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07-02-2018, 09:42 AM
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#1
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Senior Member
Join Date: May 2003
Location: Brooklyn MI
Posts: 376
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Help with Generator
Hello all, during this heat wave I ran my Gen set for a few hours on Sunday as we loading the RV and then drove it 1 hour. During the Hour drive the Generator turned it self off. I had a red flashing light on the control screen in RV. I have a Challenger 2015 37KT. I was able to restart the generator but it would turn off very quickly. After we got into our spot at the park we opened the compartment and pulled the access door off so the unit could cool. Maintenance was done 2 months ago. Any thoughts?
Thanks
KC
__________________
2015 Thor Challenger 37KT
Trav'ler Direct TV dish, Progressive surge protected, Magna Shield covers, RV SnapPad, 5 star, and On the go Water softener.
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07-02-2018, 10:11 AM
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#2
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Senior Member
Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 31,500
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If you didn't get an overheat code from the gen set , I'd suspect fuel level in the tank .
Did you have over 1/3 tank of fuel ?
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99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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07-02-2018, 10:15 AM
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#3
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Senior Member
Join Date: May 2003
Location: Brooklyn MI
Posts: 376
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Quote:
Originally Posted by Skip426
If you didn't get an overheat code from the gen set , I'd suspect fuel level in the tank .
Did you have over 1/3 tank of fuel ?
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3/4 of a tank
kc
__________________
2015 Thor Challenger 37KT
Trav'ler Direct TV dish, Progressive surge protected, Magna Shield covers, RV SnapPad, 5 star, and On the go Water softener.
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07-02-2018, 10:24 AM
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#4
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Senior Member
Join Date: Dec 2009
Location: Out there, somewhere
Posts: 9,941
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Quote:
Originally Posted by KC
Hello all, during this heat wave I ran my Gen set for a few hours on Sunday as we loading the RV and then drove it 1 hour. During the Hour drive the Generator turned it self off. I had a red flashing light on the control screen in RV. I have a Challenger 2015 37KT. I was able to restart the generator but it would turn off very quickly. After we got into our spot at the park we opened the compartment and pulled the access door off so the unit could cool. Maintenance was done 2 months ago. Any thoughts?
Thanks
KC
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KC,
I don't know your model coach. May I ask what type/size/fuel type of gen you you're having issues with?
Scott
__________________
2004 ITASCA HORIZON 36GD, 2011 GMC Sierra 1500 4x4 Toad '20 Honda NC750X DCT
2018 Goldwing Tour DCT Airbag
Retired-29.5 yrs, SDFD, Ham - KI6OND
Me, Karla and the Heidi character, (mini Schnauzer)!
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07-02-2018, 10:29 AM
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#5
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Senior Member
Join Date: May 2003
Location: Brooklyn MI
Posts: 376
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Quote:
Originally Posted by FIRE UP
KC,
I don't know your model coach. May I ask what type/size/fuel type of gen you you're having issues with?
Scott
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Onan 5.5 gas Gen set, mounted in a 2015 Thor Challenger 37KT.
KC
__________________
2015 Thor Challenger 37KT
Trav'ler Direct TV dish, Progressive surge protected, Magna Shield covers, RV SnapPad, 5 star, and On the go Water softener.
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07-02-2018, 03:21 PM
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#6
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Registered User
Join Date: Jul 2018
Posts: 24
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some of the threads/discussions on this subject tend to lean toward a bad 'air flow' to the generator while driving...I'm not sure if it's true, since you would think that the opposite would hold true, but it could be part of the issue.
Side mounted generators might not have the luxury of the air flow we assume they should receive, as front mounted diesel generators do... it could be 'dirty' air!
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07-02-2018, 03:31 PM
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#7
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Senior Member
Join Date: Mar 2017
Location: Sarnialabad, Peoples Republik of Canuckistan
Posts: 2,225
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I believe there's also a thread or two somewhere on one of these forums and the causes of the "in motion" shutdowns was
1) a loose/exposed wire inside the casing that was shorting against the inside of the casing when the vehicle was underway, causing the shutdown.
2) a temperature sensor inside the air intake that was sensing an overheating condition (when the coach was driven in extreme heat) and causing the shutdown on a thermal error.
__________________
2018 (2017 Sprinter Cab Chassis) Navion24V + 2016 Wrangler JKU (sold @ ????) - 2016 Sunstar 26HE (sold @ 4600 miles) - 2002 Roadtrek C190P (sold @ 315,000kms)
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07-02-2018, 05:46 PM
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#8
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Senior Member
Join Date: May 2003
Location: Brooklyn MI
Posts: 376
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Quote:
Originally Posted by Winterbagoal
I believe there's also a thread or two somewhere on one of these forums and the causes of the "in motion" shutdowns was
1) a loose/exposed wire inside the casing that was shorting against the inside of the casing when the vehicle was underway, causing the shutdown.
2) a temperature sensor inside the air intake that was sensing an overheating condition (when the coach was driven in extreme heat) and causing the shutdown on a thermal error.
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I hope so.
kc
__________________
2015 Thor Challenger 37KT
Trav'ler Direct TV dish, Progressive surge protected, Magna Shield covers, RV SnapPad, 5 star, and On the go Water softener.
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07-02-2018, 07:17 PM
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#9
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Senior Member
Monaco Owners Club National RV Owners Club Workhorse Chassis Owner
Join Date: Dec 2013
Location: St. Charles MO
Posts: 4,920
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I like post#7 paragraph 2)
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2002 Monaco Windsor 40PST 2019 Equinox 1.5L, Blue OX Aventa LX tow bar, Roadmaster EZ5 baseplate, SMI Stay-In-Play Duo, TireSafeGuard TPMS
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07-02-2018, 07:35 PM
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#10
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Senior Member
Freightliner Owners Club
Join Date: Aug 2008
Location: Florida Keys
Posts: 2,687
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I had the same problem last year as described in Post 7, item 2.
My Onan has a temperature sensor in the air filter compartment. (silver 'bullet' at the end of a thicker wire). If it stops again, you can pull that sensor out of the plastic housing and hold the end against a piece of ice for a few minutes. If it starts up and runs, that that is your problem.
When its hot out, I leave the sensor out of the air filter compartment so the ambient air can cool it as we drive.
Good luck!
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Tom and Katharine
'07 Winnebago Tour 40TD, 400hp Cummins
'17 Winnebago View 24V, '02 R-Vision B+
RVing for 20 years & 200,000+ miles
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07-02-2018, 07:46 PM
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#11
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Senior Member
Monaco Owners Club National RV Owners Club Workhorse Chassis Owner
Join Date: Dec 2013
Location: St. Charles MO
Posts: 4,920
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That sensor is doing its job. Lots of hot air off the pavement and engine being sucked up in the generator intake.
__________________
2002 Monaco Windsor 40PST 2019 Equinox 1.5L, Blue OX Aventa LX tow bar, Roadmaster EZ5 baseplate, SMI Stay-In-Play Duo, TireSafeGuard TPMS
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07-02-2018, 07:51 PM
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#12
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Senior Member
Thor Owners Club Freightliner Owners Club
Join Date: Feb 2018
Location: Huntsville, AL.
Posts: 249
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There is not a temperature shut down on the 5.5, not really. There is no temp sensor in the intake, there is one in the muffler, meant to determine misfires NOT heat. It is hot, and heat is very likely your issue, what is called heat or hot air recirculation. This is caused by the heat discharge from the generator and possibly chassis engine being sucked into the generator intake. Yes, it can actually be worse while in motion. The usual shut down mechanism is boiling the gas in carb, FC 36. Stick your hand near where the air intake is underneath, should only feel cool air. It you are feeling hot air, need to duct it away. Experiment with cardboard ducts and deflectors, change to steel or aluminum if you find the right design.
Do not take off the generator door and run it. It is part of the pressurized cooling system. Permanent damage can occur., long term. Okay to open generator compartment to give it air, but leave the generator door and panels shut.
Installation manual gives the recirculation test specifics, but you can feel the hot air with your hand or a simple thermometer.
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Huntsville, Alabama
2018 Thor Palazzo 33.2
2009 Jeep Liberty
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07-02-2018, 09:42 PM
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#13
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Senior Member
Join Date: Mar 2017
Location: Zebulon, NC
Posts: 5,211
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Have you retrieved the fault code from the generator?
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Kelly and Jerry Powell with Halo (Lethal White Aussie), Nash the Rat Terrorist, and now Reid, the "Brindle we have no idea puppy"
2020 Grand Design Solitude 390RK-R
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07-03-2018, 09:23 AM
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#14
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Senior Member
Join Date: May 2003
Location: Brooklyn MI
Posts: 376
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Hello all, I did not get the code. I did not think of it but I will if it happens on the drive home.
I only removed the cover once I got to my RV site, No need to run generator as we have 50 amps.
Thanks for all the help!!!
kc
PS. I think its still under warranty, Im taking it in for another issue in two weeks so Ill have the dealer look at it.
__________________
2015 Thor Challenger 37KT
Trav'ler Direct TV dish, Progressive surge protected, Magna Shield covers, RV SnapPad, 5 star, and On the go Water softener.
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