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CBE • Solar Charge Regulator

CBE PRM400

Official technical documentation and workshop diagnostics for PRM400.

Master Troubleshooting & Diagnostics Matrix

Error Code / IndicatorSymptom / MeaningPossible CauseStep-by-Step DIY FixSuggested Actions
Red led
The photovoltaic modules or leisure battery have been wired with reversed polarity
Incorrect wiring polarity of photovoltaic modules or leisure battery
Disconnect the photovoltaic module connection terminals and the battery connection terminal, then correct the wiring polarity.
DIY Safe