Production — actual vs expected (kWh/day)
Inverters (latest day)
| Inverter | Brand | Size | Performance ratio |
|---|---|---|---|
| Inverter 2 | Huawei | 12 kWp | 0% |
| Inverter 1 | Huawei | 12 kWp | 92% |
| Inverter 3 | Huawei | 12 kWp | 92% |
Anomalies
Inverter outage — Inverter 2 shows 0% performance ratio today on a clear, sunny day while peer inverters (1 and 3) both achieved 92% PR under identical conditions. The inverter has been offline for at least 7 consecutive days with zero output, indicating a hard failure rather than a transient fault.
Action: Dispatch a technician to Inverter 2 to inspect for hardware faults, check DC string connectivity, verify AC contactor status, and review inverter error logs. Immediate replacement or repair is warranted given the sustained outage duration. · confidence: high
Inverter outage — Inverter 2 shows 0% performance ratio while identical peer inverters (1 and 3) achieved 92% under the same clear, sunny conditions today. The 7-day trend shows sustained 0% PR, indicating a complete and persistent failure of this inverter unit.
Action: Dispatch technician to Migros Rooftop Zürich to inspect Inverter 2 (Huawei) for hardware failure, DC isolation fault, or AC disconnect status. Check for error codes on the display and verify DC string continuity. · confidence: high