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Hopefully my last post concerning this topic. On Thursday January 5, 2023. On 50 amp shore power I tripped the GFCI receptacle. Microwave still had power. Frig displayed "noco". GFCI was rewired so that the frig receptacle is no longer GFCI protected. Now when the GFCI is tripped both Micro and frig stay "on". The inverter is operating correctly and frig is happy. Thank you to all for your input and advice.

My most recent reply: On Thursday Dec 22, 2022. On 50 amp shore power. Turned frig "off". Turned inverter "on". Inverter went to "standby" mode. Disconnected shore power. Inverter switched from "standby" to "on". Operations all seem good/normal. * ( At this point I really don't remember how the events progressed. I should have left the inverter "on"). I started the generator. * ( If the inverter was left "on" the inverter should have returned to the "standby" mode). I defrosted the freezer sections using a hair dryer on the "high" setting. I shut down the generator. * (Again, if I had left the inverter "on", the inverter should have returned to the "on" mode when the power was disconnected.) The inverter was "on" *(still, I don't know if I turned the inverter "on" or if had been left "on" during these events) and I started the hair dryer on the "high" setting. The GFCI tripped. I was using the same receptacle outlet for the hair dryer as when I was defrosting located above the countertop just left of the frig. I reconnected shore power and reset the GFCI. I will get an Eaton or Hubble Non Tamper Proof 15 amp GFCI receptacle and proceed to research the issues to date. With the frig "on" I will trip the GFCI to see if the frig is on that circuit. Either way I will replace the GFCI. I will probably wait to do this when the electrician is available with his multimeter and other tools. I probably should have waited for assistance, but I wanted to see what would happen. Notice that I did not use any tools or devices. I will post updates when this saga continues. Thank you and please pray for me. I need all the help i can get.

I acknowledge all the posts to date. I am not good with electrical tasks. I have replaced receptacles (including the GFCI a few times), I ran the line for the 30 amp rv outlet that I use at my home from existing wiring in my garage, I replaced the inverter a couple years ago with the same as the original and I have helped and watched others working on electric. I am waiting for help from a neighbor who was an electrician for industry. We both have had other things occupying our time recently. The neighbor has been away all day, but I will contact him when he returns. I plan to give him a tour of the inverter, GFCI, refrigerator outlets and bring him up to speed on all the electric as I know it. I will have him read my post and the responses as well. This morning the 15 amp breaker tripped on the inverter. The outlets were dead. The GFCI did not trip. The refrigerator displayed NOCO. I turned off the frig and reset the breaker. I turned the frig back on and the outlets worked , too. I will update and post the results after addressing these issues. Thanks to all.

2004 Monaco LaPalma with Xantrex Freedom 458 Series Inverter/Charger (2000 watts) modified sine wave. When connected to 30amp shore power and refrigerator "on" and cooling I switched the inverter "on" and the inverter went to "standby" mode. When shore power was disconnected did not go to "on" and frig display was "noco". GFI tripped and was reset with generator running (frig runs fine on generator power). The Norcold refrigerator is now the JC Refrigeration AC Electric residential with a compressor and is powered by the bank of four 6 volt batteries when not connected to shore power or running the generator. There are 2 receptacles in the outside access behind the refrigerator. The top outlet is labeled "inverter" and that is where the icemaker (I removed the icemaker previously) was plugged into. When the unit was Gas Absorption (ac/propane) the refrigerator was plugged into the bottom outlet. Now the frig is plugged into the top outlet (labeled inverter) and works on either shore power or generator. On the road I had to run the generator to power the refrigerator. I am connected to 50 amp shore power at my Florida Resort now and the frig is working fine. I am considering removing the GFI outlet and replacing it with a standard receptacle. The breakers on the inverter are not tripped and I have not found any fuses that are blown in the motorhome. I know that it is difficult to diagnose from a distance, but any and all assistance will be appreciated. Thank you.

I HAVE THE 120V JC REFRIGERATION FRIG (CONVERTED NORCOLD 1200LRIM) AND A TECH TOLD ME THAT SOME OF THE COMPRESSORS MADE THE GFI TRIP AND REQUIRED A HD GFI UNIT. THE CURRENT GFI IS A 15AMP LEVITRON. WHAT HD GFI DID YOU USE ? MY FRIG WILL WORK ON SHORE POWER AND GENERATOR WHEN PLUGGED IN TO THE RECEPTACLE OUTLET OUTSIDE BEHIND THE ACCESS PANEL. I AM CURRENTLY ON THE ROAD, BUT I THINK THE INVERTER STILL POWERS ALL THE OUTLETS EXCEPT THE ONE THE FRIG IS PLUGGED INTO. I WILL TRY AN EXTENTION CORD FROM AN INVERTER OUTLET TO THE FRIG PLUG.

I did reset the breakers. I have power to all the other receptacles.

2004 Lapalma. Background...inverter was "on" using frig while boondocking. GFI tripped and no power. Checking house battery cutoff switch and it fell apart (broken plastic parts). No replacement available so I used a terminal lug from old switch to connect all 3 cables together. Receptacle for frig plug works on shore and generator. Is there a contact, fuse or relay in the line between the inverter ? Where would it be located and what would it look like?

I replaced the IOTA with the LYGHT LPT50BRD ATS. I turned off shore power (30amp) and turned off house battery cutoff switch before making the change and then turned both back on. Everything seemed fine. I turned off the shore power and ran the generator. I ran the ac units one at a time. I shut down the generator and turned the shore power back on. Some background: 2004 Monaco LaPalma. In 2019 I replaced the 2003 XANTREX 81- 2021 inverter with XANTREX 81-2022. In 2020 I replaced the 4 - 6 volt deep cell house batteries. The inverter is in the rear bay and the batteries are in the next bay with only the compartment wall of the bays separating them. I could hear a loud "electrical hum" that seemed to be from the 300 watt Integrated Power System fuse that is mounted on the common bay wall. A 9 amp draw was displayed on the Progressive EMS LCHW50 that is installed between the 50 amp shore power cord and the ATS. Nothing in the coach was on. Normally there is no amp draw except when putting the rear slide in or out as the coach is "stored" at my residence for the summer. I disconnected the shore power. The battery's status indicator dropped from good to fair. I left things that way overnight. The next day the battery's indicator read even weaker. The cable from the inverter to the fuse and going from the fuse was hot. I turned off the house battery cutoff switch (in the bay with the batteries and fuse) and the humming stopped and the cables cooled down to normal after a period of time. I load tested each of the batteries with the cables unhooked. They all tested fine. I have a new fuse, but before I change it I need to find the reason for these issues. I know this is difficult to diagnose from a distance. Any ideas and suggestions are welcomed and appreciated.

What transfer switch replaces 50 amp IOTA ?

Concerning 2004 Monaco LaPalma. Front AC unit does not run when using generator. It works on shore power. Rear AC runs on both generator and on shore power. Suggestions ? Thanks.