Red123
I fly an earlier version of the DR400. It has a generator.
The low volt warning light comes on at low revs. What it indicates to me is that the plane should never have had a low volt warning light retro-fitted.
It means you (we) have got low volts according to the lamp.
In reality, I know if I've got low volts, because the engine didn't start. After that there's plenty of rotation to keep enough life for a flight.
It probably means that the battery is not in great condition. Diode pack failure relates to an alternator. You presumably have one of those.
I was told that Maintenance need to do a battery capacity check annually (totally drain and full recharge). On a lead acid battery this is the fastest way to kill them that I know. They are supposed to be kept fully topped up.
There are other elements of maintenance that I feel simply contribute to wearing out components. But that's another topic.
Last edited by 300hrWannaB; 1st Oct 2016 at 23:30.
Reason: Extra line.