Tesla Powerwall Flashing red logo

Inverter fault (AFCI, GFCI or RSD)

Severity

High

Safe to continue?

Technician required?

Yes

Last verified

September 2026

First safe check

Check the owner app for the fault description, then contact a certified installer — do not remove covers.

What does Flashing red logo mean?

A flashing red logo on the unit indicates an inverter fault. The documented causes are arc-fault (AFCI), ground-fault (GFCI) or rapid-shutdown (RSD) events. The stored energy may still be present, so the unit must be treated as energised.

Which models use this code?

Verified for

Tesla Powerwall

Not yet verified for: individual model series. This code is recorded at brand level until a document confirms it per family.

Most likely causes

Arc-fault, ground-fault or rapid-shutdown event

Manufacturer documented

The unit reported one of the protective events associated with the inverter.

Fault that persists after a power cycle

Possible

If the indication returns after an installer power cycle, service is required.

Safe checks you can perform

1
Read the app status
The owner app records the fault event and its time, which the installer needs.
2
Keep the enclosure closed
The unit stores energy after shutdown. No cover should be removed by anyone other than a certified installer.

These steps stay outside the enclosure. Never open high-voltage equipment, bypass safety devices or work on live wiring.

When to stop troubleshooting

Stop and contact a qualified technician if the fault returns immediately, the device smells burnt, visible wiring damage exists, the enclosure is hot to the touch, or the manufacturer specifies professional service.

Can a reset clear this fault?

Documented reset behaviour: sometimes. Use only the manufacturer-approved restart sequence for this device and never bridge or bypass a safety mechanism to clear a fault.

Related symptoms

Flashing red indicator

Related fault codes

Flashing white logoIdle; entering sleep state Side LED flashing rapidlyEnabled but lost gateway communication Side LED flashing slowlySolar input below 30 V Solid white logoNormal operation

Sources

Tesla Powerwall 3 Owner’s Manual
View
Manufacturer
Tesla Powerwall
Document version
—
Section / page
LED states
Verified
September 2026
A flashing red logo indicates an inverter fault such as AFCI, GFCI or RSD.

Disclaimer

EnergyFaults provides informational troubleshooting guidance. Electrical and high-voltage equipment should only be serviced by qualified professionals where required. Always follow the manufacturer documentation for your exact model.