EnaSolar error codes explained

What 7 EnaSolar inverter fault and error codes mean, in plain English, with safe checks you can do and when to call a licensed electrician.

Guide only. This information is a general guide taken from manufacturer documentation. All electrical work must be performed by a licensed electrician. Never open your inverter, battery or switchboard. If you see smoke, smell burning or see damage, keep clear and call 000.
CodeMessage & meaningModelType
NO DCFault
NO DC

Check that the DC switch is turned ‘ON’, the solar array is fully exposed to sunlight and the polarity of the DC input.

What you can do

  • Do not touch the DC isolators, cables or connectors
  • Call your installer - this points to a wiring problem that needs a licensed electrician

GT series grid-tie inverter · Guide only. All work must be done by a licensed electrician.

GT series grid-tie inverter Inverter
NO ACInfo
NO AC

Check that the AC switch is turned ‘ON’ and the AC circuit breaker is on at the switchboard.

What you can do

  • Check whether the rest of your house or street has power, and check your network operator's outage map
  • Check the switchboard for a tripped solar/inverter breaker - reset it once only; if it trips again, leave it off and call an electrician
  • Once normal power is back the inverter usually reconnects on its own within a few minutes
  • If the power is normal but the alarm stays, call your installer

GT series grid-tie inverter · Guide only. All work must be done by a licensed electrician.

GT series grid-tie inverter Inverter
PV Earth FaultSafety-Critical
PV Earth Fault

Isolated Earth - this means there is less than 50kΩ between the positive or negative DC input and earth. That is the cabling for the solar array has developed a fault from either the positive or negative input to ground. This will display the message ‘PV Earth Fault’ and will continue to operate.

What you can do

  • Do not touch the panels, rooftop isolators or DC cables
  • Note the code and whether it appears in wet weather or early morning - this helps the electrician
  • If it clears by itself once things dry out, still let us know if it keeps returning
  • Call a licensed electrician or Total Solar - insulation and earth faults need testing with proper equipment

GT series grid-tie inverter · Guide only. All work must be done by a licensed electrician.

GT series grid-tie inverter Inverter
PV Earth FuseSafety-Critical
PV Earth Fuse

Positive or negative earth - If this alarm is generated, a current greater than 1A has blown the Earth Fuse. Once the fault has been rectified, the fuse will need to be replaced. See below for the procedure.

What you can do

  • Do not touch the panels, rooftop isolators or DC cables
  • Note the code and whether it appears in wet weather or early morning - this helps the electrician
  • If it clears by itself once things dry out, still let us know if it keeps returning
  • Call a licensed electrician or Total Solar - insulation and earth faults need testing with proper equipment

GT series grid-tie inverter · Guide only. All work must be done by a licensed electrician.

GT series grid-tie inverter Inverter
Failed to Join NetworkWarning
Failed to Join Network

Check that the wireless settings match with the access point.

What you can do

  • Check that your home Wi-Fi/internet is working and restart your router
  • Wait an hour - monitoring often reconnects by itself
  • If the inverter screen also shows a fault, or the alarm stays for more than a day, call your installer

GT series grid-tie inverter · Guide only. All work must be done by a licensed electrician.

GT series grid-tie inverter Inverter
Failed to AuthenticateFault
Failed to Authenticate

Check that the WEP key and WEP authentication type, or WPA passphrase, match with the access point.

What you can do

  • Note the code, date and time and check the monitoring app
  • Restart the system once using the owner shutdown/start-up steps in your manual if it allows
  • If it comes back, call your installer

GT series grid-tie inverter · Guide only. All work must be done by a licensed electrician.

GT series grid-tie inverter Inverter
Failed to AssociateInfo
Failed to Associate

Check the WEP key and WEP authentication type, or WPA passphrase, match with the access point. Check that MAC filtering is not enabled on the access point. If it is then disable it, or add the MAC address of the inverter to the allowed list.

What you can do

  • This normally means the battery is low or has reached its reserve level
  • Let the system recharge from solar or the grid - check the state of charge in the app
  • If the battery never charges or stays at 0% for more than a day of sunshine, call your installer

GT series grid-tie inverter · Guide only. All work must be done by a licensed electrician.

GT series grid-tie inverter Inverter

Common EnaSolar questions

What does EnaSolar NO DC "NO DC" mean?

Check that the DC switch is turned ‘ON’, the solar array is fully exposed to sunlight and the polarity of the DC input. Do not touch the DC isolators, cables or connectors This is a guide only; any electrical work must be done by a licensed electrician.

What does EnaSolar Failed to Authenticate "Failed to Authenticate" mean?

Check that the WEP key and WEP authentication type, or WPA passphrase, match with the access point. Note the code, date and time and check the monitoring app This is a guide only; any electrical work must be done by a licensed electrician.

What does EnaSolar NO AC "NO AC" mean?

Check that the AC switch is turned ‘ON’ and the AC circuit breaker is on at the switchboard. Check whether the rest of your house or street has power, and check your network operator's outage map This is a guide only; any electrical work must be done by a licensed electrician.

What does EnaSolar PV Earth Fault "PV Earth Fault" mean?

Isolated Earth - this means there is less than 50kΩ between the positive or negative DC input and earth. That is the cabling for the solar array has developed a fault from either the positive or negative input to ground. This will display the message ‘PV Earth Fault’ and will continue to operate. Do not touch the panels, rooftop isolators or DC cables This is a guide only; any electrical work must be done by a licensed electrician.

What does EnaSolar PV Earth Fuse "PV Earth Fuse" mean?

Positive or negative earth - If this alarm is generated, a current greater than 1A has blown the Earth Fuse. Once the fault has been rectified, the fuse will need to be replaced. See below for the procedure. Do not touch the panels, rooftop isolators or DC cables This is a guide only; any electrical work must be done by a licensed electrician.

Need help with this fault?

Get a licensed electrician to call you back.

Total Solar can help: our licensed electricians install and service systems. Based in Ellenbrook, WA, with Victoria and Queensland also available.

Or call 1300 209 503

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Sources

Meanings are summarised from these manufacturer documents. Check your own model's manual, as codes vary between models and firmware versions.

EnaSolar is a trademark of its owner. Total Solar is not affiliated with the manufacturer unless stated. All fault code guides

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