No display message, but system not operating correctly — Basic checks needed

Was bedeutet No display message but operational interference ?

If the system is not functioning as expected but no specific error code or message appears on the display, several basic checks should be performed.

• Main power supply issues
• Tripped circuit breakers or fuses
• Incorrect switch positions

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1. 1

   Check the position of the main switch (SF1).

2. 2

   Verify the status of the group and main fuses for the property.

3. 3

   Inspect the miniature circuit breaker for the SMO 20 (FC1).

4. 4

   Check the property's earth circuit breaker.

5. 5

   Test the installation's residual current device (RCD).