I do not say that this bad position, I only say that there could be the possibility that the position (not the position) of the batteries is wrong
It is also good to see if the plastic battery box has a can that connects to the negative by the chassis of the heater. A typical fault at least in the junkers is that this sheet does not make good contact. That orbis model has a display? turn on ??
Hello, it has a light, if it is green the battery is fine, in this case it does not turn on, that whole system is still when I have the hot water tap
ok apparently there is a loose connector or cut cable (if we are pessimistic the electronic control was screwed). I recommend you remove the front cover and check each connector and each 1 x 1 cable following each one and gently pulling them to see if there is any cut. No mice nearby? They gnaw wires like you can't imagine.
This is friend was the electronic control, good eye, replace it with a new one and left, thank you very much everyone