Popular New Guides Product Guides Tools Checklists My Rig

Results for "furnace repair"

787+ Q&A Updated Weekly Free
RV Propane Regulator Freezing Up? Common Causes & Easy Fixes
Propane Easy 30 minutes 176 👍

RV Propane Regulator Freezing Up? Common Causes & Easy Fixes

About the third time this season my propane system is acting up during cold weather prep and I'm done trying to figure this out on my own. When temperatures drop, I notice my propane regulator develops frost on it and the gas flow seems to slow down or stop completely. This makes me nervous - is this actually normal behavior or do I have a serious problem?

I'm worried about running my furnace and other propane appliances when this happens. Should I be concerned about safety? And if this freezing is normal, what's the safest way to prevent it from happening? I don't want to do anything that might make the situation worse or create a hazardous condition. …more
Safari Motorcoach LPG Tank Refill for Stationary RV Setup
Electrical Medium 1-2 hours research and setup 173 👍 1

Safari Motorcoach LPG Tank Refill for Stationary RV Setup

Between my toolbox and the YouTube tutorials I've watched, I'm ready to tackle the LPG tank refill setup on my permanently parked 2000 Safari Sahar 32-footer. Since my wife and I live in California and visit several times per year to help her aging parents, the RV serves as a stationary dwelling with full hookups for shore power and water.

The challenge is that the coach won't be moved to drive to propane filling stations, so I'm exploring on-site refill options. I'm specifically interested in potentially transferring propane from a standard 40lb grill tank to our RV's fixed tank. I want to understand what type of fitting our Safari Sahar has and what safety considerations or special equipment might be required for liquid-to-liquid propane transfer.

Since we'll need heating during colder months and my wife will sometimes be at the RV without me, I want to ensure a reliable and safe refill method. What are my options for refilling the LPG tank without moving the motorcoach? …more
RV LP Gas Detector False Alarms: Complete Troubleshooting Guide
Propane Easy 30 min 163 👍

RV LP Gas Detector False Alarms: Complete Troubleshooting Guide

Already tried everything but my RV's LP gas detector has false alarms in the garage, keeps beeping at random times, AND won't reset properly. Even with the LP tank completely shut off, the alarm still goes off within hours. It's located in the bottom of the fridge cabinet.

I've checked everywhere for actual leaks - can't smell anything, and all my appliances still light immediately when I take the RV out. The detector seems fine outside but becomes a nightmare indoors. I'm wondering if it's the sensor going bad, poor placement, or if there are other things that can trigger these detectors besides actual propane leaks?

I really need a complete breakdown of what causes these false alarms and how to fix this issue once and for all. Should I be looking at replacing the detector entirely, or are there troubleshooting steps I'm missing? …more
Atwood AFMD35 Furnace Playing Peek-a-Boo - How to Clean Flame Sensor & Fix Short Cycling
Propane Medium 30-60 minutes 135 👍 1

Atwood AFMD35 Furnace Playing Peek-a-Boo - How to Clean Flame Sensor & Fix Short Cycling

Staring at my Atwood AFMD35 manual that claims it should stay running once lit, but mine keeps shutting off every few minutes like it's playing peek-a-boo. It fires up beautifully for about 5-10 seconds, gets my hopes up that I won't freeze tonight, then promptly shuts off like it's having second thoughts about this whole "heating the RV" thing.

I've ruled out the sail switch and high temp limit since it actually lights (small victories in RV life, right?). I'm pretty sure the flame sensor is the culprit here, but I've never cleaned one before. How do I clean this mysterious little part, and what's the best way to access it on this model? Because apparently my furnace thinks playing hard-to-get is charming! …more
How to Add Coleman Mach Heat Strips to RV AC Unit - Heat-Ready Control Box Installation Guide
Ac Refrigeration Hard 2-4 hours 134 👍

How to Add Coleman Mach Heat Strips to RV AC Unit - Heat-Ready Control Box Installation Guide

Tried running my RV's electric heating this winter but it's eating through power way faster than it should, so I'm looking at adding Coleman Mach heat strips. I have a SportTrek Touring 272VRK with two AC units (Coleman-Mach 13.5k BTU and 15k BTU, models 48203-069 and 48204-069) with Cool-Only Control Boxes (model 8330-752) and I'm considering adding Coleman Mach electric heat strips, but I'm worried about a few things.

First, I'm concerned about whether my current AC units are compatible with heat strips - specifically the Coleman Mach 37203-4551 Electric Heat Kit/Strip. I want to confirm this will work with my existing 8330-752 control boxes. Second, I'm worried about the electrical load - I keep reading about heat strips drawing a lot of power and I'm scared of overloading my system or tripping breakers.

Most importantly, I absolutely do NOT want to lose the ability to use my existing Suburban SF-30FQ 30,000 BTU propane furnace - it's my primary heat source and I need that independence. I currently have 9420a381 digital thermostats controlling these systems, and I want to ensure I can maintain my current setup.

Is there a way to safely add Coleman Mach heat strips using some kind of Heat-Ready Control Box without compromising my furnace operation? I just want some reassurance that this can be done properly without creating problems. …more
Complete RV Solar System Guide 2024: Sizing, Installation & Wiring
Solar Batteries Medium 4-8 hours 132 👍

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

Still stuck on this repair?

Get a personalized answer from a verified RV mechanic. Describe your issue and get step-by-step help.

Chat with an RV Mechanic
27708 RV owners helped · Avg response under 5 min
RV Furnace Blowing Cold Air? Fix Ignition Issues Fast
Propane Medium 45 minutes 131 👍

RV Furnace Blowing Cold Air? Fix Ignition Issues Fast

Staring at my RV furnace blowing cold air at 2 AM with the fan running — desperately need this fixed before morning hits.
I can hear it trying to ignite but it never actually lights. What are the most common causes when a furnace won't ignite? Need to know what components to check and how to diagnose ignition problems myself. …more
RV 12V Auto Reset Breaker Size Guide: 30A, 40A, 50A Selection
Electrical Easy 30 minutes 126 👍

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 Alternator to Lithium Battery Charging: Complete DC-DC Wiring Guide for Safe Installation
Electrical Hard 4-6 hours 120 👍

RV Alternator to Lithium Battery Charging: Complete DC-DC Wiring Guide for Safe Installation

Last week I picked up my 2007 Holiday Rambler and discovered the previous owner left the alternator-to-battery charging system a dangerous wiring disaster that could destroy my new lithium batteries.

I'm upgrading from four 6V lead-acid house batteries to lithium, and I keep reading conflicting advice about alternator charging. Some people say "just connect it directly," others are warning about alternator damage and proper current limiting. I'm planning to add a DC-to-DC charger eventually, but I'm confused about whether I can safely use the alternator to charge lithium batteries in the meantime.

What's the right way to handle alternator charging with lithium batteries? Should I disconnect the alternator feed completely until I get a proper charging system, or is there a safe way to make this work without turning my alternator into an expensive paperweight? …more
Thor ACE F53 Chassis Wheel Bearing Service & Propane Detector Replacement Guide
Electrical Medium 2 hours 119 👍

Thor ACE F53 Chassis Wheel Bearing Service & Propane Detector Replacement Guide

During my pre-trip inspection on my Thor ACE F53 chassis, discovered grinding wheel bearings and a dead propane detector that needs immediate replacement.

First, I desperately need to get my wheel bearings serviced/greased, but I'm having trouble finding someone who will work on them. Camping World told me they only service trailers, not motorhome chassis. I'm worried about driving much further without proper maintenance - where should I be looking for this type of service?

Second issue has me even more concerned: my propane detector started beeping constantly and wouldn't stop, so I had to pull the fuse. Now I discovered that with the fuse pulled, my slides won't operate at all! This seems like a safety feature, but I'm not sure if the detector just needs replacement or if there's a bigger problem. Are these systems really connected, and is it safe to replace the detector myself? …more
Can You Remove an RV Inverter Charger Without Replacement? (Yes, Here'
Solar Batteries Medium 3-4 hours 113 👍

Can You Remove an RV Inverter Charger Without Replacement? (Yes, Here'

Called three RV supply shops about replacing my failed Xantrex inverter/charger in my 2001 Fleetwood Expedition — but do I even need one or just wasting money? Since I never utilize the inverter function and rely exclusively on generator or shore power for 120V loads, I'm evaluating whether complete removal is feasible rather than expensive replacement.

My primary concern is maintaining proper 12V DC charging capabilities for house batteries that power lighting, water pump, and ventilation systems. Would installing a standalone battery charger provide adequate charging and maintenance functionality? Are there any critical system integration issues I need to address, particularly regarding power transfer switching between shore power and generator sources? …more
Suburban SF-30 Furnace Replacement: Complete Unit vs Core Guide for RV Owners
Propane Medium 4 hours 111 👍

Suburban SF-30 Furnace Replacement: Complete Unit vs Core Guide for RV Owners

Somewhere between our freezing mountain trip last month and now, my 2002 Born Free's SF-30 furnace died completely and I'm torn between replacing the core versus the whole unit. I believe it's a Suburban SF-30 model. I've been doing some research and see there are two options - I can buy a complete furnace replacement or just get a replacement core that supposedly slides into the existing SF-30 housing for about half the price.

I'm honestly not sure which route to go. The cost savings on the core is tempting, but I don't want to make the wrong choice and end up with more problems. As someone who's still learning about RV maintenance, would you recommend getting the complete unit or would the core replacement work just as well? Any guidance would be really appreciated! …more
RV Lithium Batteries: Dual Purpose vs Deep Cycle for Coach House Banks & Performance
Solar Batteries Easy N/A - informational 109 👍

RV Lithium Batteries: Dual Purpose vs Deep Cycle for Coach House Banks & Performance

Despite watching countless YouTube videos on RV lithium batteries, I'm now more confused than when I started about dual purpose versus deep cycle for my motorhome's house bank. I understand that dual purpose batteries are designed to handle both starting and deep cycling applications, which sounds convenient for an RV setup. However, I'm wondering if there are performance trade-offs when using dual purpose lithium batteries specifically for coach/house battery applications where they'll primarily be doing deep cycling to power lights, water pump, refrigerator, and other 12V systems. Would I be better off with dedicated deep cycle LiFePO4 batteries for my house bank, or do dual purpose lithium batteries offer sufficient performance for typical RV boondocking and daily use? I want to make sure I'm getting the best cycle life and value for my investment in a house battery system. …more

Need a second opinion?

Not sure if this applies to your rig? An RV technician can confirm the fix for your specific make and model.

Ask an RV Expert
27708 RV owners helped · Avg response under 5 min
Suburban KT30 Furnace 521099 Circuit Board Upgrade: Complete Wiring Fixes & Spark Troubleshooting
Propane Medium 2-3 hours 107 👍

Suburban KT30 Furnace 521099 Circuit Board Upgrade: Complete Wiring Fixes & Spark Troubleshooting

The multimeter's charged and screwdrivers are laid out — ready to fix this Suburban KT30 Furnace 521099 circuit board myself, just need the proper wiring sequence. I upgraded my Suburban KT30 furnace with the new 521099 circuit board and 528039 adapter harness after the original board failed. The good news is I now have power to the gas valve through the brown wire - that part's working!

But here's what's driving me crazy: when the gas valve opens, I'm only getting ONE spark at the electrode instead of the continuous 5-7 seconds of sparking I should be getting. I've been digging through wiring diagrams and realized the old board had a dedicated wire for the flame sensor, but the new setup just has me grounding that old flame sensor wire.

I'm pretty sure this flame sensor wiring issue is what's causing the single spark problem instead of continuous ignition, but I can't figure out how to properly wire it with this new 521099 board. Has anyone successfully done this upgrade and gotten the flame sensor circuit working correctly? …more
Suburban SH-42 Heater Wiring Diagram: Complete Thermostat Connection Guide
Electrical Medium 30-60 minutes 105 👍

Suburban SH-42 Heater Wiring Diagram: Complete Thermostat Connection Guide

Around two days before our two-week camping trip, I discovered my Suburban SH-42 propane heater's new thermostat wiring might be completely wrong. The unit was experiencing starting issues prior to the thermostat replacement, and I want to ensure proper circuit continuity.

What is the correct thermostat wiring configuration for the SH-42, and what is the proper procedure to test the thermostat circuit to confirm the connections are functioning correctly? I need to determine if the issue is with the wiring connections or potentially the new thermostat itself. …more
Robert, RV Mechanic
Ask an RV Mechanic Avg reply < 5 min

My Rig Settings

Hi, I'm Hank!
Need help setting up? I can walk you through it
Rig Info
Give it a name you'll recognize
Power & Electrical
Climate Control
Water System
Refrigerator Type
Leveling System
Convenience & Features
Sync across devices

Rig Saved to Cloud

Your sync code (use this to load your profile on another device):

Write this down! There is no way to recover it if you lose it and clear your browser.