Yes 4, the old boxes had 12 led,s.
There are some issues with the boxes Atlet will not repair by my nowledge, there is a minirelais fitted to the board inside the box that gives some problems, you can check that by tapping the top of the main controller with a srewdrivers bottemside while softly lifting.
If the power falls off you know it is the minirelais giving trouble.
Normally there should be a errorcode on the display, you can check the code in the Log, extra info if you push the I on the nummeric pad.
For the Hydraulique Stopped, check the ventilator by connecting the battery, then enter your drivercode (1-2222 i quess for USA),as soon as it starts up the ventilator behind the SaurDanfoss boxes should turn on for a few seconds, if not ventilator broken. You can check signal with voltmeter. if broken change with original part, if not other problems will acure.