Who to hire for a solar inverter showing an error

Short answer

An accredited solar installer who is also a licensed electrician. Record the exact code before you ring — inverter faults divide broadly into grid-side problems (voltage or frequency outside limits, which may be your distributor's issue and not your system's), array-side problems, and inverter hardware failures, and the code usually tells a technician which of the three it is without attending.

Soon, not tonightIt will not usually get cheaper by waiting, and it is rarely worth an after-hours rate.

When it is someone else

Calling the wrong trade costs an attendance fee to be told so. These are the cases where this problem belongs to someone other than a Solar Installer.

  • your electricity distributor

    the code is a grid voltage or frequency fault. A system that shuts down in the middle of sunny days because grid voltage is too high is reporting a network condition, and the distributor can measure and sometimes adjust it.

What to do before anyone arrives

  1. Photograph the display, the exact code and the model and serial number.
  2. Note the time of day it happens. Mid-afternoon shutdowns on clear days are the classic signature of a grid over-voltage trip, not an inverter fault.
  3. Check the manufacturer's manual — many publish the code list, and some codes have a documented owner-level reset.
  4. Find the installation date. Inverter warranties are typically long and often still running.

What to ask when you book

  • What does this code mean on this model, and is it the inverter, the array or the grid?
  • Is the unit in warranty, and who claims it — you or me?
  • If it is a grid voltage issue, will you provide the logged data I need to raise it with the distributor?

What changes the price

No dollar figures here: this directory holds no price data and an invented range is worse than none. What follows is what makes one of these jobs cost more than the same job next door, which is the part you can actually use when comparing quotes.

  • Warranty status, which is the single biggest variable.
  • Whether the fault is the inverter itself or upstream of it.
  • Whether the replacement model requires changes to the string configuration.

What you can do yourself

Is this licensed work?

Licensed electrical work, plus industry accreditation for grid-connected PV where the system is being altered. Replacing an inverter usually requires the distributor to be notified.

There is no national register. Search the licence number with the regulator for the state the work is happening in.

Licensing thresholds and certificate requirements differ by state and change with amending regulation, so this page describes the mechanism rather than quoting a figure. The regulator’s own page is the current answer.

Common questions

Who should I hire for a solar inverter showing an error
An accredited solar installer who is also a licensed electrician. Record the exact code before you ring — inverter faults divide broadly into grid-side problems (voltage or frequency outside limits, which may be your distributor's issue and not your system's), array-side problems, and inverter hardware failures, and the code usually tells a technician which of the three it is without attending.
Why does my solar shut down on the sunniest days?
That is the pattern for a grid over-voltage trip: when lots of local systems export at once, the voltage at your connection rises, and inverters are required to disconnect above a set limit. It is not a fault in your system — and the data logged by your inverter is the evidence to take to your distributor.

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Who to hire for

General information about who does what, not advice about your specific job. Licensing, consumer law and council rules differ by state and change; the regulator for your state is the current source. More guides to hiring a tradesperson.