R alternator fail

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muttsy
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R alternator fail

Post by muttsy »

Shows right alternator fail even though it chargers fine switch left off and it takes over maybe charges a little less when both on
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Re: R alternator fail

Post by CFIDave »

The DA42 has automatic alternator load balancing. So if your right alternator failed, the left engine alternator automatically starts powering everything without any action required on the part of the pilot.

I actually had this happen to me once in my DA42-VI on an IFR flight from Sacramento to San Diego. After consulting the AFM and emergency checklist, I realized there was nothing more for me to do, and so continued with the rest of the flight normally. Got the right alternator replaced (plane was still under warranty) while still in California before flying back home to the US east coast.
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muttsy
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Re: R alternator fail

Post by muttsy »

Both alternators are charging if I turn left off right takes over and charges more
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Re: R alternator fail

Post by Karl »

Check Usense connector for loose, damaged of corroded pins and sockets.

This wiring diagram shows left Alt but it is the same for right Alt too.

If the sockets are spread like in the picture you can gently squeeze them with small pliers.
Attachments
Alt connector.png
Alt connector 2.png
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muttsy
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Re: R alternator fail

Post by muttsy »

Thanks wil try
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Re: R alternator fail

Post by muttsy »

would this diagram be for a 2006 DA42 that is what I am working on
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Re: R alternator fail

Post by Karl »

muttsy wrote:would this diagram be for a 2006 DA42 that is what I am working on
Yes I believe it is. DA42 TAE engine.
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