Huawei Error Codes
11 diagnostic articles for Huawei inverters — verified against manufacturer documentation.
Huawei Inverter Alarm 2069 — Battery Reverse Connection Explained
Alarm 2069 on a Huawei SUN2000 means the inverter has detected that the battery…
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Huawei Inverter Alarms 2036 and 2037 When Grid Frequency Trips
Huawei alarm 2036 (grid overfrequency) and 2037 (grid underfrequency) mean the actual grid frequency…
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Huawei Inverter Alarm 2068 — Battery Abnormal and How to Clear It
Alarm 2068 on your Huawei SUN2000 means there is a problem with the connected…
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Huawei Inverter Alarm 2070 — Active Islanding Detection Explained
Alarm 2070 is Huawei's “Active Islanding” alarm — a Major-severity alarm meaning your SUN2000…
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Huawei Inverter AFCI 3003 — When the Arc-Fault Alarm Trips
Your Huawei SUN2000 has detected an electric arc somewhere in the DC wiring between…
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Huawei Inverter Alarm 2063 — Overtemperature and How to Respond
Alarm 2063 means the inverter cabinet has gotten too hot. Huawei lists three possible…
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Huawei Inverter Alarm 2035 — What Causes Unbalanced Grid Voltage?
Alarm 2035 means the difference between your three grid phase voltages has exceeded the…
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Huawei Inverter Alarm 2034 — Grid Overvoltage and HVRT Explained
Alarm 2034 means the grid voltage rose above the upper threshold — or stayed…
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Huawei Inverter Alarm 2051 — Abnormal Residual Current Explained
Alarm 2051 means your Huawei SUN2000 detected abnormal residual current — small amounts of…
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Huawei Inverter Alarm 2061 — Why Your Grounding Alarm Tripped
Alarm 2061 means your Huawei SUN2000 found a problem with its grounding — typically…
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