Accessories unplug themselves…

[Galileo]

On a whim I occasionally press the “Battery” button on the see-level display. Usually I see 13 point something. 

Last night, plugged into shore power with all AC accessories working and no error messages, with the furnace fan running, I pressed it and it read “12.3. I thought - seems low, but don’t panic. When the furnace fan shut off, I pressed it again and it had come up to 12.4. Still low, but not knowing what strategy the battery charger uses, I let it go for the moment.

About six in the morning, a memory of this happening previously came to mind. That time I pulled out my Fluke 77 and checked the actual voltage at a few cigarette lighter sockets and they all agreed with the see-level display. I checked the battery charger breaker and it was on. I pulled the cushion off the rear dinette seat and lifted the access panel…

Battery charger unplugged.

Sure enough, when I arose and looked - same thing.

That’s twice for the battery charger.

First season out, the Norcold fridge wouldn’t automatically switch to AC when we arrived at our campground with hookups. It stayed on LP mode. I pulled the outside lower cover and found zero voltage at the AC connection. About the time that Oliver service got back to me, I had found the AC plug under the galley cabinets had come unplugged.

I think that’s when I asked myself “why isn’t this hardwired?” 

Now I’m asking the same about the battery charger…

Only reason I can think of is “Manufacturer’s warranty”.

So - check those plugs!

Anybody address this issue?

[Snackchaser]

Galileo,

Plugs should have a fairly tight fit in the receptacle and they will not easily fall out.  However, we have all run across worn out, or poor quality, receptacles that the plug will not stay in.  When a plug is loose in the receptacle, it means that the electrical connection is also loose!  It’s one of the most common causes of fire.  Loose connections have a high resistance that create heat, and/or arcing.

It’s best to replace the receptacle.  Otherwise, bend the plug prongs outward just a bit to improve the connection and the holding friction.  Hardwiring is okay, but it shouldn't be needed.

Cheers!  Geoff

[Galileo]

I’d lean towards “poor quality” as these are the “new” receptacles & plugs supplied by Oliver and the component manufacturer. 

I don’t think that the familiar 3-prong grounded outlet that we all know and love was intended for use in mobile applications. At least not ones hidden under drawers or access panels for items that aren’t often unplugged. Sure, if you wanna plug your Keurig machine on the countertop on your RV, go for it - but that’s a completely different application.

I agree 105 to 125 volts, I mean percent that loose connections are dangerous. I’d prefer not to resort to bending prongs.

I guess I -could- replace the receptacle under the sink with a new, name-brand, specification grade outlet - but that’s still a halfway solution. I think a more craftsmanlike repair would be to eliminate the receptacle and plug and “hard wire” it in. That’s really how installed - as opposed to portable - appliances should be wired. (Look at the furnace or AC in your home.)

The battery charger is a different story. The outlet it’s plugged into is a snap-in receptacle on the back side of the A/C breaker panel. There’s a 10-12” unsupported run of power cord that looks designed to pull the plug out with jouncing down a bumpy road. 

Anyway - just questioning the rational and wisdom of the power connections on these two items. I guess I’ll have to expect more failures from similar connections that I haven’t experienced yet. As it was, I found two or three 1/4” spade disconnects on the back of the D/C panel that had worked themselves halfway off already.

Luckily, none of these failures have been mission-critical. “Hohenwald, we have a problem……”

[Galileo]

In just a routine look under the aft dinette seat, I discovered the battery charger plug to be halfway unplugged yet again. 

Two thoughts:

1. Add checking this to a periodic maintenance checklist.

2. It’s about time for my fridge to stop working in A/C…

[jd1923]

12 minutes ago, Galileo said:

Add checking this to a periodic maintenance checklist.

I'd say, this is not such a good idea. Go back to your post from last year and review Geoff's suggestion @Snackchaser. Time to fix the issue vs. adding a checklist item.

On 2/26/2025 at 11:46 AM, Galileo said:

the Norcold fridge wouldn’t automatically switch to AC when we arrived at our campground with hookups. It stayed on LP mode.

Not sure re the Norcold fridge controls, but on our Dometic when in LP mode it will stay there by design. When you select "Auto" it will switch to AC if available, or DC when not plugged in.

[Galileo]

1 hour ago, jd1923 said:

I'd say, this is not such a good idea. Go back to your post from last year and review Geoff's suggestion @Snackchaser. Time to fix the issue vs. adding a checklist item.

Not sure re the Norcold fridge controls, but on our Dometic when in LP mode it will stay there by design. When you select "Auto" it will switch to AC if available, or DC when not plugged in.

Point well-taken on the replacing the socket and/or plug - and if this one were old or worn I’d agree. However, since this one hasn’t been subjected to multiple plugging/unplugging cycles - which would cause one to be loose or weak - I doubt replacing it would yield any better results. Short of cutting off the plug and hard-wiring it to the source, replacing it would be unlikely to solve the problem or eliminate the need to check on it periodically. Additionally, though the receptacle the fridge plugs into IS a standard duplex outlet, the one the battery charger plugs into is a special one that that snaps into the back of the A/C breaker box, and probably doesn’t have a higher-quality replacement available. Only cutting off the plug and hard wiring it will truly “fix” the issue. Anything less is just a band aid.

IMHO - having installed items like the battery charger and fridge plug into a household socket is a pretty cheesy way to handle power on a vehicle subject to vibration and shock as part of its everyday mission. Kind of akin to using household Romex on a boat. (Which I’ve seen done - but not by professionals or knowledgeable laymen.)

And correct on the “auto” mode on the Norcold fridge switching to A/C when available. It normally does this. When it stayed in LP mode even with shore power connected is when I went into trouble-shooting mode. The issue was not my failure to understand or select the operating mode I desired.

[jd1923]

1 hour ago, Galileo said:

Point well-taken on the replacing the socket and/or plug

Not replace the switch, but repair the connection so it cannot come off again.

Maybe show a picture of the connections. Is it a 110V plug like the fridge, or what?

Cheesy, yes! OTT is very good with glue and cheese! 🤣

Hardwire? I’d do that in a heartbeat! 😎

 

 

Edited 17 minutes ago by jd1923