Charger shows E15; internal self-test fails at startup.

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.

Possible Causes

Defective main control PCB, Faulty internal relay or sensor, Incorrect wiring after previous repair, Incompatible replacement module

Safety first: Isolate the charger before inspection.

Review recent changes: If components were recently replaced, verify that wiring matches the Mennekes schematic and that only approved parts were used.
Visual inspection: Look for obvious damage on the main PCB, such as burnt components, cracked solder joints, or foreign objects.
Module substitution: If available, test with a known-good main control PCB to confirm the fault.

Due to the broad nature of self-test failures, component-level repair is typically not recommended; replace the main control PCB.

Professional Required 5/5

Main Control PCB

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