Unexpected reset

On a regular bases the VM201 resets. This happens at least every day or 2 days. In the display the following text is presented for a few seconds “Bootloader reset”.
After the reset all relais are switched off.
I use firmware build 1315

How can I solve this problem?

Are you sure the VM201 does not lose power?

The unit can only go into ‘bootloader’-mode if a certain protocol is sent to the unit.
Did you try to update the firmware?