How to repair the inverter DC bus fault
· Check whether the bus connection bar is loose or has signs of ablation. If so, tighten the connection bolts and clean the ablated parts or replace the connection bar.
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As DC power is constant, the heat builds up and will cause oxidation, causing more resistance. Eventually, the heat builds up to a point where it melts the plastic surrounding the metal connector.
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Connect the two (2) plugs of the Compressor cable harness into corresponding sockets of the DC Bus Test Harness. Refer to Figure 6 – Closed-Top Soft Start Connections and Figure 7 – DC Bus Test
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Cause of damaged DC connector
In the occasion of damaged MC4 connector(s), it is almost always caused by one of two reasons: 1. Incompatible connector types have been used together. 2. Improper crimping of the corresponding
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