Diagnostics, repair of an electric boiler of a budget 380v, do-it-yourself troubleshooting 

Diagnostics, repair of an electric boiler budget 380v, troubleshooting with your own hands, the principle of operation of the electrical circuit of the boiler. boiler from the builder
When repairing and diagnosing, follow the rules of electrical safety, de-energize dangerously high voltage 380v before diagnosing and repairing the opening of the protective cover
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