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Old 02-11-2013, 10:57 PM   #15
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I've run my house batteries down to 10.9 volts and they'll still start the gen set. A little slow but it works.
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Old 02-13-2013, 11:41 AM   #16
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To tony lee

Quote:
Originally Posted by Tony Lee View Post
Inverter or battery issue aside, what is the physical or electrical difference between running the coach on shore power (from the small Honda) via the transfer switch, and running it from the larger on-board generator via the transfer switch.

Aloha Tony,


I agree, why is the honda generator taking loads with no issues and the House Onan shutting down when loaded?


What do you think?

Also, I pulled codes on the Onan and code 31 pops up! I googled it but need more time to diagnose!

P.s. resolved the inverter issue, I will post the resolution later!
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Old 02-13-2013, 11:49 AM   #17
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vandeimen23

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depends on how the gennie is wired. When my chassis batteries were nearly gone, I could tie in the house batteris and start the gennie - but if I let up on the switch too soon, there wasn't enough voltage at whatever the current draw was at the time, and the ECU on the gennie would drop out and shut it off.

A honda doesn't require on-board current to work the engine auxiliaries.

Sounds weird, I know. You'd think that once the gennie is cruzin that it would take care of its own needs, but there are so many system draws, especially with dead batteries in the equation, that it just can't keep up.

I really hope that is the concern, I have charged the house batteries and resolved the inverter load issue.

However the Onan still trips off when under load!

This occurred under the following conditions:

1) Onan running (8pm at night, approx 52 degrees outside)
2) I'm watching voltmeter at batteries and the voltage climbs to 14.2 at the battery banks.... (this is good because converter is obviously charging)
3) then all of a sudden generator "speeds up" and quits.
4) generator will always start after shutdown
5) pulled codes and code is 31!!!!!

So here are my concerns:

Now that the battery issue and inverter issue have been resolved, what is causing the generator to shutdown????
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Old 02-13-2013, 12:00 PM   #18
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half a resolution to break in!

Thanks again guys for all the suggestions it was awesome to know people still care enough to help!!!


3 issues for rv

1) inverter shuts down under load! This has been remedied through taking house batteries out.

a) charged them up with my schumacher charger
b) water level was above plates, however I did add water to the line
c) checked all batteries with hydrometer, passed with flying colors
d) utilized a load tester and batteries passed with flying colors
e) it only took 1 hour of charging to bring it up to snuff

What I have learned is exactly what all you have stated, voltage don't mean a thing! What matters is the load it can take and how it recovers from that load!

2) Onan generator still shuts down under load! This is still an issue

a) I have not yet charged the chassis batteries due to the fact I was
stressing out over the inverter!
b) So maybe the Onan needs the chassis battery fully charged! This will
be tested tonight after work, Darling wife will charge the chassis
batteries today while I work!!!
c) I did pull dtc codes on the Onan and it reads code#31
d) Now, I need advice on how to diagnose Onan concern?
e) Note just a thought: fuel gauge does read just under half, I hope
maybe that is the problem, but highly unlikely due the fact it has
to be at a quarter tank from my understanding!!

Again, thanks everybody for your help thus far, just need more wisdom for the next few steps!


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Old 02-13-2013, 12:01 PM   #19
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any suggestion on companies for replacement glass

Regarding the glass,

Has anyone just put in a single pane glass? I hate how the dual pane fogs up and would rather not deal with that in the future!

many mahalos,

Jack
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Old 02-13-2013, 07:20 PM   #20
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Quote:
Originally Posted by revolution View Post
Aloha Tony,


I agree, why is the honda generator taking loads with no issues and the House Onan shutting down when loaded?


What do you think?

Also, I pulled codes on the Onan and code 31 pops up! I googled it but need more time to diagnose!

P.s. resolved the inverter issue, I will post the resolution later!
If it makes you feel better, my Onan does exactly the same and I'm pretty sure with the same code. Doesn't always do it, but when it does, I just restart it and it usually keeps going. Given up worrying about it because we try to travel to where the weather is temperate so aircon isn't usually needed. Inverter handles the rest of our needs so as long as the Onan sort-of works, Im not going to worry about it too much.

Also has issues with starting in cool weather so guess the glow plug circuit isn't functioning even though the fuse is OK. Don't care because a squirt of ether works every time.

So back to the OP - guess there are two problems, one being what seems to be a common peculiarity of ONANs and the other, large voltage drops (due to clapped-out batteries) causing the inverter to drop out on low voltage. Trouble is that usually happens so fast that the only way to be sure is to use a high-speed data logger - or is as often the way, replace stuff at random until the problem goes away.
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Old 02-22-2013, 05:22 PM   #21
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updating on glass

Terrible help from glass retailers until I found a local company who said no problem, they took the specs and will be building a single pane, to eliminate the double "pain" windows that fog up!

They are suppose to install it soon, that part of the service is what stinks! Always have to wait an extended period to get service.

I will post a update once the glass is in.

Will wait for a little bit to tear into the Genny

Any suggestions, please don't hesitate or throw me a bone with regards to the removal process!

Happy Friday to all
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Old 02-23-2013, 11:10 PM   #22
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If you have original batteries they are likely worn out. But as others have said, see if you can charge them up fully.

When that done get alarm for motor home.
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