The Complete Guide To GoodWe Inverter Error Codes

The inverter cannot see mains power on its AC side. Usually a tripped solar supply main switch, a power outage in the street, or a loose AC connection.

The mains voltage has gone above the band the inverter is allowed to run in, so it has paused. Common on sunny days in streets with lots of solar; it reconnects itself once the grid settles.

The mains voltage has dropped below the band the inverter is allowed to run in, so it has paused. It reconnects itself once the grid settles.

The inverter saw a sudden very high mains voltage and paused to protect itself. A one-off is a grid event and it reconnects itself; if it keeps happening the grid supply needs looking at.

The mains voltage averaged over ten minutes has been above the limit, which is a sign your street's supply is running high. The inverter reconnects itself; if it recurs the network may need to adjust the supply.

The grid frequency has risen above the allowed band, so the inverter has paused. This is a network event and it reconnects itself once the frequency is back to normal.

The grid frequency has dropped below the allowed band, so the inverter has paused. This is a network event and it reconnects itself once the frequency is back to normal.

The grid frequency is changing faster than the inverter's grid standard allows, so it has paused and will reconnect itself once the grid steadies. Older NS and DNS units with the small screen number their faults differently, so check the message text as well.

The inverter shut itself off because the grid went away while your appliances briefly held the voltage up, which is the safety behaviour the rules require, and it reconnects itself once the grid is genuinely back. Older NS and DNS units with the small screen number their faults differently, so check the message text as well.

The mains voltage dipped for longer than the inverter is allowed to ride through, so it disconnected. This is a network event and it reconnects itself once the grid is back to normal.

The mains voltage stayed high for longer than the inverter is allowed to ride through, so it disconnected. This is a network event and it reconnects itself once the grid is back to normal.

The grid frequency has drifted outside the allowed band, so the inverter has paused. This is a network event, not a fault in the inverter, and it restarts itself once the frequency is back to normal.

The inverter cannot see mains power on its AC side. Usually a tripped solar supply main switch, a power outage in the street, or a loose AC connection.

The mains voltage at your house has gone outside the band the inverter is allowed to run in, so it has paused. GoodWe says it restarts itself within five minutes once the grid is back to normal; on sunny days in streets with lots of solar this is common.

The inverter found too much DC mixed into the AC power it sends to the grid. A one-off is usually a grid blip and clears with a restart; if it keeps coming back the output stage needs a look. DC on the AC side is a protection fault, so we treat it as a call.

The inverter found more DC mixed into its AC output than the rules allow. GoodWe says it recovers on its own when the cause is a grid event; if it keeps happening and output suffers, it needs a look. DC on the AC side is a protection fault, so we treat it as a call.

The inverter found well over the allowed amount of DC mixed into its AC output. It recovers on its own after a grid event; if it keeps happening the output stage needs a look. DC on the AC side is a protection fault, so we treat it as a call.

The inverter tripped its export or power limit because the load in the house changed suddenly. GoodWe says it recovers on its own; if it keeps happening the metering and limit settings need a look.

The voltage from the panels is above the inverter's maximum, which GoodWe says comes from too many panels in one string. The string needs checking and reconfiguring before it damages the inverter.

A solar input is carrying more current than the inverter's hardware allows, from too many strings on one input or damage inside the unit. GoodWe allows one restart after five minutes off; if it comes back it needs an electrician.

A solar input is carrying more current than the inverter's software limit allows, from the way the strings are configured or damage inside the unit. GoodWe allows one restart after five minutes off; if it comes back it needs an electrician.

One of the solar strings is wired with the polarity reversed. This is an installation fault and needs an electrician to correct it.

The voltage coming from the panels is at or above the inverter's maximum input, which happens when too many panels are in one string, especially on cold clear mornings. The string needs checking before it damages the inverter.

The inverter detected an electrical arc in the solar DC wiring and shut down. Arcing is a fire risk, so leave the system off and have the DC connectors and cabling inspected rather than resetting it.

The inverter detected more than 30 milliamps leaking to earth while running and tripped. GoodWe says a one-off can be a passing wiring issue, but if it recurs the insulation of the solar wiring to earth is too low and needs testing.

The inverter detected more than 60 milliamps leaking to earth while running and tripped. If it recurs the insulation of the solar wiring to earth is too low and needs testing.

The inverter detected more than 150 milliamps leaking to earth while running and tripped, which is a large leak. The insulation of the solar wiring to earth needs testing before it runs again.

The inverter saw the current leaking to earth jump suddenly while running and tripped. If it recurs the insulation of the solar wiring to earth is too low and needs testing.

The inverter measured too little insulation between the solar DC wiring and earth, usually moisture in a connector or isolator, a damaged cable or a faulty panel. On Australian units the buzzer sounds for a minute and again every half hour until it is fixed.

The inverter's protective earth is not connected properly, or the active and neutral are swapped on a system with a grounded string. The inverter will not run without a sound earth, so this needs an electrician.

The sensor that measures current leaking to earth is giving abnormal readings, so the inverter will not run without that protection. GoodWe allows one restart after five minutes off; if it comes back it is an internal fault.

The circuit that watches for current leaking to earth has failed its check, so the inverter will not run without that protection. GoodWe allows one restart via the DC switch; if it comes back it is an internal fault for an electrician.

The inverter detected current leaking to earth that should not be there, which is a safety trip. It usually points to moisture or damage in the DC wiring or panels, or a neutral or earth problem on the AC side.

The inverter measured too little insulation between the solar DC wiring and earth, usually moisture in a connector or isolator, a damaged cable or a faulty panel. On Australian units the buzzer sounds for a minute and again every half hour until it is fixed.

The inside of the inverter is hotter than it is allowed to run, from a poorly ventilated spot, a hot day or a fan not working. It comes back on its own once it cools; if it recurs on ordinary days the fan or airflow needs a look. Heat shutdowns point at a failing fan, a blocked vent or a bad installation spot, so we treat them as a call.

The inverter's cooling fan is not running properly because of its supply, a mechanical problem or age. It keeps producing but will run hotter and wind back on warm days until the fan is replaced. A fan fault lets the inverter overheat, so we treat it as a call.

The inside of the inverter is hotter than it is allowed to run and it has wound back or stopped to protect itself. It comes back on its own once it cools. Heat shutdowns point at a failing fan, a blocked vent or a bad installation spot, so we treat them as a call.

The sensor that measures the inverter's AC output current is giving abnormal readings, so the inverter cannot run safely. GoodWe allows one restart via the DC switch; if it comes back it is an internal fault for an electrician.

The voltage on the inverter's internal DC bus went too high and it has stopped to protect itself. This can be a string configuration issue or a fault inside the unit, so it needs an electrician after the one restart GoodWe allows.

The inverter could not read or write its settings memory. GoodWe says to restart it once via the DC switch; if the message comes back, the control board needs a look. Internal and hardware faults need testing with the right instruments, so we treat them as a call.

The processors inside the inverter have stopped talking to each other. GoodWe says to switch off AC and DC, wait five minutes and restart; if it stays it is an internal fault for the service centre. Internal and hardware faults need testing with the right instruments, so we treat them as a call.

The sensor that measures the inverter's AC output current is giving abnormal readings, so the inverter cannot run safely. GoodWe allows one restart after five minutes off; if it comes back it is an internal fault.

The inverter has found a fault inside itself that it cannot name more precisely. GoodWe allows one restart after five minutes off; if it comes back it needs the service centre.

The voltage on the inverter's internal DC bus went too high, usually from the panel voltage being too high or a sensing fault inside the unit. GoodWe allows one restart after five minutes off; if it comes back it needs an electrician.

The relay that connects the inverter to the grid failed its self-check, so the inverter stays disconnected. GoodWe allows one restart via the DC switch; if it comes back, the relay or its wiring needs an electrician.

The boards inside the inverter have stopped talking to each other. A restart via the DC switch often clears a one-off; if it comes back a board needs attention. Internal and hardware faults need testing with the right instruments, so we treat them as a call.