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RV Electrical Problems: 12V & 120V Troubleshooting Guide 2024
Electrical Medium 2-6 hours 302 👍 4

RV Electrical Problems: 12V & 120V Troubleshooting Guide 2024

Around $500 in parts later — replaced the main breaker, cleaned all connections, checked the transfer switch — my 2007 Holiday Rambler Admiral SE still won't recognize shore power.

I'm pretty sure 110V is making it to the rig since I can measure it, but somewhere between the plug and my appliances, something's not happy. Energy management panel is dark too. What's the logical troubleshooting order here? I keep hearing about transfer switches and breaker panels but honestly don't know where to start without making things worse! …more
RV DC Electrical System: Expert Guide to 12 Volt Systems
Electrical Medium 30 min read 131 👍

RV DC Electrical System: Expert Guide to 12 Volt Systems

Opened my RV this morning to find the 12V system going haywire — lights dimming randomly, fans slowing down, and the inverter shutting off despite full batteries.

Specifically, I need to understand the fundamentals of RV batteries - different types, proper sizing, charging requirements, and maintenance. I'm also confused about DC wiring best practices, what gauge wire to use for different applications, how to properly route and protect circuits, and where fuses and breakers should go. Voltage monitoring is another area where I'm lost - I see all these battery monitors and don't know what I actually need or how to interpret the readings.

I'm also planning some system upgrades down the road like adding solar or upgrading to lithium batteries, so I'd love to understand how all these components work together and what I need to consider for future modifications. Is there a comprehensive resource that covers all aspects of RV DC electrical systems from batteries and wiring through monitoring and upgrades? …more
How to Upgrade Your RV Converter Charger for Lithium Batteries with Gentle Care
Solar Batteries Medium 2-4 hours 113 👍

How to Upgrade Your RV Converter Charger for Lithium Batteries with Gentle Care

Halfway through planning our three-week cross-country trip next month, I realized my PD4560 60-amp converter/charger won't properly handle the lithium batteries I'm installing. My existing Progressive Dynamics unit obviously isn't designed for LiFePO4 batteries - I can use boost mode to charge them up, but I know that's not ideal for battery longevity.

I just purchased a 30 amp generator and I'm wondering if it will have enough capacity to handle not just my current charger, but potentially a larger lithium-compatible unit. I'm considering upgrading to a 75 or even 90 amp charger to reduce charging times, but I need to make sure my generator can handle the load. I'm trying to figure out the actual AC amp draw of these higher-capacity chargers and whether my 30 amp generator will be sufficient.

What are the best lithium-compatible converter/charger options that would work with my generator setup, and how do I properly size the charger capacity to match my lithium battery bank? …more
RV Shore Power Not Working: Complete Troubleshooting Guide
Electrical Medium 45 minutes 113 👍

RV Shore Power Not Working: Complete Troubleshooting Guide

Plugged into shore power at the campground last night and absolutely nothing happened — no lights, no AC, nothing. Breaker on the pedestal looks fine and my neighbor's rig is running perfectly on the same circuit. Starting to wonder if something fried inside the transfer switch. …more
RV AC Making Loud Humming Noise? Fix Compressor Not Starting
Ac Refrigeration Medium 45 minutes 108 👍

RV AC Making Loud Humming Noise? Fix Compressor Not Starting

Somewhere above my head, there's this loud, relentless humming grinding through the RV whenever I flip on the rooftop AC — compressor won't start but the fan spins fine.

I've been dealing with this for days now and it's driving me crazy - especially with the heat we've been having! The humming is so loud that I'm worried something might be seriously damaged. I really hope this is something I can fix myself rather than having to call out a repair tech. What could be causing a compressor to hum loudly but not start up? …more
RV Awning Won't Extend or Retract: Complete Troubleshooting & Repair Guide
Exterior Medium 45 minutes 106 👍

RV Awning Won't Extend or Retract: Complete Troubleshooting & Repair Guide

This power awning manual says hold the extend button for 3 seconds, but mine's completely dead and won't budge no matter how long I hold it. When I hit the extend button, it moves out maybe 6-8 inches and then immediately retracts on its own. I have to turn the power switch off and back on each time to get even that little bit of movement.

I'm hesitant to keep forcing it since I don't want to burn out the motor or make whatever's wrong even worse. Could this be an electrical issue with low voltage, or maybe the tracks are too dirty? I've also heard about limit switches causing problems but I'm not sure how to check those safely.

What are the most common causes when an awning does this short extend-then-retract cycle? I want to start with the safest troubleshooting steps before calling a repair shop. …more

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Complete RV Solar System Guide 2024: Sizing, Installation & Wiring
Solar Batteries Medium 4-8 hours 98 👍

Complete RV Solar System Guide 2024: Sizing, Installation & Wiring

Turned to YouTube for RV solar advice and now I'm more confused than ever - probably a dumb question, but how do I actually size this thing? Could fellow RV owners share details about their current solar setups?

Please provide insights on:
- Total system watts
- Fixed or portable panels
- Rigid or flexible panel types
- Series or parallel wiring configuration
- Total system amps
- System voltage
- Wire gauge used
- Controller type
- Personal pros and cons of your current setup
- What you might change in a future installation

These details will help establish baseline specifications for a fleet installation project. …more
Why Your RV Trips GFCI at Home But Not Campground: Complete Troubleshooting Guide
Electrical Medium 1-2 hours 97 👍

Why Your RV Trips GFCI at Home But Not Campground: Complete Troubleshooting Guide

Turned on my motorhome at 11 PM and it tripped the home GFCI again — works perfectly at campgrounds but I need this solved before departure.

I've tried different adapters, rewired a busted GFCI inside the rig, even turned off ALL the breakers including the main panel breaker. Still trips my house GFCI every time, whether it's the garage, side of house, or front outlets. What gives? Why would it work everywhere else but trip GFCIs at home? There's gotta be something specific causing this, right? …more
RV Chassis Battery Draining & Dead Outlets - Troubleshooting
Electrical Medium 2-4 hours 94 👍

RV Chassis Battery Draining & Dead Outlets - Troubleshooting

Finally followed the manual's advice to check the converter first when my outlets died, but my RV chassis battery keeps draining even though the converter tests perfectly. here and I'm at my wit's end with my 2018 Winnebago Vista. The chassis battery keeps going completely dead every few days, even when we're plugged into shore power at the campground. I've already replaced the battery twice thinking it was just old, checked all the obvious stuff like dome lights and radio, and even had the alternator tested - everything checks out fine.

What's really driving me crazy is that this just started happening about a month ago out of nowhere. We've been full-timing for three years without any major electrical issues. I'm wondering if there's some parasitic draw I'm missing or if the battery isolator could be acting up? Has anyone else dealt with this nightmare? I'm getting tired of jump-starting this thing every other day and my wife is about ready to sell the rig and get a travel trailer instead! …more
Can You Run an RV Dryer on 30 Amp Shore Power? Complete Guide
Appliances Easy 10 minutes research 93 👍

Can You Run an RV Dryer on 30 Amp Shore Power? Complete Guide

Already dealing with my 2019 Forest River's 4-year-old dryer constantly tripping the breaker — should I repair it or just replace with something more 30-amp friendly? We have a 2024 Tiffin Open Road and I'm not sure if I can use the dryer when we're plugged into a 30 amp hookup at campgrounds.

I've heard mixed things about whether dryers work on 30 amp service or if you need 50 amp. Some people say it depends on the dryer type? I'm honestly not even sure how to tell what voltage our dryer is or what that means for power requirements. Any guidance would be really appreciated! …more
Dead House Batteries on 50 Amp Shore Power: Troubleshooting Guide
Electrical Medium 30-60 min 92 👍

Dead House Batteries on 50 Amp Shore Power: Troubleshooting Guide

Turned on my 2024 Entegra Reatta XL this morning to find the house batteries completely dead again despite being plugged into 50 amp shore power—third time this season and I'm done guessing. New batteries, good connections, power was working fine for days then died completely. Voltmeter shows 12.69V on chassis, 4.7V on house batteries at the BIM.

What's the proper troubleshooting sequence for house batteries not charging on shore power? Need to check converter, breakers, and connections but want to do this systematically. …more
RV 12V Auto Reset Breaker Size Guide: 30A, 40A, 50A Selection
Electrical Easy 30 minutes 91 👍

RV 12V Auto Reset Breaker Size Guide: 30A, 40A, 50A Selection

Opened up my RV this morning to prep for our two-week cross-country trip tomorrow and the electrical system keeps tripping the breaker every time I run basic appliances! My RV's entire 12V system just died completely - no lights, no water pump, nothing. I've checked everything I can think of and I'm pretty sure it's the auto reset breaker that's failed.

I have a WFCO converter/charger setup with dual 6V batteries, but I can't get underneath right now to read what's stamped on the current breaker. I need to order a replacement but I'm not sure what amperage to get. I keep seeing 30A, 40A, and 50A options online but I don't want to guess wrong and either undersize it or waste money.

What's the typical auto reset breaker size for this type of setup? Is there a standard that WFCO usually pairs with dual 6V battery systems? …more
RV Automatic Transfer Switch Dead - AC Power Troubleshooting & Repair
Electrical Hard 2-4 hours 88 👍

RV Automatic Transfer Switch Dead - AC Power Troubleshooting & Repair

Every time I flip the breaker, my 21-year-old coach's automatic transfer switch stays completely dead and I'm stuck with zero AC power. My Automated Engineering Corp ATS (model M10040A with M10041 display) is showing no AC on the LED readout even though shore power is definitely good.

I popped the cover off and confirmed power is getting TO the shore power terminals, but nothing's coming OUT to feed the AC system. Even manually pushed the contacts in and they stayed, but still no juice on the output side. Generator won't make it switch over either - it's like the whole transfer function is dead.

This thing has to be repairable right? Or am I looking at replacing the whole ATS unit? Really hoping someone has dealt with this before because losing AC in an RV is no joke! …more

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Southwire EMS Built-in vs External Surge Protector: Do You Need Both?
General Easy 15 minutes to verify 87 👍

Southwire EMS Built-in vs External Surge Protector: Do You Need Both?

Opened my 2022 Holiday Rambler 38N DP and discovered it's eating through surge protectors way faster than normal, despite having the built-in Southwire system. Dealer says I might not need an external surge protector like a Watchdog since it's already built in.

Does a built-in Southwire surge guard provide the same protection as a standalone EMS unit? Should I still install an external surge protector or is the built-in system sufficient? Want to make sure I have proper protection without buying unnecessary equipment. …more
Surge Guard 40250-RVC vs 40350-RVC Transfer Switch: Complete Comparison Guide
Electrical Medium 30-60 minutes 85 👍

Surge Guard 40250-RVC vs 40350-RVC Transfer Switch: Complete Comparison Guide

This 8-year-old transfer switch is getting sluggish during power transfers — worth repairing or should I just upgrade to a newer Surge Guard model? I currently have a Surge Guard 40250-RVC in my 2013 motorhome, but I'm having trouble finding that exact model for replacement. All I can seem to find available is the 40350-RVC model.

My current unit has started making a buzzing sound when connected to shore power. Everything still seems to work fine, but I've heard this might indicate the contacts are starting to fail. I'd rather replace it before it completely goes out and leaves me without power.

Can anyone tell me if the 40250-RVC and 40350-RVC are interchangeable? And should I be concerned about the buzzing, or is there anything I can check before replacing the whole unit? …more
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