Troubleshooting

Make sure that:

All cables are connected properly, both on the M-Bus Splitter and on the M-Bus master.
The voltage on M-Bus IN is greater than 23 VDC. If the voltage is lower, disconnect one meter at a time to find the failing meter.
The voltage on M-Bus OUT2 is greater than 26 VDC. If the voltage is not within this range, check the function of the M-Bus master. Connect external 24 VAC power supply when connecting more than one meter. When low voltage is detected on M-Bus IN, all LEDs flashes four times.
The connected M-Bus meters all have unique primary addresses.

Contact the supplier if the error remains.

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