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Operation and Installation Manual for SOLIVIA 2.0/2.5/3.0/3.3/3.6/5.0 EU G4 TR
12. Diagnostics and Troubleshooting
EN
12.3 Overview of Failure Messages/Troubleshooting
LEDs
Display message
Message description
Fault correction
Warning ###
Internal failure ("Warning" + three-digit number)
► Please contact Delta Support.
Failure ###
Internal failure ("Failure" + three-digit number)
► Please contact Delta Support.
L1 Voltage failure
AC overvoltage or undervoltage on phase L.
► Check the grid voltage shown on the display (
412 Current Data AC
menu).
► If no voltage is present, check the circuit breaker.
L1 Frequency error
AC high frequency or low frequency on phase L.
► Check the grid frequency shown on the display (
412 Current Data AC
menu).
► If no voltage is present, check the automatic circuit breaker.
DC inj. Failure
DC feed-in failure.
► Restart the solar inverter. Contain your maintenance technician if the
failure persists.
L1 Islanding
Frequency shift failure on phase L.
► Ask your electricity supply company about the actual state of the grid.
► Check the installation.
► Restart the solar inverter. Contain your maintenance technician if the
failure persists.
PV Power too low
The solar power is too low.
Insufficient solar irradiation (dawn/dusk).
► Check the PV cell voltage shown on the display (
416 Current Data PV
menu).
Auto test failure
Failure during Italian autotest. For Italy only.
► Repeat the autotest.
PV1 ISO startup warn
The startup insulation is too low.
► Check the insulation resistance at the DC side of the PV modules.
PV1 ISO running warn
The insulation voltage is too low.
► Check the insulation resistance on the PV modules.
PV1+ Grounding warn
PV1- Grounding warn
DC+/DC- not correctly grounded.
► Check the GND connection.
► Check the insulation resistance of the GND connection.
► Replace the grounding kit if necessary.
PV1 ISO startup fail
The startup insulation is too low.
► Check the insulation resistance at the DC side of the PV modules.
