Chatsworth, CA · 2019 and 2022 · LADWP / LADBS
Three years later, the inverter stopped reporting.
An 8.19 kilowatt DC system on a Chatsworth house, installed in 2019 on LG modules and a single SolarEdge inverter. In autumn 2022 the monitoring went quiet.
Equipment carries a manufacturer warranty, but somebody has to raise the case, get the replacement approved and shipped, and go back and fit it. On this system the manufacturer logged the case as an inverter not producing, and the shipment that came back held both a replacement inverter and a ZigBee communications module.
At a glance
- DC System
- 8.19 kW
- Modules
- 26 × LG NEON 2 Black
- Inverter
- SolarEdge SE7600H-US
- Installed
- 2019
- Case opened
- 27 September 2022
- Approved
- 10 days later
- Replaced
- Inverter + comms module
- Panel upgrade
- Not required
The story
The system went on in 2019: twenty-six LG NEON 2 Black modules and one SolarEdge SE7600H inverter, 8.19 kilowatts DC on a single-family house. The plan set records something worth noting for anyone weighing up a service upgrade — neither a main panel upgrade nor a main breaker downgrade was required on this house.
Three years later the monitoring stopped showing production.
A string inverter is a single point of failure by design. Twenty-six modules feed one box, and when that box stops, the whole array stops. That is the trade for having one piece of electronics on the wall instead of twenty-six on the roof — the failure is total, but it is also in one accessible place at eye level rather than under a module.
We raised the case with the manufacturer, who logged it as an inverter not producing. The replacement was approved under warranty ten days later, and the shipment that arrived held two parts: a replacement SE7600H inverter and a ZigBee communications module. Both went in, and the old inverter went back to the manufacturer under a return label.
The useful part of this one is not dramatic. Equipment carries a warranty, and the warranty is only worth what the process behind it is worth: somebody has to notice, open the case, chase the approval, take delivery and come back out. Three years after the money changed hands is exactly when that gets tested.
How it ran
| March 2019 | Plan set issued — 8.19 kW DC, 26 modules, one inverter |
|---|---|
| 2019 | System installed; no service panel upgrade required |
| 27 September 2022 | Monitoring shows no production; warranty case opened with the manufacturer |
| 7 October 2022 | Replacement approved under warranty |
| 11 October 2022 | Shipment released: replacement inverter and ZigBee communications module |
| October 2022 | Parts fitted; return label requested for the old inverter |
Two visits three years apart: the original installation and the warranty service call.
What we did
- Designed and installed the 8.19 kW system in 2019.
- Established at design that no service panel upgrade or breaker downgrade was needed.
- Opened the manufacturer warranty case when the inverter stopped producing.
- Followed the replacement through approval and shipment.
- Returned to site, fitted the replacement inverter and the communications module, and returned the old inverter to the manufacturer.
System specifications
| DC system | 8.19 kW |
|---|---|
| Modules | 26 × LG NEON 2 Black |
| Inverter | SolarEdge SE7600H-US, single string inverter |
| Service panel | No upgrade and no breaker downgrade required |
| Building | Single-family house, unsprinklered, construction type V-B |
| Battery | None |
| Utility / AHJ | LADWP / LADBS |
| Warranty work | Replacement inverter and ZigBee communications module under manufacturer warranty, 2022 |
Is your project like this one?
- Your system has stopped producing and you do not know who to call.
- Your installer is no longer answering and the equipment is still under warranty.
- You are choosing between one string inverter and one inverter per panel.
- You want to know what happens years after the install, not just during it.
- Your Chatsworth property is served by LADWP, while permits are handled by LADBS.
Cali Energy in Chatsworth
Chatsworth is inside City of Los Angeles boundaries: permits run through LADBS, interconnection through LADWP.
Some of what we do here is not new work at all — it is going back to something we installed years earlier.
This installation is on the Chatsworth projects page alongside the others, and what the work covers is set out on the Chatsworth service area page.
- License and classifications: CSLB #1032379
- Official reference for this process: LADBS — plan review and permitting
Frequently asked questions
What happens when a solar inverter fails?
With a single string inverter the whole array stops, because every module feeds that one box. The equipment carries a manufacturer warranty; the work is opening the case, getting the replacement approved and shipped, fitting it and returning the old unit. On this system the manufacturer approved the replacement ten days after the case was opened, and the shipment held both the inverter and its communications module.
Is a string inverter riskier than microinverters?
It concentrates the risk rather than adding to it. One inverter means one failure stops everything, but it also means one accessible box on a wall instead of twenty-six units under modules on a roof. Microinverters fail individually and the array keeps running; replacing one means going back on the roof.
Do you service systems you installed years ago?
Yes. This one was installed in 2019 and the warranty replacement was handled in 2022. A warranty is only as good as the process behind it — somebody has to open the case, chase the approval and come back out.
Did this house need a service panel upgrade?
No. The plan set records that neither a main panel upgrade nor a main breaker downgrade was required for this system. Whether a house needs one depends on the existing busbar and breaker ratings and the load calculation for that property.
What this would look like on your roof
Every number on this page came off a real job in Chatsworth, CA — not a brochure. Tell us your utility, your roof and what your bill looks like now, and we will model your own version of it before you commit to anything.
Or call +1 (323) 844-7777 · Cali Energy, Northridge · CSLB #1032379 (B, C-10, C-39) — design, permits, install and electrical under one licensed contractor.
Related
This timeline reflects this property and this permitting path. Updated September 2026.