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Old 10-06-2015, 06:04 PM   #1
Junior Member
Holiday Rambler Owners Club
Join Date: Jul 2015
Location: Tobermory, On
Posts: 5
Thumbs up Neptune electrical issue

We have an 09 Neptune 37 PBQ (I believe a sister unit to the Cayman) on our seasonal site with 30amp service. Needless to say, wehave to be careful with our usage or the system begins shedding services. Yesterday we were not careful enough and the system didn't shed quickly enough and we lost 110 power to our outlets with the exception of the kitchen GFI and two receptacles in the bedroom (on the drivers side). As I was using the bathroom GFI when this occurred I thought it was the GFI and attempted to reset it. When it wouldn't reset, I assumed (that is ass u & me) it was faulty and replaced it. When this didn't solve the problem I got out the tester(which should have happened first) and found there was no power on the line. Longer story short, there is power on both legs coming in, all other systems seem to be functioning and the breakers are all good with power coming out. The manual says there could be several resetable relays in the main panel or the battery area. I have not been able to locate any resettable relay and am seeking assistance on locating them. Can anyone out there help indicate exactly where I would find them or if I am on the wrong track and should be looking for a different solution? I left the unit in frustration and am now at home but we are going back on Friday and I hope to be able to solve the problem.
Thanks for any assistance that can be provided.

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Old 10-06-2015, 07:09 PM   #2
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Join Date: Jul 2011
Posts: 1,740
Try resetting the two push in type breakers on the inverter. Should be on the rear most passenger side storage bay. They are white knobs sticking out from the outside facing part of the inverter if they are like my 07 neptune.


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Old 10-06-2015, 08:38 PM   #3
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Location: Tobermory, On
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Thanks for the tip, Chad. Because we weren't using the inverter, I didn't consider it but I will do the reset when we return to the coach. This is our first foray into the world of motorhomes and there certainly are more electronic devices, controls and monitors than we had in any of our fifth wheels!
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Old 10-06-2015, 08:53 PM   #4
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Join Date: Aug 2010
Location: Fuquay Varina, NC
Posts: 268

As Chad has indicated, the inverter circuit breakers are usually the first to pop. I have basically the same motorhome and you'll find that most 120 electrical use is routed through the inverter, with the exception of the A/C, refrigerator, water heater, etc. (items that either are too big for the inverter or have an alternate energy source, such as gas or 12 VDC). The load to/from the inverter is split between the two 20 amp breakers.

Through trial and error, we figured out which plugs and appliances are on which breaker. For instance, when we want to run our ceramic heater, we need to use the plug under the oven... most other plugs are on the other circuit and will blow the breaker. Now, we rarely blow the breaker.

Good luck!
Ron in Fuquay Varina, NC
2009 Monaco Cayman 38 PKQ
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Old 10-07-2015, 06:20 AM   #5
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Join Date: Jul 2015
Location: Tobermory, On
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Thanks Ron. You hit the nail on the head! We had the heater plugged in to the outlet under the dash and it and most of the others are now dead. Lesson learned, we will now use the GFI under the sink as it seems to just have the two outlets by the head of the bed on it. It seems a strange way to divide the load with the majority on the same circuit but then some things about these RV's aren't always logical!
Thanx again
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