Multiple Battery Units Not Syncing: Fix BMS Errors Safely
Multiple battery units not syncing usually means the batteries differ in voltage, state of charge, temperature, current sharing, or communication status. A safe diagnosis separates physical imbalance from CAN or RS485 faults, then checks compatibility, wiring, addresses, firmware, and inverter settings before any battery is paralleled or recharged. Key Facts Battery synchronization has two separate […]
Tax Exempt Solar Ownership Florida: 2026 Guide
Tax exempt solar ownership in Florida means qualifying solar equipment can be purchased without Florida sales and use tax, while qualifying residential solar value is excluded from the home’s property-tax assessment. These protections remain available in 2026, but they are separate from the federal Residential Clean Energy Credit, which ended for expenditures made after December […]
LG Chem RESU Battery Fault Troubleshooting: Safe Recovery
LG Chem RESU battery fault troubleshooting starts with identifying the exact battery model, inverter message, and LED state before any reset. Homeowners can safely check external disconnects, ambient conditions, inverter settings, and recall status, but internal covers, high-voltage terminals, fuses, cell measurements, and forced charging require a qualified battery technician. Key Facts at a Glance […]
Solar System Lost Connection to Grid: What to Do
A solar system lost connection to grid status usually means a grid-tied inverter detected missing or abnormal utility voltage and stopped supplying electricity. A standard grid-tied system without a battery will not power the home during that outage, while a properly designed hybrid system can isolate from the utility and run selected circuits from stored […]
Solar Combiner Box Fuse Blown Replacement: Safe Fix
A solar combiner box fuse blown replacement requires a correctly rated DC photovoltaic fuse, verified isolation, and diagnosis of the original fault. Replace the fuse only with a compatible gPV fuse whose voltage, ampere rating, physical size, interrupt rating, and holder certification match the PV circuit and manufacturer instructions. Key Facts A PV fuse must […]
Inverter Ground Fault Won’t Reset: Safe Diagnostic Steps
An inverter ground fault won’t reset when the inverter still detects unsafe current leakage or inadequate insulation resistance on the PV, AC, battery, or internal circuit. The alarm may result from wet connectors, damaged cable insulation, a failed surge-protection component, or a legitimate sensor fault. Repeated resets cannot repair the underlying condition. Key Facts at […]
Busbar Corrosion on Solar Panels: Causes, Tests, and Costs
Busbar corrosion on solar panels is electrochemical damage to the conductive metallization and interconnects that collect and carry cell current. Moisture, oxygen, contaminants, dissimilar metals, and sometimes acids released by hydrolyzing EVA encapsulant can increase contact resistance, create localized heating, interrupt current paths, and eventually reduce module output or compromise safety. Key Facts at a […]
FranklinWH aGate Error Codes: Safe Fixes and LED Meanings
FranklinWH aGate error codes are diagnostic alerts for the Franklin Home Power system, but FranklinWH does not publish one universal homeowner list that maps every alert to a numbered code. The reliable identification method is to record the exact FranklinWH App message, system state, aPower LED pattern, and timestamp, then match those details to the […]
How to Document Solar Panel Damage Before an Adjuster Visit
To document solar panel damage before an insurance adjuster visit, preserve the scene, record the storm timeline, photograph the PV system from safe locations, export performance data, and assemble ownership and repair records. Submit original files plus an indexed damage inventory, while avoiding roof access, electrical testing, cleaning, or repairs that could destroy evidence. Key […]
Sungrow Inverter Fault Code Troubleshooting: Safe Fixes
Sungrow inverter fault code troubleshooting starts by recording the exact alarm, model, timestamp, and operating conditions before attempting a reset. Grid alarms may clear after utility power returns, while insulation, arc-fault, high-voltage, and internal hardware alarms require electrical testing by a qualified technician because photovoltaic DC circuits can remain hazardous after shutdown. Key Facts at […]