Onan question

dabluzman1

Veteran Expediter
Retired Expediter
Shooting off a flare: . . . _ _ _ . . .

Okay, my dislike of ONAN aside, here is a question.
The Onan screen control panel shows two power lines.
Line 1 and (yep) Line 2.
The AC according to the install manual is connected to Line 1.
In my Flagship series I commented on all the electric plugs we
had about the truck.
Well, three have gone dead. Two remain. ( Fault breaker is pushed on )
Line 1 shows: 121V : 13 A
Line 2 shows: 121V: 0A

Yesterday , Saturday the 10th, I began to experience weird power interruptions.
I had my Pod 3x guitar processor plugged in, which I use to practice while on the road, it has a Class Two Power Supply, Input 120 Volt AC 60 hertz and Output 9V AC 2000mA. I was in the swivel driver seat so I was plugged into the receptacle behind the passenger seat.
A coffee pot was plugged into the plug next to the sink.
There are two separate plugs there, the pot was in the one above the TV antenna plug.

Both units began to flash on and off. My POD would cycle between sign on screen then blank. I thought my power supply was going bad so I unplugged.

Linda began preparing diner. She said that the electric skillet would not come on.
It was plugged into the second input with the coffee pot. The usually blinking 1200 was not blinking on the coffee pot.
We switched to the plug below the TV antenna and the skillet worked but the coffee pots blinking 1200 was going crazy blinking very rapidly and then after a few seconds went blank. Now it will not turn on at all.
I know a dirty power source wreaks havoc on micro processors.
I am thinking my $300 pedal and $15 dollar coffee pot were just executed by this ONAN.
All these items worked without a problem on the Columbia, which also had an ONAN.
All that to ask this, does any one know if there is a reset for Line 2 and if there is, where is it?
I would like to resolve this asap but it may just be another item added to the list for the Dealer to look at.
I will call Bolt on Monday if I cannot resolve it today.

An FYI, were told about the Power Switch that shuts off the power to the condo located next to the drivers seat. It was recommended that if we were stopped for a spell over three days to shut the power off to save batteries.
This switch, in the manual, is also mentioned as a reset.
I turned the generator and inverted off, then switched the Power Switch to off.
Everything went dead. I mean everything, condo, qualcom, ameriscan, truck gauge panel, every thing. I thought only the condo would shut down.
Not really a problem just wasnt what I expected.
Now when I powered back on I still had the problems with our electric plugs.
So I went about my usual Sunday morning of checking the systems on the truck.
Tire pressure, axles, lift gate, cleaned the inside of the box, came in and turned on the Reefer and had it go 5C ( our next runs set point ) and fired up the truck to rebuild air pressure.

Okay, here is where I am going to, my air pressure was low from sitting a couple of days. When I started the truck I began to LOSE air pressure. I reved the motor and still lost pressure, the low air pressure warning light came on.
Okay okay the FYI, I believe when I shut the Power Switch off it affected something with the air pressure. An electrical sensor maybe? (We did hear a release of air when I shut the Power Switch off).
So after losing air pressure while the motor idled, I shut the truck off, and let it sit 5 minutes. I restarted the truck and the air pressure went up to 130 in usual manor. Did sitting those few minutes with the electric back on power up a system that effects the air pressure? Dont know?
Okay thats it, see ya.
 
Last edited:

zorry

Veteran Expediter
I'm the Volvo that loaded with you last Monday afternoon.
You have a nice looking truck.
I'm sure glad I went Volvo.
I just added an Onan on Caffee's and Phil's recommendations.
Please stop the Onan horror stories: you're freakin me.
Good luck making the wedding. I'll pm you about our wedding adventure.
 

TeamCaffee

Administrator
Staff member
Owner/Operator
Bob had a couple of quick thoughts: Check the breakers behind the bench seat on the passenger side of sleeper.

If line one is showing amperage and line two is not then you are only drawing off of line one. He suggested you check each outlet to see which line they pull off of.

We have the 810 ONAN and so far I have not been able to stress it. I use the outlet behind where the TV would be if we had a TV in our truck for the coffee pot. I use the outlet on the other side of the counter for our fan and Vita Mixer. I use the outlet near the floor on the passenger side to charge my computer, charge phones, and to run our vacuum cleaner. Bob added a outlet on the passenger side of the sleeper so I can also charge a phone on that side.
I use a LOT of electricity with my coffee pot, Vita Mix, Vacuum Cleaner, phones, computers, fan, and rice cooker and I have yet to stress the ONAN. I know while I have used much of that electricity the refrigerator has probably came on, I have used the convection/microwave and or the air conditioner has came on and the ONAN just keeps chugging away.

We did have to learn the control panel and to understand how it reads the batteries as it reads consumption not condition of batteries. Once we learned this we have been fine.

We turn the ONAN off while going down the road unless I use the microwave and then once we stop we turn the ONAN back to auto.

We use the cycle beside the drivers side chair once a month to reset everything and have not had any problems.
 

layoutshooter

Veteran Expediter
Retired Expediter
Why do you need the Onan to run the microwave when the big engine is running? Kinda lost me there. Is not your big engine enough? Please explain.
 

cheri1122

Veteran Expediter
Driver
LOS: My APU is a ProHeat, like yours. I keep a voltage meter plugged into the dash when sitting, [tells me when to crank something up, if truck & APU are both off] and it shows that I need to run the truck at high idle [I use the cruise] even with the APU running, while running the microwave, or the voltage gets too low. The readout is corroborated by the one on the inverter, so it's accurate.

Dave: did you not get a user manual for the Onan? [I only have an installation manual, lol, no help] Maybe you can find a users' forum online, with a FAQ - worth a look.
 

layoutshooter

Veteran Expediter
Retired Expediter
LOS: My APU is a ProHeat, like yours. I keep a voltage meter plugged into the dash when sitting, [tells me when to crank something up, if truck & APU are both off] and it shows that I need to run the truck at high idle [I use the cruise] even with the APU running, while running the microwave, or the voltage gets too low. The readout is corroborated by the one on the inverter, so it's accurate.

Dave: did you not get a user manual for the Onan? [I only have an installation manual, lol, no help] Maybe you can find a users' forum online, with a FAQ - worth a look.

What about when running down the road? When sitting still, and running the microwave for short periods I run the reefer and APU. If using it for more than say 5 minutes I use the APU and main engine. When running at highway speeds the main engine alone is more than enough.
 

dabluzman1

Veteran Expediter
Retired Expediter
Hi zorry,
too bad we had to leave. I was looking forward to talking with you.
Like anything, there are pro and con experiences. When running it is a good APU
as others have said.

Hi Linda,
thank you and Bob for the info. We use our ONAN pretty much the same as
you. Our model is the Hybrid, I thought we were told it is no longer available.
I read every page of both the install and owners manuals. While there is reference to
the two lines not a word if one isnt showing activity.
This being a brand new, under warranty truck, I am not going to dig to deep. I dont want
to be the excuse for a non warranty repair bill.
I thought I saw on the schematic a reset inside the power transfer case. If it has to be
unscrewed to get to, that would constitute digging to deep.

Hi Cheri,
yes I did get a install and operators manual. Read and re-read them both. I have schematics and I pretty much understand what they say, locating something is another story.
I did not receive a build diagram showing where everything is at within the walls. I was
hopping for the magic button to make it all better. No such luck.

Hey Joe,
if we are nuking anything for more than a couple of minutes we are advised to run the ONAN.
 

cheri1122

Veteran Expediter
Driver
Los: When running down the road, the microwave works solely as a storage container for the large popcorn bowl - I can't use it for it's intended purpose unless I'm stopped. Heck, I don't even reach in the fridge for a cold drink while moving, and that one I can reach, lol. :p
 

layoutshooter

Veteran Expediter
Retired Expediter
Los: When running down the road, the microwave works solely as a storage container for the large popcorn bowl - I can't use it for it's intended purpose unless I'm stopped. Heck, I don't even reach in the fridge for a cold drink while moving, and that one I can reach, lol. :p

Yeah, I forgot you are not a team. That might have a minor affect on things.
 

TeamCaffee

Administrator
Staff member
Owner/Operator
I do not run the ONAN if I run the microwave less than three minutes. If over three minutes I start the generator and did this also with our Rig Master due to the draw on the alternator.
 

layoutshooter

Veteran Expediter
Retired Expediter
I do not run the ONAN if I run the microwave less than three minutes. If over three minutes I start the generator and did this also with our Rig Master due to the draw on the alternator.


Got it. It is easier for us to run the reefer. Our APU is plumbed into the main truck. Not sure that it is a good idea to run it when main engine is running. We have, just don't like too.
 

davekc

Senior Moderator
Staff member
Fleet Owner
Sounds like several parts. The sleeper cut off switch shouldn't be doing anything with the cab. If so, it is wired to the primary line. Your brakes have electronic modules that likely didn't reset causing that first brake issue, and then worked after another five minute reset.
That is assuming the battery cables and grounds are secure.
If your is like ours, some outlets are direct to the gen and some go to the inverter. One of the ones in the circuit for the gen will have a 110 reset button( on the actual outlet) plus one on the main breaker/fuse panel.
If you have a coffee pot and a guitar stomp or wah-wah pedal that shouldn't make any difference. Most of those stomp boxes are all solid state and draw next to nothing. The coffee pot would be the highest draw but nothing like a microwave or a high speed hair dryer. Bentz/Bolt did have a issue with some of the Magnum panels but they would have to tell you which one.
Also, if you have the deep cell battery option, you have to ensure the solenoid is activating properly so they are charging.
Wiring sure does seem suspect in a few places based on your post.
 

ATeam

Senior Member
Retired Expediter
Why do you need the Onan to run the microwave when the big engine is running? Kinda lost me there. Is not your big engine enough? Please explain.

In our truck, the microwave will not run at all without the generator on. That is by design, the sleeper manufacturer (ARI) explained. Our microwave oven is a convection oven too. When baking bread or otherwise doing convection cooking, the power draw is heavy so the Onan generator supplies the power.

This is one of the very few things we dislike about our truck. If we had it to do over again, or if it bothered us enough to do something about it now, we would have a switch installed such that ordinary microwaving could be done without the generator and when convection cooking is desired the switch could be flipped to supply the needed power from the generator.
 
Last edited:

ATeam

Senior Member
Retired Expediter
I'll be interested to hear what you learn, dabluzman1. It sounds like installation issues to me.
 

ATeam

Senior Member
Retired Expediter
We have the 810 ONAN and so far I have not been able to stress it.

Same with our older-model Onan (Quiet Diesel 7500). Our manual says to load up the generator every now and then as a PM procedure (something to do with clearing buildup out of the exhaust). To do that, we turn everything on; convection microwave, two burner stove top, roof unit AC, vacuum cleaner, head bolt heater, all lights, all fans, computers, etc. You can hear the generator ramp up a notch to handle the load but it does not miss a beat.

Keep in mind that these things are made to power Class A motorhomes that have four AC units on the roof, full kitchens and vast spaces to heat or cool. A tiny sleeper (compared to a motorhome) is no challenge at all for an Onan if it is properly installed and maintained.
 

dabluzman1

Veteran Expediter
Retired Expediter
Sounds like several parts. The sleeper cut off switch shouldn't be doing anything with the cab. If so, it is wired to the primary line. Your brakes have electronic modules that likely didn't reset causing that first brake issue, and then worked after another five minute reset.
That is assuming the battery cables and grounds are secure.
If your is like ours, some outlets are direct to the gen and some go to the inverter. One of the ones in the circuit for the gen will have a 110 reset button( on the actual outlet) plus one on the main breaker/fuse panel.
If you have a coffee pot and a guitar stomp or wah-wah pedal that shouldn't make any difference. Most of those stomp boxes are all solid state and draw next to nothing. The coffee pot would be the highest draw but nothing like a microwave or a high speed hair dryer. Bentz/Bolt did have a issue with some of the Magnum panels but they would have to tell you which one.
Also, if you have the deep cell battery option, you have to ensure the solenoid is activating properly so they are charging.
Wiring sure does seem suspect in a few places based on your post.

Hi Dave, thanx for your input.
Running my pedal was never an issue with the old truck that had an Onan
and I agree with everybody that they are built to handle everything we can
throw at them and more. EXCEPT, as you and Phil mentioned install problems
like a loose wire or miss wiring.
The outlet with the 110 reset is still working.

MORE NEWS AT 11.
 
Top