Service Codes Displayed; Service Display; General Service Codes; Total Failure - Fronius IG 300 Operating Instructions Manual

Service codes displayed

Service display

The FRONIUS IG is able to perform a system self diagnosis that automatically detects
many faults that may occur and shows them on the display unit. This system means that
you are promptly made aware of malfunctions in the FRONIUS IG, the photovoltaic
system or any installation or operating faults.
If the system self diagnosis has detected a specific fault, the associated service code will
be shown on the display.
General service If the open-circuit voltage of the solar modules is still too low, then the message „DC
codes
will appear on the display unit.
If the open-circuit voltage of the solar modules increases to over 170 V, the FRONIUS IG
will start synchronising with the mains (display „SYNC
If there is still insufficient power at the solar modules, then the message „POWER
will appear on the display unit.
After waiting for a short while, FRONIUS IG will resume mains synchronisation (Display:
„SYNC

Total failure

If the display fails to come on even some time after sunrise, check the open-circuit
voltage of the solar modules.
If the open-circuit voltage of the modules (at the FRONIUS IG connections) is less than
170 V, it is reasonable to assume that there is a fault elsewhere in the photovoltaic
system.
If the open-circuit voltage of the solar modules (at the FRONIUS IG connections) is more
than 170 V, this may indicate a basic fault in the FRONIUS IG. In this event, always notify
a FRONIUS-trained service engineer.
NOTE! Service codes may sometimes appear briefly as a result of the FRONI-
US IG's control response. If the FRONIUS IG then continues working with no
sign of any problem, this means that there was no fault.
").
AC
55
").
AC
"
LOW
"
LOW