Steca error codes explained

The boost converter is defective, the inverter is not injecting into the grid or is injecting at reduced power.

What you can do

• Note the code, time and whether it clears by itself
• You may restart the system once using the owner shutdown/start-up steps in your manual. Do not open covers or touch cabling
• If the code returns or the system stays offline, call your installer - internal faults are a warranty/technician job

StecaGrid coolcept / coolcept-x (1500-4200, 3010-4200x) · Guide only. All work must be done by a licensed electrician. Get help with this code

The inverter cannot identify an internal component, or it does not match the other components. The inverter cannot inject into the grid.

What you can do

• Note the code, time and whether it clears by itself
• You may restart the system once using the owner shutdown/start-up steps in your manual. Do not open covers or touch cabling
• If the code returns or the system stays offline, call your installer - internal faults are a warranty/technician job

StecaGrid coolcept / coolcept-x (1500-4200, 3010-4200x) · Guide only. All work must be done by a licensed electrician. Get help with this code

An internal component of the inverter is defective. It is possible that the inverter injects into the grid not at all, or with reduced capacity.

What you can do

• Note the code, time and whether it clears by itself
• You may restart the system once using the owner shutdown/start-up steps in your manual. Do not open covers or touch cabling
• If the code returns or the system stays offline, call your installer - internal faults are a warranty/technician job

StecaGrid coolcept / coolcept-x (1500-4200, 3010-4200x) · Guide only. All work must be done by a licensed electrician. Get help with this code

The connection of the internal components is interrupted. The inverter is not injecting into the grid.

What you can do

• Note the code, time and whether it clears by itself
• You may restart the system once using the owner shutdown/start-up steps in your manual. Do not open covers or touch cabling
• If the code returns or the system stays offline, call your installer - internal faults are a warranty/technician job

StecaGrid coolcept / coolcept-x (1500-4200, 3010-4200x) · Guide only. All work must be done by a licensed electrician. Get help with this code

Boost converter not recognised

What you can do

• Note the code, time and whether it clears by itself
• You may restart the system once using the owner shutdown/start-up steps in your manual. Do not open covers or touch cabling
• If the code returns or the system stays offline, call your installer - internal faults are a warranty/technician job

StecaGrid coolcept / coolcept-x (1500-4200, 3010-4200x) · Guide only. All work must be done by a licensed electrician. Get help with this code

There is an inconsistency between the selected country setting and the country setting stored in memory.

What you can do

• Don't change installer settings yourself
• Call your installer - country/grid settings and configuration must be set by them or the manufacturer

StecaGrid coolcept / coolcept-x (1500-4200, 3010-4200x) · Guide only. All work must be done by a licensed electrician. Get help with this code

The inverter cannot inject into the grid because it has no valid parameters.

What you can do

• Don't change installer settings yourself
• Call your installer - country/grid settings and configuration must be set by them or the manufacturer

StecaGrid coolcept / coolcept-x (1500-4200, 3010-4200x) · Guide only. All work must be done by a licensed electrician. Get help with this code

In spite of capacity reduction, the maximum permissible temperature is exceeded. The inverter does not inject into the grid until the permissible temperature range is reached.

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

StecaGrid coolcept / coolcept-x (1500-4200, 3010-4200x) · Guide only. All work must be done by a licensed electrician. Get help with this code

A setting failed, for example during initial commissioning, because it has not been properly adopted.

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

StecaGrid coolcept / coolcept-x (1500-4200, 3010-4200x) · Guide only. All work must be done by a licensed electrician. Get help with this code

The internal fan of the inverter is defective. It is possible that the inverter injects into the grid with reduced capacity.

What you can do

• From outside, check that nothing is blocking the vents
• Don't open the unit
• Call your installer to arrange a fan check or replacement

StecaGrid coolcept / coolcept-x (1500-4200, 3010-4200x) · Guide only. All work must be done by a licensed electrician. Get help with this code

The protective earth is not connected. For safety reasons the inverter is not allowed to inject into the grid.

What you can do

• Keep clear - do not touch the inverter, frames or cabling
• Leave the system off if it has shut down
• If you see smoke, smell burning or hear crackling, keep everyone away and call 000
• Call a licensed electrician or Total Solar to test the earthing

StecaGrid coolcept / coolcept-x (1500-4200, 3010-4200x) · Guide only. All work must be done by a licensed electrician. Get help with this code

The DC current power share that is injected by the inverter into the grid, exceeds the permissible value. Pursuant to statutory regulations, the inverter switches off automatically as long as this fault is pending.

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

StecaGrid coolcept / coolcept-x (1500-4200, 3010-4200x) · Guide only. All work must be done by a licensed electrician. Get help with this code

The grid frequency applied on the inverter exceeds the permissible value. Pursuant to statutory regulations, the inverter switches off automatically as long as this fault is pending.

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

StecaGrid coolcept / coolcept-x (1500-4200, 3010-4200x) · Guide only. All work must be done by a licensed electrician. Get help with this code

After switch-off, the inverter cannot inject again because the grid voltage exceeds the legally prescribed switch-on value.

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

StecaGrid coolcept / coolcept-x (1500-4200, 3010-4200x) · Guide only. All work must be done by a licensed electrician. Get help with this code

The grid frequency applied on the inverter is below the permissible value. Pursuant to statutory regulations, the inverter switches off automatically as long as this fault is pending.

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

StecaGrid coolcept / coolcept-x (1500-4200, 3010-4200x) · Guide only. All work must be done by a licensed electrician. Get help with this code

After switch-off, the inverter cannot inject again because the grid voltage is below the legally prescribed switch-on value.

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

StecaGrid coolcept / coolcept-x (1500-4200, 3010-4200x) · Guide only. All work must be done by a licensed electrician. Get help with this code

The grid is not carrying any voltage (self-run of the inverter). For safety reasons the inverter is not allowed to inject into the grid. It switches itself off as long as the error is present (display dark).

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

StecaGrid coolcept / coolcept-x (1500-4200, 3010-4200x) · Guide only. All work must be done by a licensed electrician. Get help with this code

The inverter has detected that a grid relay is defective; for this reason, it is not injecting into the grid.

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

StecaGrid coolcept / coolcept-x (1500-4200, 3010-4200x) · Guide only. All work must be done by a licensed electrician. Get help with this code

The grid voltage applied on the inverter exceeds the permissible value. Pursuant to statutory regulations, the inverter switches off automatically as long as this fault is pending.

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

StecaGrid coolcept / coolcept-x (1500-4200, 3010-4200x) · Guide only. All work must be done by a licensed electrician. Get help with this code

The output voltage averaged over the legally prescribed time period exceeds the permissible tolerance range. The inverter switches off automatically as long as this fault is pending.

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

StecaGrid coolcept / coolcept-x (1500-4200, 3010-4200x) · Guide only. All work must be done by a licensed electrician. Get help with this code

The grid voltage applied on the inverter is below the permissible value. Pursuant to statutory regulations, the inverter switches off automatically as long as this fault is pending.

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

StecaGrid coolcept / coolcept-x (1500-4200, 3010-4200x) · Guide only. All work must be done by a licensed electrician. Get help with this code

The output voltage averaged over the legally prescribed time period is below the permissible tolerance range. The inverter switches off automatically as long as this fault is pending.

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

StecaGrid coolcept / coolcept-x (1500-4200, 3010-4200x) · Guide only. All work must be done by a licensed electrician. Get help with this code

After switching off, the inverter cannot resume feeding because the grid voltage exceeds the legally prescribed switch-on value.

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

StecaGrid coolcept / coolcept-x (1500-4200, 3010-4200x) · Guide only. All work must be done by a licensed electrician. Get help with this code

After switch-off, the inverter cannot inject again because the grid voltage is below the legally prescribed switch-on value.

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

StecaGrid coolcept / coolcept-x (1500-4200, 3010-4200x) · Guide only. All work must be done by a licensed electrician. Get help with this code

Intern.error

What you can do

• Note the code, time and whether it clears by itself
• You may restart the system once using the owner shutdown/start-up steps in your manual. Do not open covers or touch cabling
• If the code returns or the system stays offline, call your installer - internal faults are a warranty/technician job

StecaGrid coolcept / coolcept-x (1500-4200, 3010-4200x) · Guide only. All work must be done by a licensed electrician. Get help with this code