Redback error codes explained

Grid is disconnected or unavailable

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

Smart Hybrid SH4600/SH5000 · Guide only. All work must be done by a licensed electrician. Get help with this code

Grid frequency no longer within permissible 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

Smart Hybrid SH4600/SH5000 · Guide only. All work must be done by a licensed electrician. Get help with this code

Solar array voltage is too high

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

Smart Hybrid SH4600/SH5000 · Guide only. All work must be done by a licensed electrician. Get help with this code

Over temperature on the case

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

Smart Hybrid SH4600/SH5000 · Guide only. All work must be done by a licensed electrician. Get help with this code

Ground insulation impedance is too low

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

Smart Hybrid SH4600/SH5000 · Guide only. All work must be done by a licensed electrician. Get help with this code

Excessive ground leakage current

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

Smart Hybrid SH4600/SH5000 · Guide only. All work must be done by a licensed electrician. Get help with this code

Relay self-checking failure

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

Smart Hybrid SH4600/SH5000 · Guide only. All work must be done by a licensed electrician. Get help with this code

Excessive DC current in AC output

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

Smart Hybrid SH4600/SH5000 · Guide only. All work must be done by a licensed electrician. Get help with this code

Memory chip failure

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

Smart Hybrid SH4600/SH5000 · Guide only. All work must be done by a licensed electrician. Get help with this code

Internal communication failure

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

Smart Hybrid SH4600/SH5000 · Guide only. All work must be done by a licensed electrician. Get help with this code

Excessive DC Bus voltage level

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

Smart Hybrid SH4600/SH5000 · Guide only. All work must be done by a licensed electrician. Get help with this code

Output current sensor failure

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

Smart Hybrid SH4600/SH5000 · Guide only. All work must be done by a licensed electrician. Get help with this code

Detection circuit of ground leakage current failure

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

Smart Hybrid SH4600/SH5000 · Guide only. All work must be done by a licensed electrician. Get help with this code

Grid voltage no longer within permissible 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

Smart Hybrid SH4600/SH5000 · Guide only. All work must be done by a licensed electrician. Get help with this code

Battery Over Temperature

What you can do

• Check from a safe distance for heat, swelling, hissing, a burning smell or smoke - if you notice any, keep everyone away and call 000
• If nothing looks wrong, make sure the battery area is shaded and ventilated and nothing is stacked against it
• Let the battery cool; most units recover by themselves
• If the alarm keeps returning, call your installer

Smart Hybrid SH4600/SH5000 · Guide only. All work must be done by a licensed electrician. Get help with this code

Battery Under Temperature

What you can do

• Check from a safe distance for heat, swelling, hissing, a burning smell or smoke - if you notice any, keep everyone away and call 000
• If nothing looks wrong, make sure the battery area is shaded and ventilated and nothing is stacked against it
• Let the battery cool; most units recover by themselves
• If the alarm keeps returning, call your installer

Smart Hybrid SH4600/SH5000 · Guide only. All work must be done by a licensed electrician. Get help with this code

Li-Ion Battery Cell Voltage Differences

What you can do

• Note the code and the battery state of charge shown in the app
• Let the system run - some battery voltage protections clear by themselves after charging or discharging
• If the alarm stays or keeps returning, call your installer - don't open or disconnect the battery yourself

Smart Hybrid SH4600/SH5000 · Guide only. All work must be done by a licensed electrician. Get help with this code

Li-Ion Battery Over Total Voltage

What you can do

• Note the code and the battery state of charge shown in the app
• Let the system run - some battery voltage protections clear by themselves after charging or discharging
• If the alarm stays or keeps returning, call your installer - don't open or disconnect the battery yourself

Smart Hybrid SH4600/SH5000 · Guide only. All work must be done by a licensed electrician. Get help with this code

Battery Discharge Over Current

What you can do

• Turn off any very large loads that were running when the alarm appeared
• Wait - many over-current protections reset automatically
• If it keeps happening, call your installer

Smart Hybrid SH4600/SH5000 · Guide only. All work must be done by a licensed electrician. Get help with this code

Battery Charge Over Current

What you can do

• Turn off any very large loads that were running when the alarm appeared
• Wait - many over-current protections reset automatically
• If it keeps happening, call your installer

Smart Hybrid SH4600/SH5000 · Guide only. All work must be done by a licensed electrician. Get help with this code

Battery Capacity Low

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

Smart Hybrid SH4600/SH5000 · Guide only. All work must be done by a licensed electrician. Get help with this code

Battery Under Total Voltage

What you can do

• Note the code and the battery state of charge shown in the app
• Let the system run - some battery voltage protections clear by themselves after charging or discharging
• If the alarm stays or keeps returning, call your installer - don't open or disconnect the battery yourself

Smart Hybrid SH4600/SH5000 · Guide only. All work must be done by a licensed electrician. Get help with this code

Battery Communication Fail

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

Smart Hybrid SH4600/SH5000 · Guide only. All work must be done by a licensed electrician. Get help with this code

Battery Output Short

What you can do

• Turn off any very large loads that were running when the alarm appeared
• Wait - many over-current protections reset automatically
• If it keeps happening, call your installer

Smart Hybrid SH4600/SH5000 · Guide only. All work must be done by a licensed electrician. Get help with this code