Zeversolar error codes explained

Communication between the master and slave CPU has failed.

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

Zeverlution 1000S-3000S · Guide only. All work must be done by a licensed electrician. Get help with this code

Reading or writing of EEPROM has failed.

What you can do

• Note the code, then restart the system once using the owner shutdown/start-up steps in your manual
• If the code comes back, call your installer - this is an internal fault that needs a licensed electrician or the manufacturer

Zeverlution 1000S-3000S · Guide only. All work must be done by a licensed electrician. Get help with this code

Output relay has failed.

What you can do

• Note the code, then restart the system once using the owner shutdown/start-up steps in your manual
• If the code comes back, call your installer - this is an internal fault that needs a licensed electrician or the manufacturer

Zeverlution 1000S-3000S · Guide only. All work must be done by a licensed electrician. Get help with this code

Output DC feed-in exceeds the permitted upper limit.

What you can do

• Restart the system once using the owner shutdown/start-up steps in your manual
• If it comes back, call your installer

Zeverlution 1000S-3000S · Guide only. All work must be done by a licensed electrician. Get help with this code

The voltage of DC bus exceeds the permitted upper limit.

What you can do

• Note the code, then restart the system once using the owner shutdown/start-up steps in your manual
• If the code comes back, call your installer - this is an internal fault that needs a licensed electrician or the manufacturer

Zeverlution 1000S-3000S · Guide only. All work must be done by a licensed electrician. Get help with this code

Output current is abnormal.

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

Zeverlution 1000S-3000S · Guide only. All work must be done by a licensed electrician. Get help with this code

Ground fault detection circuit is abnormal.

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

Zeverlution 1000S-3000S · Guide only. All work must be done by a licensed electrician. Get help with this code

Unknown error.

What you can do

• Note the code, then restart the system once using the owner shutdown/start-up steps in your manual
• If the code comes back, call your installer - this is an internal fault that needs a licensed electrician or the manufacturer

Zeverlution 1000S-3000S · Guide only. All work must be done by a licensed electrician. Get help with this code

The grid frequency is outside the permitted range.

What you can do

• This is caused by the mains frequency moving outside the allowed range, usually briefly
• The inverter reconnects by itself once the grid is stable
• If it keeps happening, note the times and call your installer

Zeverlution 1000S-3000S · Guide only. All work must be done by a licensed electrician. Get help with this code

The grid voltage is outside the permitted range.

What you can do

• This is usually caused by the mains supply, not the solar system
• The inverter normally reconnects by itself once grid voltage is back in range
• If it happens often (especially on sunny afternoons), note the times and call your installer - they can check the voltage and settings and talk to the network if needed

Zeverlution 1000S-3000S · Guide only. All work must be done by a licensed electrician. Get help with this code

The utility cannot be detected: no utility, grid disconnected, AC cables damaged, fuse broken or island mode.

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

Zeverlution 1000S-3000S · Guide only. All work must be done by a licensed electrician. Get help with this code

The residual current exceeds the permitted upper limit.

What you can do

• Keep clear and do not touch the inverter or cabling
• Note the code, date and time
• Call a licensed electrician or Total Solar - this alarm means current may be leaking to earth

Zeverlution 1000S-3000S · Guide only. All work must be done by a licensed electrician. Get help with this code

The voltage of the strings exceeds the permitted upper limit.

What you can do

• Do not touch the DC isolators or cables
• Note the time - this often shows on cold, very sunny mornings
• Call your installer - the panel strings may need to be checked against the inverter's limits

Zeverlution 1000S-3000S · Guide only. All work must be done by a licensed electrician. Get help with this code

The PV array's insulation resistance to ground is below the permitted value, or the insulation inside the inverter has failed.

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

Zeverlution 1000S-3000S · Guide only. All work must be done by a licensed electrician. Get help with this code

The internal temperature exceeds the permitted value.

What you can do

• Check from a safe distance that the inverter is shaded, has clear space around it and that nothing is blocking the vents
• It usually recovers once it cools down
• If it repeats often or you can hear a noisy/failed fan, call your installer

Zeverlution 1000S-3000S · Guide only. All work must be done by a licensed electrician. Get help with this code

Master and slave MCU measured different grid voltage.

What you can do

• This is usually caused by the mains supply, not the solar system
• The inverter normally reconnects by itself once grid voltage is back in range
• If it happens often (especially on sunny afternoons), note the times and call your installer - they can check the voltage and settings and talk to the network if needed

Zeverlution 1000S-3000S · Guide only. All work must be done by a licensed electrician. Get help with this code

Master and slave MCU measured different grid frequency.

What you can do

• This is caused by the mains frequency moving outside the allowed range, usually briefly
• The inverter reconnects by itself once the grid is stable
• If it keeps happening, note the times and call your installer

Zeverlution 1000S-3000S · Guide only. All work must be done by a licensed electrician. Get help with this code

Master and slave MCU measured different residual current.

What you can do

• Keep clear and do not touch the inverter or cabling
• Note the code, date and time
• Call a licensed electrician or Total Solar - this alarm means current may be leaking to earth

Zeverlution 1000S-3000S · Guide only. All work must be done by a licensed electrician. Get help with this code

Master and slave MCU measured different DC feed-in.

What you can do

• Restart the system once using the owner shutdown/start-up steps in your manual
• If it comes back, call your installer

Zeverlution 1000S-3000S · Guide only. All work must be done by a licensed electrician. Get help with this code

Master and slave MCU measured different grid frequency and voltage.

What you can do

• This is usually caused by the mains supply, not the solar system
• The inverter normally reconnects by itself once grid voltage is back in range
• If it happens often (especially on sunny afternoons), note the times and call your installer - they can check the voltage and settings and talk to the network if needed

Zeverlution 1000S-3000S · Guide only. All work must be done by a licensed electrician. Get help with this code