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Old 04-17-2017, 02:46 AM   #15
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I sent you a PM. What type of RV? Or did I miss that in the thread?
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Old 04-17-2017, 05:39 AM   #16
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I sent you a PM. What type of RV? Or did I miss that in the thread?
Thanks for the PM and offer to help out. The RV is a 2005 Winnebago Journey 32T diesel pusher.

Got home last night and after a 4 hour run the house and engine batteries are fully charged. Plugged into my 20 amp shore power (have not had time to run the 50 amp yet) and everything seems nominal; all recepticals have power, fridge, microwave, AC and lighting all working fine. Checked again this morning and everything seems fine, deployed the Sat system and it is working great. The only thing that makes sense to me right now is an intermittent issue with a component, maybe the EMS or load center. I'll start goung through everything with the multimeter later on today.

Assuming all is good, we are doing a pretty quick turn around and leaving early Thursday for a BBQ party at state park north of Dallas.
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Old 04-17-2017, 06:14 AM   #17
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Originally Posted by Unplanned View Post
Salesman switch is off would be my first guess.
Thanks, never heard of a "salesman switch" and can't find anything about it in my manuals. I do have a switch on my dash that shuts of DC power, it must be on to power DC components and charge the house batteries with shore power.

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Please update the signature area of your profile with info about your rv.
Thanks, I tried & hope it worked. Success, I have a signature!

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Originally Posted by DAN L View Post
Dwfisk,
Here Is a resource for electrical info:
Welcome to Mark's Fulltime RV Resource
Check the 12 v side of life.
Thanks, looks like a very helpful link .

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Originally Posted by grtharris View Post
dwfisk When you get the coach home very systematically note what is working and what is not 12vdc loads like the lights and 110VAC loads like the AC units and microwave.
If you have the 300 watt inverter up front next to the TV it only powers the entertainment stuff and maybe the satellite dish control. If the coach batteries are low it will shut off.
On my list for today. Printed a copy of the electrical diagrams and will be noting status on them as my tally sheet.

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I would start the motorhome and then start the gen set this should give full power to every thing. then bring down your sat. I called Winnebago when we where having problems with our slides and it worked because the alternator will work. They said when entering a new campsite leave the motor on level and put out the slides and let the big alternator do its job. Then shut down. The same when leaving the camp site. If she has trouble starting the coach have her use the switch to mate all three battery. hope this helps
Thanks, the MH started fine but with house batteries dead the gen would not start and the battery interconnect switch didn't help. But when she got home after 4 hours on the big alternator batteries are showing full charge and the gen starts fine. Your info from Winnebago makes perfect sense and will become part of our SOP.
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Old 04-17-2017, 12:39 PM   #18
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Is there a standard procedure for testing the converter/charger output? I have a Parallax 7455 that says it should be putting out 13.6V but where I'm measuring on the unit I'm only seeing 12.5V and that just looks like the house battery voltage? Input 120V is fine.
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Old 04-17-2017, 12:58 PM   #19
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I had this problem once and it turned out that the GFCI outlet in the bathroom sink area had tripped and it was ganged with the outlet that the converter plugs into. so if yours plugs into an outlet, check for power at the outlet.

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Old 04-17-2017, 03:25 PM   #20
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dwfisk, Good place to check the 12VDC voltage is at the battery disconnect relay. On your coach it is behind the panel under the hood on the drivers side. Both sides should read the same if the disconnect is not enabled. When connected to shore power you should read around 13.6V. If you do the converter is ok if not check the converter it is located under the cooktop on the floor. If the voltage is ok there go to the coach batteries and see what you get there.
Just a note the converter power goes through the load sharing relays.
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Old 04-17-2017, 04:22 PM   #21
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Thanks Grant. Been on the phone all afternoon with the folks at Parallax troubleshooting the converter/charger; they have been great to work with and shared a really neat troubleshooting diagram I'll figure out how to share here. Bottom line, we think one possibility is the converter is OK but going into an "over current mode" programmed (but not publicized) into the unit to protect it when current draw exceeds its 55 amp capacity and that keeps it from charging the house batteries properly. Their diagnostic instructions are consistent with the measurements you suggested. In the process of going through their diagnostic tests it looks like I did a hard reset and it might actually be charging now; I'm up from 12.2 V to 12.5 in 4 hours on shore power. Tomorrow I'll be chasing all the battery leads/connections and taking inventory of amperage use on the DC circuits just in case there is a short in the wiring.
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Old 04-17-2017, 04:48 PM   #22
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[QUOTE=dwfisk;3553386]Thanks, never heard of a "salesman switch" and can't find anything about it in my manuals. I do have a switch on my dash that shuts of DC power, it must be on to power DC components and charge the house batteries with shore power.


That's the switch I was referring to. It's called the "salesman switch" because the sales people use it when they are showing the rig to customers. If it is off like you said, the batteries will not charge when on shore power. Many times the sales people forget to turn it off again and the batteries get run flat.
Hope all works out for you.
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Old 04-18-2017, 09:22 AM   #23
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Sorry that I am late on this topic. I have a 2006 Meridian and I experienced the exact same problems after changing our my house and chassis batteries. In my case there were loose connections when they put the new batteries in and I wasn't getting the proper grounding. When I looked myself at the battery compartment I couldn't believe all the connections. After tightening everything up all my problems went away. Hope this helps.
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