ABB / Power-One Aurora error codes explained

The alarm appears when the in- Check whether the composition of the PV array al-

What you can do

• Check solar generation in the app compared with similar days
• Do not touch the DC isolators, cables or connectors, and don't go on the roof
• If it doesn't clear by itself, call your installer

PVI-3.0/3.6/3.8/4.2-TL (Aurora UNO) · Guide only. All work must be done by a licensed electrician. Get help with this code

This alarm is indicated when the Measure the input voltage in the inverter with a

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

PVI-3.0/3.6/3.8/4.2-TL (Aurora UNO) · Guide only. All work must be done by a licensed electrician. Get help with this code

The main microcontroller is un- This is an error inside the inverter that cannot be

What you can do

• Check the monitoring app for the alarm and whether export/consumption readings look wrong
• Restart your home router if the meter talks over Wi-Fi or LAN
• Call your installer - meter and CT wiring is inside the switchboard and must be checked by a licensed electrician

PVI-3.0/3.6/3.8/4.2-TL (Aurora UNO) · Guide only. All work must be done by a licensed electrician. Get help with this code

Error inside the inverter. The The alarm can be triggered by causes external to

What you can do

• Check the app - the battery may show as offline or with no state of charge
• Restart the system once using the shutdown and start-up steps in your owner's manual (battery last off, first on, unless your manual says otherwise)
• If the alarm comes back, call your installer - battery communication cables must be checked by them

PVI-3.0/3.6/3.8/4.2-TL (Aurora UNO) · Guide only. All work must be done by a licensed electrician. Get help with this code

The alarm is generated only when Make sure the setting of the “IN MODE” switch has

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

PVI-3.0/3.6/3.8/4.2-TL (Aurora UNO) · Guide only. All work must be done by a licensed electrician. Get help with this code

Internal inverter temperature Wait for the temperatures to which the inverter is

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

PVI-3.0/3.6/3.8/4.2-TL (Aurora UNO) · Guide only. All work must be done by a licensed electrician. Get help with this code

Error inside the inverter regarding Error inside the inverter that cannot be checked ex-

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

PVI-3.0/3.6/3.8/4.2-TL (Aurora UNO) · Guide only. All work must be done by a licensed electrician. Get help with this code

The alarm is generated when a Error inside the inverter that cannot be checked ex-

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

PVI-3.0/3.6/3.8/4.2-TL (Aurora UNO) · Guide only. All work must be done by a licensed electrician. Get help with this code

Error inside the inverter regarding If the alarm is present early in the morning it could

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

PVI-3.0/3.6/3.8/4.2-TL (Aurora UNO) · Guide only. All work must be done by a licensed electrician. Get help with this code

Time taken to execute the au- Error inside the inverter that cannot be checked ex-

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

PVI-3.0/3.6/3.8/4.2-TL (Aurora UNO) · Guide only. All work must be done by a licensed electrician. Get help with this code

The error is generated if the di- If the grid voltage is strongly distorted, report this

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

PVI-3.0/3.6/3.8/4.2-TL (Aurora UNO) · Guide only. All work must be done by a licensed electrician. Get help with this code

Error inside the inverter Error inside the inverter that cannot be checked ex-

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

PVI-3.0/3.6/3.8/4.2-TL (Aurora UNO) · Guide only. All work must be done by a licensed electrician. Get help with this code

Error in the internal measurement Error inside the inverter that cannot be checked

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

PVI-3.0/3.6/3.8/4.2-TL (Aurora UNO) · Guide only. All work must be done by a licensed electrician. Get help with this code

Error in the internal measurement This is an error inside the inverter that cannot be

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

PVI-3.0/3.6/3.8/4.2-TL (Aurora UNO) · Guide only. All work must be done by a licensed electrician. Get help with this code

Measurement of the internal volt- Check the grid conditions for instabilities caused by

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

PVI-3.0/3.6/3.8/4.2-TL (Aurora UNO) · Guide only. All work must be done by a licensed electrician. Get help with this code

Measurement of the output volt- This is an error inside the inverter that cannot be

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

PVI-3.0/3.6/3.8/4.2-TL (Aurora UNO) · Guide only. All work must be done by a licensed electrician. Get help with this code

Alarm is triggered when internal Wait for the temperatures to which the inverter is

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

PVI-3.0/3.6/3.8/4.2-TL (Aurora UNO) · Guide only. All work must be done by a licensed electrician. Get help with this code

Error inside the inverter Error inside the inverter that cannot be checked ex-

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

PVI-3.0/3.6/3.8/4.2-TL (Aurora UNO) · Guide only. All work must be done by a licensed electrician. Get help with this code

Excessive temperature mea- Check that the inverter is not exposed to direct

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

PVI-3.0/3.6/3.8/4.2-TL (Aurora UNO) · Guide only. All work must be done by a licensed electrician. Get help with this code

Input voltage (Vin) higher than Measure the input voltage inside the inverter

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

PVI-3.0/3.6/3.8/4.2-TL (Aurora UNO) · Guide only. All work must be done by a licensed electrician. Get help with this code

The error occurs if the difference Error inside the inverter that cannot be checked ex-

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

PVI-3.0/3.6/3.8/4.2-TL (Aurora UNO) · Guide only. All work must be done by a licensed electrician. Get help with this code

Insufficient sunlight. Wrong con- Check the inverter input voltage.

What you can do

• This is normal at dawn, dusk or in heavy cloud
• If it shows in full sun, check the app for low generation and look for new shading from the ground (don't go on the roof)
• If generation stays low on sunny days, call your installer

PVI-3.0/3.6/3.8/4.2-TL (Aurora UNO) · Guide only. All work must be done by a licensed electrician. Get help with this code

Insufficient sunlight Wrong con- Check the inverter input voltage.

What you can do

• This is normal at dawn, dusk or in heavy cloud
• If it shows in full sun, check the app for low generation and look for new shading from the ground (don't go on the roof)
• If generation stays low on sunny days, call your installer

PVI-3.0/3.6/3.8/4.2-TL (Aurora UNO) · Guide only. All work must be done by a licensed electrician. Get help with this code

This error warning appears dur- Check the grid voltage on the inverter. If absent,

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

PVI-3.0/3.6/3.8/4.2-TL (Aurora UNO) · Guide only. All work must be done by a licensed electrician. Get help with this code

Overvoltage surge arresters situ- Look at the inspection window present on each

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

PVI-3.0/3.6/3.8/4.2-TL (Aurora UNO) · Guide only. All work must be done by a licensed electrician. Get help with this code