Waeco parking air conditioning d - Turns off after 2 max 5 sec

Hello, I have a problem, I have a waeco parking air conditioning installed instead of a sunroof, yesterday there was a problem. After a night where it works flawlessly, I turned off only the remote control to standby mode and not the power button as I always did, I started the engine and went. Standing on pause, I wanted to turn it on, unfortunately, it could not be turned on for about 2 to 5 seconds, sometimes the display shows the word LO or it goes out at all and does not turn on. Equipment as in the attached photo, please help what could happen

Stable power supply?
Water or gas? Because you didn't provide the model.

Unfortunately, I do not know the model of this equipment, but I received it with the car

hello you solved the problem with the LO error?