Knowledge base
Curated issue→resolution patterns from completed sessions.
inverterground_fault
✓ VerifiedSMA Sunny Boy ground fault — moisture ingress
Ground fault triggered by moisture in DC connectors. Common after heavy rain on roof-mounted systems.
fault codeground faultzero outputmoderate
communicationcomm_loss
✓ VerifiedEnphase gateway comm loss after firmware update
Gateway drops communication after an auto-update. Usually resolved by a hard reset after the update completes.
comm lossfirmware issueintermittent commeasy
stringanomaly
✓ VerifiedString current mismatch — shaded or failed panel
One string producing meaningfully less current than its siblings. Usually a single shaded/failed panel or degraded bypass diode.
low outputintermittent outputmoderate
environmentalsoiling
✓ VerifiedLow output from heavy soiling (bird/leaf)
Concentrated soiling on part of the array causes a current mismatch across strings.
soilinglow outputeasy
inverterclipping
Persistent clipping — undersized inverter or overvoltage
Inverter clipping beyond expected summer peaks. Either the DC:AC ratio is wrong or grid voltage is persistently high.
clippingcurtailmentover voltagemoderate