Solar Repair & Maintenance on Long Island

Start at the inverter — is the status light green? Red or off usually means a fault code worth photographing for the diagnostic. Next, check your monitoring app: a "no data" reading often points to a CT clamp or comms board issue (not the panels themselves). Production drops on a sunny day with the inverter showing green typically mean panel-level issues — a dead bypass diode, soiling, or partial shade, all of which thermal imaging can pinpoint.

String inverters average 10–15 years before needing replacement; microinverters (Enphase) carry 25-year warranties. If your system is 10+ years old and underperforming, plan for an inverter replacement — typically $2,500–$4,500 installed for a residential string inverter, less per-unit for microinverter swaps.

Walk the perimeter and look for any visibly cracked or shifted panels, then check your monitoring app — a sudden drop in production after a storm is the clearest tell. Wind events can loosen panel clamps or rooftop standoffs; if your monitoring shows uneven production across the array, a thermal-imaging inspection is the usual next step. Any compromised roof penetration should be re-flashed rather than sealed over.