Today's Message Index:
----------------------
0. 09:36 AM - Just A Few Days Left... (Matt Dralle)
1. 04:05 PM - volts dropped from 14.4 to 1 (Alan Mekler MD)
2. 04:21 PM - Re: volts dropped from 14.4 to 1 (Kelly McMullen)
3. 04:39 PM - Re: volts dropped from 14.4 to 1 (Jesse Saint)
4. 04:39 PM - Re: volts dropped from 14.4 to 1 (Alan Mekler MD)
5. 04:49 PM - Re: volts dropped from 14.4 to 1 (Alan Mekler MD)
6. 05:02 PM - Re: volts dropped from 14.4 to 1 (Tim Farrell)
7. 05:05 PM - Re: volts dropped from 14.4 to 1 (Jesse Saint)
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| Subject: | Just A Few Days Left... |
Dear Listers,
There are just a few days left for this year's List Fund Raiser. If you've been
putting off making a Contribution until the last minute, well, this is it!
The last minute, that is... :-) There are some GREAT new gift selections to choose
from this year. I personally want at least three of them! There's probably
something you can't live without too! And, best of all it supports your
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and the *only* means of keeping these Lists running is through your Contributions
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Or, drop a personal check in the mail to:
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Thank you!
Matt Dralle
Matronics Email List Administrator
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| Subject: | volts dropped from 14.4 to 1 |
I have AFS 4500 in my RV10.
Today I took a short 30 min local flight. Taxing in I got a check volts
audio alert. The volts suddenly dropped from the usual 14.4 to basically
zero. See below in the upper graph in yellow (volts ) at 29 minutes. If
the alternator quit I should read the battery voltage not 0.
Any ideas on what to check?
Alan
N668G 300 hrs
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| Subject: | Re: volts dropped from 14.4 to 1 |
Probably a failure at the battery ground, or master relay solenoid.
You are right that alternator failure would not cause you to go below
battery volts.
Do you have battery backup on your EFIS or did it also quit at that point?
On 11/23/2014 5:02 PM, Alan Mekler MD wrote:
> I have AFS 4500 in my RV10.
> Today I took a short 30 min local flight. Taxing in I got a check
> volts audio alert. The volts suddenly dropped from the usual 14.4 to
> basically zero. See below in the upper graph in yellow (volts ) at 29
> minutes. If the alternator quit I should read the battery voltage not 0.
> Any ideas on what to check?
> Alan
> N668G 300 hrs
>
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| Subject: | Re: volts dropped from 14.4 to 1 |
It could be the breaker/circuit that supplies the voltage sensing has popped. I'm
not sure on that unit if it is the power supply line to the EFIS or if it is
a separate voltage only line, in which case that wire could be broken or could
have been cut or shorted to ground.
Jesse Saint
I-TEC, Inc.
jesse@itecusa.org
www.itecusa.org
www.mavericklsa.com
C: 352-427-0285
O: 352-465-4545
F: 815-377-3694
Sent from my iPhone
> On Nov 23, 2014, at 7:02 PM, Alan Mekler MD <amekler@metrocast.net> wrote:
>
> I have AFS 4500 in my RV10.
> Today I took a short 30 min local flight. Taxing in I got a check volts audio
alert. The volts suddenly dropped from the usual 14.4 to basically zero. See
below in the upper graph in yellow (volts ) at 29 minutes. If the alternator
quit I should read the battery voltage not 0.
> Any ideas on what to check?
> Alan
> N668G 300 hrs<Screen Shot 2014-11-23 at 5.19.13 PM.png>
>
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| Subject: | Re: volts dropped from 14.4 to 1 |
Kelly,
I noticed no changes in the EFIS. They have backup battery. It was a sudden failure
as you can see.
Alan
> On Nov 23, 2014, at 7:17 PM, Kelly McMullen <kellym@aviating.com> wrote:
>
>
> Probably a failure at the battery ground, or master relay solenoid.
> You are right that alternator failure would not cause you to go below battery
volts.
> Do you have battery backup on your EFIS or did it also quit at that point?
> On 11/23/2014 5:02 PM, Alan Mekler MD wrote:
>> I have AFS 4500 in my RV10.
>> Today I took a short 30 min local flight. Taxing in I got a check volts audio
alert. The volts suddenly dropped from the usual 14.4 to basically zero. See
below in the upper graph in yellow (volts ) at 29 minutes. If the alternator
quit I should read the battery voltage not 0.
>> Any ideas on what to check?
>> Alan
>> N668G 300 hrs
>>
>
>
>
>
>
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| Subject: | Re: volts dropped from 14.4 to 1 |
Jesse,
Ill check with Rob at AFS.
Alan
> On Nov 23, 2014, at 7:33 PM, Jesse Saint <jesse@saintaviation.com> wrote:
>
>
> It could be the breaker/circuit that supplies the voltage sensing has popped.
I'm not sure on that unit if it is the power supply line to the EFIS or if it
is a separate voltage only line, in which case that wire could be broken or could
have been cut or shorted to ground.
>
> Jesse Saint
> I-TEC, Inc.
> jesse@itecusa.org
> www.itecusa.org
> www.mavericklsa.com
> C: 352-427-0285
> O: 352-465-4545
> F: 815-377-3694
>
> Sent from my iPhone
>
>> On Nov 23, 2014, at 7:02 PM, Alan Mekler MD <amekler@metrocast.net> wrote:
>>
>> I have AFS 4500 in my RV10.
>> Today I took a short 30 min local flight. Taxing in I got a check volts audio
alert. The volts suddenly dropped from the usual 14.4 to basically zero. See
below in the upper graph in yellow (volts ) at 29 minutes. If the alternator
quit I should read the battery voltage not 0.
>> Any ideas on what to check?
>> Alan
>> N668G 300 hrs<Screen Shot 2014-11-23 at 5.19.13 PM.png>
>>
>
>
>
>
>
Message 6
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| Subject: | Re: volts dropped from 14.4 to 1 |
I just peeked at the wiring diagrams.
eFIs Expansion cable Pin 13 is labels as Volts2, but I don't see a volts1 anywhere.
There are two power inputs into the main connector. It is possible that one
of them monitors voltage and one doesn't. Possibly one of the came loose. Call
advanced and they'll have the answer quickly.
Sent from my iPhone
> On Nov 23, 2014, at 4:02 PM, Alan Mekler MD <amekler@metrocast.net> wrote:
>
> I have AFS 4500 in my RV10.
> Today I took a short 30 min local flight. Taxing in I got a check volts audio
alert. The volts suddenly dropped from the usual 14.4 to basically zero. See
below in the upper graph in yellow (volts ) at 29 minutes. If the alternator
quit I should read the battery voltage not 0.
> Any ideas on what to check?
> Alan
> N668G 300 hrs<Screen Shot 2014-11-23 at 5.19.13 PM.png>
>
Message 7
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| Subject: | Re: volts dropped from 14.4 to 1 |
It could be the breaker/circuit that supplies the voltage sensing has popped. I'm
not sure on that unit if it is the power supply line to the EFIS or if it is
a separate voltage only line, in which case that wire could be broken or could
have been cut or shorted to ground.
Jesse Saint
I-TEC, Inc.
jesse@itecusa.org
www.itecusa.org
www.mavericklsa.com
C: 352-427-0285
O: 352-465-4545
F: 815-377-3694
Sent from my iPhone
> On Nov 23, 2014, at 7:02 PM, Alan Mekler MD <amekler@metrocast.net> wrote:
>
> I have AFS 4500 in my RV10.
> Today I took a short 30 min local flight. Taxing in I got a check volts audio
alert. The volts suddenly dropped from the usual 14.4 to basically zero. See
below in the upper graph in yellow (volts ) at 29 minutes. If the alternator
quit I should read the battery voltage not 0.
> Any ideas on what to check?
> Alan
> N668G 300 hrs<Screen Shot 2014-11-23 at 5.19.13 PM.png>
>
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