.2 "DC Connection" (Page 36)).
External charger with excessive
charging voltage Check the external charger.
One or more defective batteries with
high internal resistance Check the batteries.
VBatLow Battery voltage too low:
wrong parameter setting Check the value of the "23-1
VdcBatNominal" parameter setting (see
section 17.2.2 "Adjustable System
Parameters" (Page 134)).
Deeply discharged batteries Recharge the batteries as soon as
possible.
One or more defective batteries Check the batteries.
Watchdog Automatic reset If this fault frequently occurs please
contact the SMA hotline (see section 20
"Contact" (Page 151)).
Fault display Cause Fault correction