SMA Solar Technology AG 9 Troubleshooting
Operating Manual SI60H-80H-BE-en-20 57
F 733 MstrLoss 4 Communication to the master is
interrupted.
•
Ensure that undamaged CAT5e
cables are used for communication
and that the cables are plugged in
correctly.
•
Ensure that the communication bus
is equipped with a terminator at
both ends.
W 734 Slv1Loss 1 Communication from the master to
slave 1 is interrupted.
W 735 Slv2Loss 1 Communication from the master to
slave 2 is interrupted.
W 738 GnSynLoss 1 Synchronization with the generator or
battery backup grid not successful.
• Ensure that the generator can be
started. It may be that the fuel level
is too low.
•
Ensure that a constant and stable
voltage is present at terminal AC2.
•
Ensure that the limiting values for
the voltage of the external energy
sources are correctly configured.
F 739 SPICom 3 Internal device communication of the
master is disturbed.
• Contact the SMA Service Line.
W 740 SPIComSlv1 1 Internal device communication of
slave 1 is disturbed.
W 741 SPIComSlv2 1 Internal device communication of
slave 2 is disturbed.
F 743 CANCom 3 Internal device CAN communication
of the master is disturbed.
•
Ensure that the terminators in the
communication bus are attached.
•
Ensure that undamaged CAT5e
cables are used for communication
and that the cables are plugged in
correctly.
• Contact the SMA Service Line.
W 744 CANComSlv1 1 Internal device CAN communication
of slave 1 is disturbed.
W 745 CANComSlv2 1 Internal device CAN communication
of slave 2 is disturbed.
W 747 InvTmpSnsSlv1 1 Temperature sensor on the
transformer of slave 1 is defective.
• Contact the SMA Service Line.
W 748 InvTmpSnsSlv2 1 Temperature sensor on the
transformer of slave 2 is defective.
W 750 InvTmpSnsSlv1 1 Temperature sensor on the heat sink
of slave 1 is defective.
• Contact the SMA Service Line.
W 751 InvTmpSnsSlv2 1 Temperature sensor on the heat sink
of slave 2 is defective.
W 753 DateInvalid 1 System time is invalid. • Select the parameter 250.02 Dt
and set the date. Select the
parameter 250.03 Tm and set the
time.
No. Name Level Cause Corrective measures
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