Common Solar Panel Faults and What They Mean
Hot spots, micro cracks, snail trails, potential induced degradation and failed bypass diodes explained, with what each one looks like and what we do about it.
6 Sept 2026
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Solar Wiki
Troubleshooting
Common problems, fault codes, and when to call an installer.
2 articles in this section.
Articles in Troubleshooting
Other sections of the wiki
- Getting StartedNew to solar? Start here for the basics.
- Solar PanelsPanel types, sizing, efficiency, and what actually matters.
- InvertersString vs micro, hybrid options, and common failure points.
- BatteriesHome battery storage, chemistries, sizing, and real-world payback.
- UK Rules & DNOsG98/G99, export limits, planning permission, and DNO applications.
- Smart Meters & ExportSMETS1 vs SMETS2, export MPAN, and how payments actually work.
- Tariffs & FiT / SEGFeed-in Tariff legacy, SEG rates, Octopus Flux, Agile, and more.
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