Solar system maintenance
Maintenance is mostly looking, comparing, and knowing when to stop. It is not a weekend of opening covers. Generation that quietly falls is the usual clue.
A practical routine
Generation
Note the inverter's daily energy on a sunny day and on a dull day. A sudden drop on a clear day is more useful than a single number with no history.
Visual check from a safe place
Look for cracked glass, a new shadow from a tank or a neighbour's floor, slipped modules, and cables hanging free. Do not climb an unsafe edge to get a closer look.
Cables and connectors
From the ground or a safe walkway, look for scorched connectors, chewed insulation, and joints sitting in water.
Structure
Rust at cut ends, loose clamps, and a terrace stain under a bolt are the items to photograph and report.
Protection devices
A breaker that is off, a surge device flag that has changed colour, or an earth link that is disconnected needs a qualified person. Do not reset a repeated trip by holding the breaker in.
How often
Dusty weeks in central India may need the cleaning guide more often than a clean coastal roof. A visual look once a month, and a more careful visit after a storm or after other people have worked on the roof, is a sensible household rhythm. It is not a statutory interval.
The inverter manual may ask for a service interval. Follow that manual. This page does not replace it.
Warning signs
Inverter dark on a sunny afternoon
It may be a grid outage, a trip, or a fault. Check whether the neighbourhood has power before assuming the solar has failed. Do not open the cover.
Burning smell or brown connector
Isolate only if you have been shown the safe isolator and you can reach it without climbing. Otherwise leave it and call.
Bill suddenly unchanged after months of credit
The meter arrangement or the export permission may have stalled. That is a utility question as well as a technical one.
Safety
Do not open the inverter, the DC board, or a connector while the sun is on the modules. Do not wash and inspect electrics at the same time. Height work needs a stable way onto the roof, not a chair.
Where to read further
Maintenance questions
How often should the system be serviced?
Follow the inverter manual and look monthly for obvious damage. There is no single legal interval on this page.
Can I tighten clamps myself?
Only if you can do it from a safe place without unloading a module or opening a connector. Otherwise it is a service visit.
The generation is lower in June than in March. Is it broken?
Not by itself. Cloud, heat, and a different sun path change the month. Compare a clear day with an earlier clear day before assuming a fault.
Related guides
- Solar panel technologyCells, module types, efficiency, heat, degradation, and why DCR matters for the central scheme.
- Solar inverter guideThe inverter turns panel current into household current and decides what happens when the grid fails.
- Solar structure and mountingThe structure holds the modules to the roof. Its size is an engineering result, not a catalogue guess.
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