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RV AC Making Loud Humming Noise? Fix Compressor Not Starting
Ac Refrigeration Medium 45 minutes 797 👍

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
Onan 5500 Generator Problems: Complete Repair Guide
Engine Medium 2-6 hours 773 👍 1

Onan 5500 Generator Problems: Complete Repair Guide

Spent three hours testing my 2014 Hurricane's Onan 5500 gen getting 11.8 volts output when every manual says it should be 12+ volts! Here's the weird part - when I disconnect the remote harness, the generator fires right up and purrs like a kitten. But the second I plug that remote connection back in, boom - both the remote start light AND the generator start light come on, and then... nothing. Won't start at all.

The really bizarre symptom is this chattering from the fuel pump when the remote is connected. I can literally feel the fuel line jumping around when I put my hand on it. It's like the pump is having some kind of seizure or something!

I'm guessing this has to be some kind of electrical issue between the control board and the remote system, but I've never seen anything quite like this before. Anyone dealt with this specific combo of symptoms on an Onan 5500? Really hoping there's a known fix because pulling this thing out of the RV again would be a major pain! …more
Dometic 12V Refrigerator Not Cooling on Battery Power - Complete Troubleshooting Guide
Ac Refrigeration Medium 45 minutes 622 👍

Dometic 12V Refrigerator Not Cooling on Battery Power - Complete Troubleshooting Guide

Staring at my Dometic DMC compressor refrigerator that runs perfectly on 12V DC when it's cool but stops cooling completely once temperatures hit 85°F or higher. The unit works perfectly when I'm plugged into shore power at campgrounds - everything stays cold and the freezer compartment keeps items frozen solid. However, when I'm boondocking and running solely on my RV's battery bank, the performance drops significantly. The refrigerator struggles to maintain proper temperatures, and the freezer can't keep things frozen.

I have a relatively new battery setup with what should be adequate capacity for my power needs. The batteries test fine with a multimeter when the refrigerator isn't running, but I'm wondering if there's something I'm missing about power requirements or electrical connections. I've heard that 12V compressor refrigerators can be pretty demanding on battery systems, but I'm not sure what specific issues to look for.

What are the most common causes when a 12V Dometic compressor refrigerator works fine on shore power but fails to cool properly when running on batteries? I want to troubleshoot this systematically before calling in a technician. …more
RV Inverter Guide: Modified vs Pure Sine Wave - Safe Power
Solar Batteries Medium 4-6 hours for inverter replacement 547 👍 1

RV Inverter Guide: Modified vs Pure Sine Wave - Safe Power

My multimeter's out and I'm ready to tackle this RV electrical mess myself — pretty sure the inverter's the culprit but need to know where to start. I have a 2000 Winnebago Ultimate Advantage with four deep cycle house batteries and recently installed a Xantrex 758 inverter to replace my old Freedom 15 unit. The first time I tried using the inverter power while unplugged from shore power, something very strange happened - a hair dryer in the bathroom started running by itself and wouldn't shut off when I tried the switch. I had to unplug it, and the handle was warm. The hair dryer appears to be ruined now.

When I bought the Xantrex 758, I paid around $725 for what I thought was a good unit, but I'm now learning there's a difference between modified sine wave and pure sine wave inverters. I wasn't aware of this distinction when I made the purchase, and it turns out the 758 is a modified sine wave unit. I've since heard that modern electronics, especially things like residential refrigerators, computers, and sensitive electronic components, can be damaged by modified sine wave power.

I'm really concerned about potentially damaging my new residential refrigerator, stereo system, and computer equipment. Should I be worried about using this modified sine wave inverter with modern RV electronics? Is the hair dryer incident a sign that I need to upgrade to a pure sine wave unit, or are there other factors that could have caused this problem? I'm trying to understand if my current setup is putting my expensive electronics at risk. …more
RV Electrical Problems: 12V & 120V Troubleshooting Guide
Electrical Medium 2-6 hours 523 👍 4

RV Electrical Problems: 12V & 120V Troubleshooting Guide

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
Fix RV Low Water Pressure on City Connection: Troubleshooting Pump Assembly
Plumbing Easy 30 minutes 522 👍

Fix RV Low Water Pressure on City Connection: Troubleshooting Pump Assembly

Last week my pressure regulator started reading a solid 40 PSI on city water but my water pump keeps cycling on for 5-6 seconds when everything says it should stay completely off. When I connect to city water, my water pressure regulator shows a solid 40 PSI, which should be plenty, right? But here's the weird part - my water pump keeps kicking on for about 5-6 seconds then shuts off, even though I'm connected to city water and the pump switch is supposed to be off.

The really frustrating thing is that the pressure feels weak throughout the RV, with specifically the bathroom sink and kitchen sink seeming low, though the shower has good pressure. I've already changed out the intake/check valve and don't currently have a filter in the system. I can see the pump running while on city water, which I know is not normal. I noticed the kitchen and bathroom sink screens were plugged - which might explain some pressure issues - but now I'm wondering about the toilet's low pressure. Could there be a screen in the toilet line I'm not seeing?

I've been full-timing for two years and never had this issue before. What should I be checking for? I'm handy enough to do basic repairs but need to know where to focus my troubleshooting efforts. …more

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How to Fix a Squeaking Dometic Fan-Tastic Roof Fan in Your RV
Ac Refrigeration Medium 45 minutes 499 👍

How to Fix a Squeaking Dometic Fan-Tastic Roof Fan in Your RV

Looked up at my Dometic Fan-Tastic roof fan squeaking loudly above my kids' beds—is this dangerous or could something actually break and fall on them? The fan blades aren't hitting the housing, so that's not the issue. What are the most common causes of squeaking in these roof fans? Is this something I can fix myself with basic maintenance, or does it usually require replacing parts like bearings or the motor? …more
How to Reduce RV Interior Noise: Complete Sound Dampening Guide for Motorhomes
General Medium 4-8 hours 482 👍

How to Reduce RV Interior Noise: Complete Sound Dampening Guide for Motorhomes

Despite having a 2021 Coachmen Mirada, looking at my sound meter right now and there's 69 decibels of highway noise blasting through the cabin. My target is to achieve approximately 65 decibels for better communication with passengers.

I need a systematic approach to interior noise reduction. What are the most effective sound dampening materials and techniques for motorhomes? Specifically, I'm looking for solutions that address engine noise transmission, road noise, and any rattling components that contribute to the overall sound level.

What realistic noise reduction can I expect from proper sound deadening implementation, and what are the key areas to focus on for maximum impact? …more
Michelin RV Tire Problems: Complete Guide & Solutions
Engine Medium varies 450 👍 1

Michelin RV Tire Problems: Complete Guide & Solutions

Standing in my driveway planning to tackle these serious handling issues with my new Michelin Agilis HD Z 245/70R19.5 tires on my 2018 Winnebago Vista LX 27N this Saturday — what should I check first? The RV now has 25k miles, and since switching from Goodyear tires, I'm experiencing terrible tail wag - especially when towing my 2024 Toyota Tacoma and in windy conditions.

I've tried multiple tire pressures (82 psi from door sticker, 110 psi from installer, up to 100 psi) but nothing resolves the side-to-side movement. I have several stability modifications installed (Rear Trac Bar, Aux Roadmaster Rear Swaybar, Front Roadmaster Swaybar, Koni FSD shocks), which previously helped with handling.

The movement feels like the towed truck is actually pushing the RV's rear side-to-side, making driving extremely uncomfortable. I'm within Michelin's 60-day/2500-mile buy-back period and want to understand why these tires are performing so differently from my previous set.

Could experienced RV owners help me diagnose what might be causing these handling problems? …more
Protect Your RV Alternator When Charging Lithium
Electrical Medium 2-4 hours 410 👍

Protect Your RV Alternator When Charging Lithium

Tried everything my neighbor did to charge his LiFePO4 batteries but mine keeps frying the alternator while his works flawlessly — what's different? I want to install a temperature sensing device that can interrupt charging by opening the solenoid between chassis and house charging systems if the alternator gets too hot. I'm looking to spec out components and understand the installation process, and I'm open to hearing why this might not be a good approach. My goal is preventing alternator overheating when these lithium batteries draw high current compared to my old flooded or AGM batteries. I'm looking for technical feedback and am totally open to critique. …more
Atwood GC10A-4E Replacement: Best Tankless RV Heaters
Propane Hard 6-8 hours 400 👍

Atwood GC10A-4E Replacement: Best Tankless RV Heaters

Halfway through draining my Atwood GC10A-4E's supposed 10-gallon capacity, the water's already running cold but my gauge shows I've only pulled maybe 6 gallons. Are there any dual-fuel tankless units that would work as a replacement? I know there's no plug-and-play option, but what are the best tankless water heaters that offer both gas and electric operation for RVs? …more
Can You Run an RV Dryer on 30 Amp Shore Power? Complete Guide
Appliances Easy 10 minutes research 389 👍

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
RV 12V Lights Dimming: Complete Troubleshooting Guide
Electrical Easy 30 minutes 375 👍

RV 12V Lights Dimming: Complete Troubleshooting Guide

My neighbor insists it's the converter, the RV dealer swears it's bad wiring, and every YouTube video claims it's a dying battery—but my 12V ceiling lights keep dimming! One evening they're blazing bright like a casino, the next morning they're giving off all the enthusiasm of a sleepy firefly.

I've already checked my batteries, and they seem to be charging fine and in good shape. The converter is still humming and its fan is running normally. I'm pretty sure this isn't some fancy mood lighting feature I accidentally activated (though knowing my tech skills, anything's possible). The dimming seems totally random - sometimes they're fine, sometimes they look like they're on their last legs.

I've got a basic multimeter that I pretend to know how to use, but I'm not sure where to even start poking around. As a bonus weirdness, some of my under-cabinet light switches and the wall switch for the ceiling lights are getting really hot. Anyone know what typically causes this whole disco light show situation with 12V lighting systems? …more

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RV Battery Draining Overnight? Find & Fix Parasitic Drain
Solar Batteries Medium 2-4 hours 365 👍

RV Battery Draining Overnight? Find & Fix Parasitic Drain

The day after I installed that new solar charge controller last month, my RV batteries started mysteriously draining from fully charged to completely dead overnight. I've already confirmed that all visible lights, fans, and appliances are turned off, and I've switched off the main interior power, but something is still drawing power continuously. I understand this is likely a parasitic drain where some component or circuit is staying energized when it shouldn't be, but I'm not sure how to systematically track down which specific circuit is causing the problem. I have a basic multimeter but I'm not entirely sure about the proper methodology for testing each circuit individually to isolate where exactly the power draw is coming from. What's the step-by-step process for using a multimeter to methodically work through the electrical system, starting from the main disconnect and testing individual fuses or circuits until I can pinpoint the exact source of this parasitic drain? …more
Sailun TerraMax HLT-C Tire Review: Are They Right for Your Class C Motorhome?
Engine Medium 1-2 hours for installation 364 👍

Sailun TerraMax HLT-C Tire Review: Are They Right for Your Class C Motorhome?

Since I'm planning to swap out my RV tires this Saturday — need to confirm these Sailun TerraMax HLT-C 225/75R16C E/10PLY tires are compatible with my Class C motorhome. I've been looking at the Sailun TerraMax HLT-C 225/75R16C E/10PLY tires since they seem like a good value, but I'm not sure if they're appropriate for a motorhome versus a trailer.

I know load ratings are important, but I'm honestly not entirely sure how to figure out if these tires would work safely on my rig. Should I be looking at my door placard or getting the actual weight measured? Any guidance would be really helpful since I don't want to make a costly mistake with something as important as tires. …more
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