Siemens
Intermittent Supply or Communication Dropout
Intermittent charging: sessions start but stop randomly without any error code on the Siemens charger.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Loose line or neutral terminal inside charger, Marginal contact in Type 2 connector pins, Overly sensitive RCD upstream causing brief trips, EMI from nearby heavy equipment affecting control pilot
How to Fix / Troubleshooting
Safety first: Random interruptions can indicate a developing fault; do not ignore repeated events.
- Check event logs: If your Siemens model supports logging, review logs via app or web interface for hidden fault codes or patterns.
- Inspect terminals: With power OFF, tighten all supply and internal power terminals to specified torque.
- Examine connector: Look for signs of arcing or discoloration on the Type 2 pins. Replace the cable if wear is evident.
- Isolate from other loads: Temporarily avoid using large inductive loads (welders, compressors) on the same circuit and observe if stability improves.
If intermittent stops continue and logs show no clear cause, a detailed diagnostic by a Siemens technician is recommended.
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Repair Difficulty
Medium
3/5
Required Part
Input Terminal Block / Tethered Cable
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