SMA SUNNY ISLAND 3.0M Operating Manual page 77

SMA Solar Technology AG
No. Name
W 843 ComBoxWD
W 844 eHZ1ProtFail
W 845 eHZ2ProtFail
W 846 eHzInFail
W 847 ComHMFaill
W 848 PhsMtrComFail
W 851 Sic1BatShort
W 852 Sic1BatVtgHi
Operating Manual
Level Cause
1 The SBUKomBox (Meter Box)
watchdog has triggered.
1 Unsupported protocol detected
on eHZ 1 (feed-in & purchased
electricity meter)
1 Unsupported protocol detected
on eHZ 2 (PV production meter)
1 Reading heads of the eHZ inter-
changed in the input of the
SBUKomBox (Meter Box).
1 CAN communication with en-
ergy meter is faulty.
1 Faulty communication between
the Sunny Island and the
SMA Energy Meter: Electric
power per line conductor is not
available.
1 Battery reversely connected
or short circuit on PV charge
controller 1: Connection of the
battery to the Sunny Island
Charger 1 is reverse-poled or
there is a short circuit.
1
PV charge controller 1 bat-
tery overvoltage: Battery volt-
age at the Sunny Island Charg-
er 1 is too high.
10 Troubleshooting
Corrective measures
• Contact the Service (see Section 16
"Contact", page 161).
• Swap the optical probe
connections.
• Ensure that the data cables are
correctly installed.
• Ensure that the parameter
250.06 ComBaud is set to
115k Bd.
• Ensure that the data cables are
correctly installed.
• Ensure that the current firmware
version of the SMA Speedwire data
module is installed.
• Ensure that the battery is correctly
connected to the DC connection of
the Sunny Island Charger charge
controller.
• Disconnect the PV array from the
Sunny Island Charger and restart
the system. This will ensure that the
PV array is not short-circuited.
1. Ensure that the configuration of the
Sunny Island Charger charge
controller with the DIP switches is
correct.
2. Ensure that all DC sources and DC
loads are correctly configured and
connected.
3. Reset the off-grid system. Disconnect
the off-grid system, wait ten minutes
and restart.
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