Brentwood, CA · East Contra Costa
Solar Inverter Repair and Replacement in Brentwood, CA
The inverter turns the panels' output into power your home can use, so when it fails the whole system can look dead. Here is how to tell what you have, what repair or replacement involves, and what to ask before you hire.
Cited cost ranges · No obligation
Signs of an inverter problem
A fault code or red light
The inverter display or status light shows an error. Write down the exact code or message.
No production, panels look fine
The array is intact but nothing is being produced. That points toward the inverter, though only testing can confirm it.
Monitoring offline
The data gateway or Wi-Fi connection may be down even though the inverter is working.
One panel reporting zero
On a microinverter system, a single panel at zero often means that panel's microinverter, not the whole system.
String inverters, microinverters and hybrids
- String inverter. One central unit, usually on an exterior wall or in the garage, that handles the whole array. If it fails, the whole system stops.
- Microinverters. A small unit under each panel. If one fails, usually only that panel stops.
- Hybrid inverter. A unit that also manages battery storage. It adds equipment and questions about the battery's warranty and settings.
Fault codes
Codes and messages differ by manufacturer. The manual, or the manufacturer's support site, explains what a code means in general terms. Share the exact code, the time it first appeared and what the monitoring app shows with the contractor. Do not open the inverter or reset equipment beyond what the manufacturer's instructions for homeowners describe.
Repair or replace?
Inverters are electronics and eventually wear out. Whether a failed unit is repaired or replaced depends on the model, its age, parts and warranty, and the contractor's recommendation. Ask for both options priced where possible. Ask whether a replacement must match your current inverter, and whether it will work with your monitoring and with any battery.
Warranty
Check your paperwork first. The manufacturer's warranty on the inverter, the installer's workmanship warranty and any service plan are separate. A failed inverter may be covered by one of them, and doing the work through the wrong company can complicate a claim. If the system is leased, call the provider before anyone else.
Before you hire
- Get the contractor's license number and look it up at cslb.ca.gov.
- Ask what the diagnostic visit costs and whether it is credited toward the repair.
- Ask for a written estimate that names the equipment, the labor and any permit or inspection.
- Ask what warranty applies to the new equipment and to the labor.
If the problem is the panels or wiring rather than the inverter, see solar panel repair. For roof work that will move the inverter or the array, see solar panel removal for a roof replacement.
Check any contractor, including one you find here
- Ask for the contractor's CSLB license number and look it up at cslb.ca.gov. The CSLB site also explains when a California contractor license is required.
- Get the quote in writing, itemized: the number of panels, removal and storage, new flashing and hardware, reinstall, a production check, the permit, and the schedule.
- Be wary of large deposits or cash-only terms. Ask who is responsible if a panel is damaged during removal and who stands behind roof attachments afterward.
- If the roof and the solar are separate contractors, ask who coordinates the schedule and how long the system will be off.
This site is an independent referral service, not a contractor. Your request goes to an independent local solar contractor, who gives the quote and does the work. How this works
Common questions
Can a solar inverter be repaired?
Sometimes. It depends on the model, the fault, and whether parts and service are available. Many failed inverters are replaced. A contractor can tell you which applies to yours.
How do I know whether it is the inverter or the panels?
You cannot be sure without testing. A fault code, or no output while the panels look intact, points toward the inverter, but a contractor has to test the system to confirm it.
What does my inverter's fault code mean?
It depends on the manufacturer. The manual or the manufacturer's support site lists the codes. Share the exact code with the contractor you call.
Is a solar inverter covered by a warranty?
Many are, but terms differ by manufacturer, model and installer. Find your warranty paperwork and ask the company that sold or installed the system before paying for a repair.
Talk to a local solar pro
Solar on the roof and a job to get done?
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