no 12volt in coach-only when plugged into tow vehicle

[Lynn608]

Hi all.. hope everyone is safe from Irma. Here is my sad story..

While running from Irma we pulled into a Walmart parking lot to sleep for an hour. Went into our 2016 Forest River MicroLite 25KS travel trailer. No 12 volt power at all.. even tho the battery was up. Jack and jack light worked fine.
Plugged trailer back into tow truck and bingo.. all good 12 volt even fridge. We arrived at camp and plugged into 110 and all was good.. 12 volt system worked fine.

After thinking about it I asked dear hubby to check the converter (bad idea) he flipped the breaker switch to the converter and the whole 12volt system went off and would not come back on. Went and bought a new breaker switch just in case but nothing changed.
We spent the rest of the week plugged into the truck so we could keep the fridge cold and used the main 110 power for all else so as not to drain the truck battery.
So.. what do you think. Why did the battery not run the 12volt system when the truck pigtail would.. and .. we've checked the battery, connections, ground etc and all good. Have we now also killed the converter or is there a reset or something?

Look forward to hearing your thoughts...
Thanks
Lynn

[Ivylog]

A frame is your hitch area.

[Lynn608]

Thanks bikendan for getting back to me.. when you say A-Frame.. is that located inside the fuse box area or somewhere else ... sorry to be so dumb..
Lynn

[Ivylog]

Your battery is bad/shot/needs water or bad connections.

[bikendan]

Probably tripped the resettable circuit breaker that's usually tucked along the A-frame.
It has a tiny black button that you press to reset it.

It's a small gray/silver box with the black button.