Why Does My Rv Furnace Keep Turning off

Why Does My RV Furnace Keep Turning Off?

Having a functional RV furnace is crucial for a comfortable camping experience, especially during cold weather. However, it can be frustrating if your RV furnace keeps turning off unexpectedly. Understanding the reasons behind this issue can help you troubleshoot and fix the problem, allowing you to enjoy a warm and cozy trip.

Possible Reasons

Several factors can cause your RV furnace to keep turning off. Let’s explore some of the common reasons:

1. Lack Of Airflow

A restricted or inadequate airflow is a common reason for an RV furnace to shut off. Check for any obstructions, such as closed vents or clogged air filters. Ensure that all vents are open and clean, allowing proper air circulation within the furnace system. Additionally, make sure there are no blockages or debris in the exhaust vent.

2. Thermostat Issues

Faulty or misconfigured thermostats can cause the RV furnace to turn off unexpectedly. Ensure that the thermostat is set to the desired temperature and mode (heat). If the thermostat’s temperature sensor is not functioning correctly, it may provide inaccurate readings, leading to the furnace shutting off prematurely. Consider replacing the thermostat if necessary.

3. Voltage Problems

An inadequate power supply can interrupt the normal functioning of your RV furnace. Check if there are any issues with the RV’s battery or electrical system. Low voltage can cause the furnace to shut off as a safety precaution. Ensure the battery is charged, connections are secure, and the electrical system is in good working condition.

4. Overheating

RV furnaces are equipped with a safety mechanism that shuts off the system if it starts to overheat. Overheating can occur due to restricted airflow, a dirty burner, or a malfunctioning limit switch. Clean the furnace burner assembly and ensure proper airflow to prevent overheating. If the limit switch is faulty, it may need to be replaced.

5. Gas Supply Issues

A problem with the gas supply can also cause the RV furnace to shut off. Check if the propane tank is empty or malfunctioning. Ensure that the gas valve is fully open and that there are no blockages in the gas lines. If you suspect a gas leak, it is essential to address the issue immediately for safety reasons.

Troubleshooting and Solutions

Here are some troubleshooting steps you can take to resolve the issue of your RV furnace repeatedly turning off:

1. Check The Igniter And Flame Sensor

If your RV furnace has an electronic ignition system, the igniter and flame sensor may be faulty. Clean the flame sensor with sandpaper or replace it if necessary. Additionally, ensure that the igniter is creating a spark consistently.

2. Inspect The Ductwork

Inspect the ductwork for any kinks, bends, or crushed areas that may restrict airflow. Straighten or repair the ducts as needed to promote proper airflow throughout the RV heating system.

3. Verify Proper Thermostat Calibration

Ensure the thermostat is calibrated correctly and is in sync with the furnace. You may need to adjust the anticipator setting on older thermostats. Follow the manufacturer’s instructions for your specific thermostat model.

4. Clean Or Replace Air Filters

Dirty air filters can restrict airflow and cause the furnace to shut off. Regularly clean or replace the air filters according to the manufacturer’s recommendations to maintain optimal furnace performance.

5. Seek Professional Help

If you’ve attempted these troubleshooting steps and your RV furnace still keeps turning off, it may be time to consult a certified technician. They can diagnose and resolve any underlying issues that may require specialized knowledge or tools.

Frequently Asked Questions For Why Does My Rv Furnace Keep Turning Off

Why Does My Rv Furnace Keep Turning Off When I Try To Light It?

Several factors can cause your RV furnace to shut off, such as a dirty burner, low propane levels, or a faulty thermostat.

How Can I Fix My Rv Furnace From Repeatedly Shutting Off?

Perform regular maintenance, clean the burner, check propane levels, ensure proper airflow, and have the thermostat inspected.

What Are The Common Reasons For An Rv Furnace To Keep Shutting Off?

Common reasons include a dirty furnace filter, a failing blower motor, a clogged burner, or an issue with the gas valve.

Is It Dangerous For My Rv Furnace To Keep Turning Off Unexpectedly?

While it can be inconvenient, it is not usually dangerous. However, if you smell gas or suspect a carbon monoxide leak, evacuate your RV immediately and seek professional help.

Should I Try Troubleshooting My Rv Furnace Turning Off On My Own?

Some simple troubleshooting steps can be taken by RV owners, but it is recommended to consult a professional if you are unsure or if the problem persists.


Dealing with a continuously shutting off RV furnace can be a major inconvenience during your camping trips. By understanding the possible causes and following the troubleshooting steps discussed above, you can identify and resolve the issue, ensuring a reliable and functional heating system in your RV. Remember, if you are unsure about any repairs, it is always best to seek professional assistance to ensure your safety and prevent further damage to your RV furnace.

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