Your RV problem,
solved at the campsite.
Describe the symptom the way you would to a friend who knows RVs. You get the diagnostic sequence a technician actually follows, cheapest and safest check first, drawn from the manuals instead of forum guesswork.
Symptom
Furnace blower runs but no heat
- 01Confirm propane reaches the appliances
- 02Measure battery voltage under blower load
- 03Restore full airflow to close the sail switch
Start here
Find your symptom
Every guide is free, has no account wall, and is ordered so the cheap checks come before the expensive ones.
RV furnace blows cold air
The blower runs but the burner never lights, so only cold air comes out.
RV water pump runs but no water comes out
The pump cycles or runs continuously but taps deliver nothing or only sputters.
RV slide-out will not move in or out
The slide is dead, clicks without moving, or binds and travels unevenly.
No 12V power anywhere in the RV
Interior lights, water pump, furnace and fans are all dead at once.
RV refrigerator not cooling on propane
The fridge cools on shore power but not on propane, or fails to cool on either.
RV air conditioner runs but is not cooling
The rooftop unit runs but the air coming out is barely cooler than the cabin.
By system
Five systems, and where problems actually come from
Most complaints that look like a broken appliance turn out to be a power, airflow or supply problem upstream of it.
Electrical and power
12V DC house systems, converters and inverters, shore power, generators and batteries. Most so-called appliance failures are really a voltage problem.
3 guides
Water and plumbing
Fresh water pumps and lines, city water, holding tanks and sensors, winterizing and leak tracing.
2 guides
Heating and cooling
Forced-air propane furnaces, rooftop air conditioners, heat pumps, thermostats and airflow faults.
2 guides
Appliances
Absorption refrigerators, water heaters, cooktops and ovens, and the propane and 12V feeds behind them.
2 guides
Chassis and exterior
Slide-outs, leveling jacks, awnings, brakes and running gear, roof and seal maintenance.
3 guides
What you get
An answer you can act on, not a paragraph of hedging
Every guide opens with the answer, then the ordered diagnostic sequence, then the safety notes and the point where the job stops being a driveway repair.
The answer first
The likely cause and the fastest way to confirm it, stated up front. No scrolling past an essay about the history of RVs.
Ordered by cost and risk
Free checks before paid parts, and safe checks before dangerous ones. Battery voltage before you condemn a control board.
Honest about limits
Where a job needs a certified technician, the guide says so and explains why, rather than talking you into a propane repair you should not attempt.
Excerpt · RV furnace blows cold air
ModerateQuick answer
Coverage
Built around the equipment actually in your rig
RV troubleshooting is mostly component-level. The furnace, fridge, converter and slide mechanism come from a short list of suppliers, whichever badge is on the outside.
8
RV builders with brand pages
77
Model families mapped
14
Component manufacturers
These are the numbers this site can stand behind: what is documented here, counted from the content itself. We do not publish user counts or accuracy percentages we cannot show you.
Go deeper
System guides
When you want to understand the system rather than chase one symptom.
9 min read
Understanding your RV electrical system
Every RV runs two separate electrical systems side by side. Understanding which one a device belongs to turns most power problems from mysteries into short checklists.
Read the guide8 min read
The pre-trip inspection that prevents most roadside failures
Most roadside RV failures are predictable and were visible before departure. This checklist is ordered by consequence, not convenience.
Read the guide8 min read
Winterizing an RV without wrecking the plumbing
Freeze damage is expensive, hidden until spring, and almost entirely preventable. The process is not complicated, but the order matters and two specific mistakes cause most failures.
Read the guideFrequently asked questions
What is CampWrench?
CampWrench is a troubleshooting service for RV owners. You describe a symptom in plain English and it walks you through the diagnostic sequence a technician would follow, drawn from RV owner and service documentation rather than from forum guesswork.
Is CampWrench free to use?
The symptom guides, system guides and manual coverage pages are free to read with no account. The conversational assistant, which answers questions about your specific rig, requires an account.
Does it work for my brand of RV?
Most RV troubleshooting is component-level rather than brand-level. A Suburban furnace behaves the same way whether it is installed in a Winnebago, a Jayco or a Grand Design, so the guidance applies across builders. Brand pages cover the differences that do matter.
Can it replace a certified RV technician?
No, and it does not try to. It helps you identify the problem, rule out the cheap and common causes, and arrive at a repair shop knowing what is actually wrong. Propane, 120V and hydraulic work should go to a professional when you are not confident.
How is this different from searching a forum?
Forums give you a stranger's guess about a different rig, and you sort through it yourself. This gives you an ordered diagnostic sequence, cheapest and safest test first, with the safety interlocks explained rather than bypassed.
Stuck on something right now?
Describe it in your own words. If it is one of the common ones, you will have the diagnostic sequence in front of you before you finish your coffee.