delta solivia solar inverter error codes and fault messagesThe Delta Solivia range of solar inverters can develop a number of different faults, when a fault is present an error message will be displayed on the screen and usually one or a number of the LED’s will be lit. Below is a list of error messages, explanations on the error or fault and a list of actions to take to resolve the issue.

The LEDs on the front panel of the inverter display the operational state of the solar inverter. These are:

  • LED (A): Operation – displays the operational state.
  • LED (B): Earth Fault – displays an insulation resistance fault or PV grounding (GND) fault on the DC side.
  • LED (C): Failure – displays existing faults internally or externally and whether the grid feed-in operation has been interrupted.

If you have one of the error or fault messages below we recommend you follow the listed actions to take to remove the fault before contacting a company who can help you further such as Gold Coast Solar Power Solutions.

View the Delta Solivia Solar Inverter manual here.

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LED STATUS

 DISPLAY MESSAGE CAUSE

ACTION TO TAKE

green:
red:
yellow:
  Display communication faulty. If the fault persists after the device has been reset, please inform your service technician.
green:
red:
yellow:
AC frequency failure Grid frequency overshooting or undershooting specified limit range.  Check the grid frequency via the display in the N (NOW) menu.
green:
red:
yellow:
AC voltage
failure
Grid voltage overshooting or undershooting specified limit range. Check the grid voltage via the display in the N menu.
If no voltage present, check grid automatic circuit breaker.
green:
red:
yellow:
AC relay
failure
One of the anti-islanding protection output relays is faulty / defective. The solar inverter is defective.
Return the device.
green:
red:
yellow:
Calibration
ongoing
Check internal settings. Normal function before input mode.
green:
red:
yellow:
DC injection
failure
DC component of input side alternating current is too high. If the fault persists after the device has been reset, please inform your service technician.
green:
red:
yellow:
Error # 301 Internal communication
error or hardware fault.
If the fault persists after the device has  been reset, please inform your service technician.
green:
red:
yellow:
Error # 302 The device trips and
reverts to grid input mode
once the temperature has
dropped.
Check the installation site (no direct
sunlight, air circulation).
green:
red:
yellow:
Error # 506
Error # 508
Isolation resistance fault
on the DC side during
start-up phase (# 508) or
running phase (# 506).
Check the isolation resistance on the DC side of the PV modules.
green:
red:
yellow:
Isolation start up warning
Isolation running warning
Isolation resistance fault
on the DC side during
start-up phase or running
phase.
You must check the isolation resistance on the DC side of the PV modules.
Solar inverter is still feeding!
green:
red:
yellow:
PV+ grounding fault
PV- grounding fault
Connection PV+ (PV-)
to GND is interrupted or
wrong pole is connected
to GND.
Check that the GND connection has been
made correctly and/or check the fuse in
the grounding path. Change the fuse if
necessary. The solar inverter remains in
feed-in operation.
green:
red:
yellow:
Revision error Versions of hard and software are not compatible. If the fault persists after the device has been reset, please inform your service technician.
green:
red:
yellow:
Self-test ongoing Initialization of solar inverter on start-up. The first time the solar inverter is started up: Normal function with a PV cell voltage
of between 100 V and 150 V.
green:
red:
yellow:
PV power too low Insufficient input power. Insufficient insolation (dawn/twilight).
Check the PV cell voltage via the display in the N menu.
green:
red:
yellow:
PV voltage too low PV generator voltage between 100 V and 150 V. Insufficient insolation.
Check the PV cell voltage via the display in the N menu.
green:
red:
yellow:
Synchronize to AC Checks grid voltage and
grid frequency for grid
input mode.
Normal function before input mode.
green:
red:
yellow:
Varistor warning Internal varistor at the DC
input is defective.
Although you can, in theory, carry on using the solar inverter, the varistors should be replaced at the earliest
opportunity. This will involve returning the device.

 

Need service for your solar power system?

Delta Solivia Solar InverterFor further details check out the Delta Solivia Solar Inverter manual here. The Delta Solivia range of inverters came came with a 10 year warranty against defects so if the instructions above hasn’t rectified the error the best thing to do is to contact the company who installed your inverter originally. If your inverter is outside the warranty period you will need to talk to a local solar accredited electrician for further assistance such as Gold Coast Solar Power Solutions.

If you’re in the Gold Coast or Brisbane area contact Gold Coast Power Solutions as our solar power experts will be able to provide you with further assistance.

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Delta Solivia Solar Inverter Fault & Error Messages
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