Very disappointing experience with TSUN – support and monitoring
I purchased a TSUN TSOL-MP3000 TITAN microinverter for a small installation with six 500 W solar panels. The main issue is not that the product does not work. After several weeks of exchanges and remote intervention with TSUN, the microinverter is now operating correctly with all six panels. However, my experience with TSUN's technical support and monitoring system has been very disappointing. The issue was initially reported to the seller in early August 2026. After several follow-ups and an escalation directly to TSUN, a support case was eventually opened on 28 August 2026 (CASE202608280002). The troubleshooting process raised several questions that, in my opinion, should have been much clearer before purchasing the product: Firmware management: the end user cannot currently manage firmware updates on the MP3000 G3. TSUN Smart: the information available to the end user is quite limited compared with what I would expect from a product offering panel-level monitoring. Local access and diagnostics: the possibilities and limitations were not clearly documented before purchase. G3-specific limitations: these were not sufficiently clear to me when I purchased the product. The most frustrating issue currently concerns the monitoring. The MP3000 has been producing normally since 12 September, and real-time power data is available in TSUN Smart. However, the daily, monthly, annual and total energy production statistics are still showing 0 kWh. I am also observing at least 1 to 3 drops to exactly 0 W per day, followed by a recovery of production. I have asked TSUN to check the inverter logs to determine whether these events correspond to a grid protection event, an inverter restart, or a communication/data reporting interruption. At the time of writing this review, several of these questions remain unanswered, despite my latest email to TSUN on 17 September. I acknowledge that TSUN eventually managed to get the microinverter working, and I appreciate the technical intervention that made this possible. However, the overall support experience, documentation and monitoring functionality have not met my expectations. TSUN continues to market the MP3000/TITAN product, while its own documentation presents monitoring and production-data capabilities as part of its microinverter ecosystem. If I had to make the purchase decision again today, I would choose another manufacturer, mainly because of my experience with the technical support and the lack of clarity regarding the monitoring capabilities and limitations. I will of course update this review if the situation evolves positively and TSUN addresses the outstanding questions and issues.