What causes grid undervoltage on Huawei Inverter?
- JJacob SmithAug 26, 2025
A grid undervoltage error on your Huawei Inverter means the power grid voltage is too low, or the low voltage duration exceeds the LVRT specified value. Here's how to handle it: 1. If it's occasional, it might be a temporary grid issue; the inverter should recover automatically. 2. If it persists, check if the grid voltage is within range and contact the local power operator if it's not. If it is, you can modify the grid undervoltage protection threshold via the app, SmartLogger, or NMS, with the power operator's consent. 3. If it continues, inspect the AC circuit breaker and AC output power cable.