Fireplace circuit out?

[Fred999]

2012 Montana Mountaineer 362 rql, fire place circuit is out, breaker is ok, acts like there is a GFCI somewhere I can’t find🤔🤔

[JRTJH]

First, welcome to the forum. I hope your time here is enjoyable and rewarding for you.

As for your fireplace circuit, first, unplug the fireplace (behind the unit) and using an extension cord, plug it into a known good outlet to check that it operates properly. If it doesn't, it's in the fireplace. If it does work, then I'd suspect there is a loose wire in one of the "knife wedge connections" on the back of one of the plugs in that circuit. Most of the 120 VAC electrical wiring in plugs is done "daisy chain" from one outlet to the next. Any loose connection will affect all of the outlets connected to that circuit further out (past) the loose connection.

I'd first unplug the fireplace and check for voltage at the plug. If there is none, take the plug out of the wall and check the wires pushed into the connectors. It's a common problem caused by "cheap, easy to install plugs" and made worse by road vibrations caused by towing. If the connections on that plug are OK, then work back to the circuit breaker, following the ROMEX checking each plug in the circuit.

[travelin texans]

GFCI should be near the kitchen or bathroom sink, mine have all been near the bathroom sink.
On my RVs that GFCI shut down most all of the plugs on one side of the RV. Check a few of the other plugs & try the microwave before pulling the fireplace.
On mine also the fireplace plugged in behind a drawer, removing the fireplace was not necessary to try another plug in.

[MarkEHansen]

Another place to look for the GFCI outlet is outside where the refrigerator plugs in to 120v, behind the outside fridge access cover.

[chuckster57]

If the fireplace is on a slide, there is probably a connection that changes the stranded wire back to Romex. I’ve seen those come apart.

[GEBrown]

We had a our air conditioner not have power after we purchased our Cougar in February. The fireplace worked but not the air. We called dealer and they couldn't tell us and a mobile repair couldn't figure it out either. After our sweltering hot camp out we took it straight in to the dealer. 2 days later they called and said it's all working fine now. They called an emergency meeting of all sales people and repair techs to educate them about our issue after the Keystone factory told them what was up.
There is a switch behind the TV that changes the power from the roof air conditioner to the furnace and fireplace heater. When we bought the trailer it was in winter and set for the fireplace and when it got hot we didn't know to throw the switch to use the a/c. It was a 30 amp 2017 cougar trailer. Previous years were 50 amp and now went back to 50 amp so no switch was needed.