Does 1302 mean my inverter is broken?

Not by itself. SMA explains it as either a missing line or neutral connection or a failed utility grid. Outages and AC-side issues are far simpler than an inverter fault, which is why the first check is whether the grid is up.

Can I reset the breaker myself?

SMA lists checking the miniature circuit breaker among the corrective measures for a qualified person. If you suspect the breaker, tell your technician rather than working in the electrical panel yourself.

SMA event 1302 waiting for grid voltage: what it means and what to do

SMA event 1302 appears with the messages "Waiting for grid voltage", "Grid connection installation failure" and "Check grid and fuses". SMA explains that either a line or the neutral conductor is not connected, or the utility grid has failed. If the power is out in your area, the inverter waits for feed-in conditions to be met and starts feeding in again once they are; if your home has power and 1302 stays on, a technician needs to check the AC side.

Can wait

Common causes

A utility power outage.
The circuit breaker for the inverter is switched off.
A line or neutral conductor is not connected to the inverter.
The AC cable to the inverter is damaged or not connected correctly.

Safe steps to try

Check whether there is a power outage See whether the rest of your home has power, or check your utility's outage map. Grid-tied inverters stop exporting when the grid is down.
Wait for the grid to return SMA explains that while the conditions for feed-in are not met, the inverter waits, and that it starts feeding in again as soon as they are.
Book a technician if it persists with power on SMA marks the checks for this event, including the breaker, the line and neutral conductors and the AC cable, as work for a qualified person. Do not open the inverter, a disconnect, a junction box or any conduit, and do not touch the panels, racking or wiring.

When to call a professional

Call if your home has normal utility power and event 1302 is still showing after a few hours, or if it keeps coming back. That points to the breaker or AC wiring for the inverter, which needs a technician.

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Frequently asked questions

Does 1302 mean my inverter is broken?: Not by itself. SMA explains it as either a missing line or neutral connection or a failed utility grid. Outages and AC-side issues are far simpler than an inverter fault, which is why the first check is whether the grid is up.
Can I reset the breaker myself?: SMA lists checking the miniature circuit breaker among the corrective measures for a qualified person. If you suspect the breaker, tell your technician rather than working in the electrical panel yourself.