This manual is intended for professional technicians who are responsible for installation, operation, maintenance and troubleshooting of inverters, and users who need to check inverter parameters.
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If identically aligned PV modules are connected to input A and input B of the inverter, you can activate the self-learning string-failure detection and/or the substring-failure detection.
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This guide will walk you through diagnosing and resolving common inverter alarms, ensuring your solar system runs smoothly. Whether you''re a homeowner or a commercial operator, understanding these
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About This Document Purpose This document provides common alarm reference for inverters, helping users query and handle alarms.
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The document contains a list of fault and alarm codes associated with various electrical grid and photovoltaic (PV) system components.
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There are legal obligations to have certain steps of the installation of the products carried out by a qualified third-party. Even if there are no mandatory legal obligations, Huawei recommends...
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If no short circuit occurs between phases or between a phase and the ground on the AC side of the inverter, turn on the AC switch, and read the alarm information on the user interface.
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Connecting different brands or models of PV modules under the same MPPT can result in mismatched open-circuit voltages. This may cause higher-voltage strings to backfeed into lower-voltage ones,
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Use a multi-meter to check the voltages between PV+ and earth, PV- and earth of all the PV strings. It should be decreasing from values between 5% and 95% of single PV module Voc.
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Reverse polarity occurs in the string. Check whether the number of PV modules connected in series to this PV string is less than the number of PV modules connected in series to the other PV strings
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