Help! Electrical issues

[Presitla99]

2019 Classic 30. Plugged into 30 amp shore power. Neither heat pump is working. Breakers not tripped. And... 15 amp GFCI controlling refrigerator outside receptacle and galley trips. Any ideas short of a long trip to the dealer? Thanks.

[JMynes]

I would check the shore power pedestal for proper wiring first.

[66Overlander]

Can't help on the Heat Pumps other than to say they won't work if it's too cold outside (near or below freezing).

Regarding the fridge GFCI, they go bad. We had to replace the one in our 2016 Classic last summer. Got the replacement at Lowe's as we were out of warranty. Saw many reports of them going "bad" and tripping for no known reason on various 2016 Airstreams. Seems they got a bad batch that year. Maybe your case is similar. Of course when the GFCI trips, most receptacles in the trailer don't work either, so that also becomes a hassle.

[GCinSC2]

Two tools come to mind for simple AC circuit testing, the plug in circuit tester that looks for open neutral, ground reversed polarity etc. And the other is a plug in voltage tester. These plug into outlets and are helpful in non harmful testing, meaning no open probes if you're not familiar with checking outlets.

And a great place to start is at the pedestal as recommended, just plug in with an adapter and test away.

[GMFL]

I bet you the pedestal is wired incorrectly. Reverse polarity or open ground, neutral to ground would be common on a 50amp Plug.

[perryg114]

I agree, check for bad ground or loss of neutral or one of the hots. Each hot should read approx 120V to ground and neutral. You should get 240 ish across the two hots. If you don't know what you are doing then get an electrician.



Perry

[ROBERT CROSS]

Our Classic doesn't have one but make sure the 'Bells & Whistle' breaker hasn't tripped...😘

Seriously...hope you find the 'problem', ideally it will turn out to be part of the learning curve. 👍

Sweet Streams

Bob
🇺🇸

[garry]

Outside receptacle may have moisture in it causing GFCI to trip.


I have had to dry mine out using hair dryer on low after bad rain.

[Presitla99]

Thank you all. Oberlander nailed it—the heat pump issue—It was too cold outside. Now that it has warmed they both work. We have had significant rain so I’ll see if Garry is correct that it’s an outside
Moisture issue. Regarding the ground fault.

[uncle_bob]

Hi

One correction - if your 50A trailer is plugged into a 30A feed ..... you will measure zero between the two hots on the 50A circuit. You will measure 120V to ground on either one of them. That should be how things show up in this case.

If your 50A trailer is plugged into a 50A feed ... you will indeed get 240 between the two hots and still get 120V to ground on either one of them.

Bob