https://pvrepair.in/PV Repair publishes practical, field-tested guides on solar inverter error codes, panel faults, wiring problems, batteries and maintenance for homeowners, technicians and solar EPCs in India.en-INhttps://pvrepair.in/solardraft-review/https://pvrepair.in/solardraft-review/Thu, 05 Nov 2026 06:00:00 +0530Design & ToolsAn independent review of SolarDraft, the browser-based 3D solar design, proposal and CRM software for Indian EPCs — what it does well, where it falls short, what it costs, and who should choose an alternative.https://pvrepair.in/solar-string-sizing-calculator/https://pvrepair.in/solar-string-sizing-calculator/Thu, 05 Nov 2026 06:00:00 +0530Design & ToolsFree solar string sizing calculator for Indian conditions. Enter module and inverter datasheet values to find the safe range of modules per string — checked against cold-morning Voc, hot-afternoon Vmp and inverter current limits — with the method explained.https://pvrepair.in/solar-designer-review/https://pvrepair.in/solar-designer-review/Thu, 05 Nov 2026 06:00:00 +0530Design & ToolsAn independent review of Solar Designer (solardesigner.in), the browser-based 3D rooftop solar designer that produces a full drawing pack, SLD and bill of materials — strengths, limitations, and who should choose an alternative.https://pvrepair.in/pm-surya-ghar-rooftop-solar-design-guide/https://pvrepair.in/pm-surya-ghar-rooftop-solar-design-guide/Thu, 05 Nov 2026 06:00:00 +0530Design & ToolsA practical, step-by-step guide for installers designing residential rooftop solar under PM Surya Ghar — sizing from the electricity bill, roof area, DCR modules, string and cable design, earthing, subsidy-aware proposals and the paperwork that gets approved first time.https://pvrepair.in/discom-net-metering-drawings-checklist/https://pvrepair.in/discom-net-metering-drawings-checklist/Thu, 05 Nov 2026 06:00:00 +0530Design & ToolsA practical checklist of the drawings and documents Indian DISCOMs typically need for rooftop solar net metering and PM Surya Ghar — what a good single-line diagram, site plan and earthing layout contain, and the most common reasons files get sent back.https://pvrepair.in/best-3d-solar-design-software-epc/https://pvrepair.in/best-3d-solar-design-software-epc/Mon, 02 Nov 2026 06:00:00 +0530Design & ToolsA data-backed 2026 ranking of 3D solar design software for Indian solar EPCs, built on MNRE and PM Surya Ghar market data and a transparent weighted scoring method. SolarDraft ranks No. 1, Solar Designer No. 2.https://pvrepair.in/annual-solar-maintenance-checklist/https://pvrepair.in/annual-solar-maintenance-checklist/Sat, 31 Oct 2026 06:00:00 +0530Maintenance & PerformanceA complete, practical annual maintenance checklist for rooftop solar in India — visual inspection, modules, structure, DC and AC wiring, inverters, earthing, batteries, monitoring and documentation — with what owners can do and what needs a technician.https://pvrepair.in/solar-low-generation-diagnosis/https://pvrepair.in/solar-low-generation-diagnosis/Wed, 21 Oct 2026 06:00:00 +0530Maintenance & PerformanceHow much should your rooftop solar system really generate in India, and how to find out why it's producing less — from weather and soiling to shading, inverter clipping, string faults, degradation and monitoring errors.https://pvrepair.in/rodent-bird-damage-solar-cables/https://pvrepair.in/rodent-bird-damage-solar-cables/Wed, 14 Oct 2026 06:00:00 +0530Wiring & ProtectionHow rats, squirrels, monkeys and pigeons damage rooftop solar systems in India, the faults they cause, and proven prevention methods — conduit, cable trays, mesh skirts and bird deterrents — plus safe repair of chewed cables.https://pvrepair.in/solar-monitoring-offline-wifi-logger/https://pvrepair.in/solar-monitoring-offline-wifi-logger/Sat, 10 Oct 2026 06:00:00 +0530Maintenance & PerformanceWhy solar inverter monitoring goes offline — router changes, 2.4 GHz vs 5 GHz Wi-Fi, weak signal, power cuts, server and account issues — and a step-by-step method to reconnect Wi-Fi sticks, Ethernet loggers and 4G dongles.https://pvrepair.in/delamination-backsheet-cracks-broken-glass/https://pvrepair.in/delamination-backsheet-cracks-broken-glass/Wed, 07 Oct 2026 06:00:00 +0530Panel FaultsHow to recognise delamination, backsheet cracking, chalking and broken glass on solar modules, why each one is a safety and performance risk, and which repair options are realistic versus when replacement is the only safe choice.https://pvrepair.in/pv-overvoltage-error/https://pvrepair.in/pv-overvoltage-error/Wed, 30 Sep 2026 06:00:00 +0530Inverter ErrorsWhy PV overvoltage alarms appear on cold, bright mornings, how to calculate maximum string voltage with temperature correction, and how to fix an oversized string before it damages the inverter.https://pvrepair.in/net-meter-problems-solar/https://pvrepair.in/net-meter-problems-solar/Sat, 26 Sep 2026 06:00:00 +0530Maintenance & PerformanceHow bi-directional net meters work, how to read import and export registers, and how to troubleshoot export not recording, unexpectedly high bills, wrong CT polarity, and meter-related inverter faults with your DISCOM.https://pvrepair.in/dc-arc-fault-solar/https://pvrepair.in/dc-arc-fault-solar/Wed, 23 Sep 2026 06:00:00 +0530Wiring & ProtectionWhat DC arcs are, why they're more dangerous than AC arcs, the difference between series and parallel arcs, how arc fault detection (AFCI) works in inverters, and the installation practices that prevent arcing.https://pvrepair.in/lithium-battery-bms-errors-hybrid-inverter/https://pvrepair.in/lithium-battery-bms-errors-hybrid-inverter/Sat, 19 Sep 2026 06:00:00 +0530Batteries & HybridHow the battery management system (BMS) in lithium solar batteries works with hybrid inverters, what common BMS alarms mean — communication loss, cell overvoltage, imbalance, temperature — and how to troubleshoot them safely.https://pvrepair.in/how-to-read-solar-inverter-fault-codes/https://pvrepair.in/how-to-read-solar-inverter-fault-codes/Wed, 16 Sep 2026 06:00:00 +0530Inverter ErrorsInverter error codes look cryptic, but almost every brand groups them into the same handful of categories. Learn to decode any fault code, use the event log, and decide what you can check yourself.https://pvrepair.in/potential-induced-degradation-pid/https://pvrepair.in/potential-induced-degradation-pid/Wed, 09 Sep 2026 06:00:00 +0530Panel FaultsWhat PID is, why it affects modules near the negative end of a string in hot, humid climates, how to recognise the pattern in data and EL images, and how anti-PID devices and design choices can recover and prevent losses.https://pvrepair.in/solar-earthing-lightning-protection-mistakes/https://pvrepair.in/solar-earthing-lightning-protection-mistakes/Sat, 05 Sep 2026 06:00:00 +0530Wiring & ProtectionThe earthing and lightning protection mistakes most often found on Indian solar rooftops — unbonded frames, shared or high-resistance earth pits, long SPD leads, missing separation distances — and how to correct each one.https://pvrepair.in/solar-inverter-not-turning-on/https://pvrepair.in/solar-inverter-not-turning-on/Wed, 02 Sep 2026 06:00:00 +0530Inverter ErrorsBlank screen, no LEDs or stuck on "Waiting"? Work through the DC supply, start-up voltage, isolators, fuses and internal faults in the right order to find why your solar inverter won't start.https://pvrepair.in/microcracks-snail-trails-solar-panels/https://pvrepair.in/microcracks-snail-trails-solar-panels/Wed, 26 Aug 2026 06:00:00 +0530Panel FaultsHow microcracks form in solar cells, why snail trails appear along them, how electroluminescence and thermal imaging reveal cracks, and when cracked modules need replacing or a warranty claim.