How does the RV problem finder work?
- Pick the part. Tap a marker on the trailer, or pick the system from the list. Each marker sits where that part usually lives on a travel trailer.
- Read the short answer. You see the most likely causes for that part and the first things to check, taken from our full guide for it.
- Open the right guide. Pick the symptom that matches yours, or open the full guide. If the part shows a code, the error code link takes you to the codes for that system.
Why do so many RV problems start with the battery?
Many RV appliances need 12-volt power even when they burn propane. The furnace needs it for its blower and control board, and Suburban lists 10.5 volts as the minimum for its furnaces. Absorption fridges need it for their control board on gas, water heaters with electronic ignition need it to spark, and slide-out motors run off the battery even when you are plugged in. If more than one thing stopped working at the same time, check the battery, the battery disconnect switch and the 12-volt fuses first.
Common questions
How do I troubleshoot my RV step by step?
Start with the part that stopped working, then check the power or fuel it needs. Outlets, the air conditioner and the microwave run on 120 volts from shore power or a generator. Lights, fans, the water pump and appliance control boards run on 12 volts from the house battery. The furnace, water heater and fridge on gas need propane. Check breakers, fuses, battery voltage and the propane valve before you replace anything, and read any code on the display.
Which RV problems can I fix myself?
Most first checks are safe DIY jobs: resetting breakers and GFCI outlets, replacing blown fuses, charging the battery, opening the propane valve, lighting a stove burner to clear air from the line, cleaning AC filters and clearing vents. Leave gas valve and gas pressure work, refrigerant, fridge cooling units and control board repairs to a qualified tech.
Is it safe to troubleshoot RV propane appliances myself?
The basic checks are, as long as you never smell gas. If you smell propane, stop: shut the tank valve, get everyone out and call a tech. Turn off the propane and 12-volt power before you open an appliance cover, and never bypass a safety switch such as a furnace sail switch or limit switch.
What should I write down before I call an RV tech?
Write down the appliance brand, model and serial number from its label, any error code or blink pattern, what you have already checked, and when the problem started. That lets the tech bring the right part and spend less time on the clock.
What if my problem is not listed?
Use the search box at the top of the page with the words you would use to describe it, or open the guide for that system for an overview of how it works and what usually fails. You can also tell us through the contact page. Requests from readers decide which guides we write next.