What could be in the network that causes the output stabilizers to give a high voltage?

Question

Iron

Good day.
All of a sudden, my Luxeon SDR-1500 stabilizer started flashing an L and cutting out the power. I thought, Khan, covered himself, went and bought a new one, Luxeon LDR-1000. On the new more informative display - it became clear that the output voltage of the stabilizer jumps more than 250, and both stubs behave this way, and therefore they are cut down. I measured it with a multimeter - the scoreboard does not lie. The input voltage is within the permissible limits (160-190, the threshold on both stubs is 140). At the moment of protection operation on the output voltage, there are no jumps at the input voltage. What could be in the network that causes the output stabilizers to give such a high voltage?

Answer 1

It is possible that the stabilizer electronics are buggy due to a violation of the voltage frequency.