Why Does My RV Furnace Keep Turning Off

Why Does My RV Furnace Keep Turning Off?

Having a properly functioning RV furnace is crucial for a comfortable and enjoyable camping experience. However, it can be quite frustrating when your furnace keeps turning off unexpectedly. There are several reasons why this may occur, ranging from simple issues to more complex problems. In this article, we will explore some common causes for an RV furnace to shut off and provide possible solutions to rectify the issue.

1. Insufficient Propane Supply: One of the primary reasons for an RV furnace to turn off is an inadequate propane supply. Ensure that your propane tank is not empty or low on fuel. Additionally, check for any obstructions in the propane lines that may be reducing the flow.

2. Dirty or Clogged Furnace Burner: A dirty or clogged burner can prevent the furnace from igniting or cause it to shut off unexpectedly. Regular maintenance and cleaning of the furnace burner can help resolve this issue. Use a brush or compressed air to clean away any debris or soot buildup.

3. Malfunctioning Thermostat: A faulty thermostat can cause your RV furnace to turn off intermittently. Check if your thermostat is set to the desired temperature and functioning correctly. Ensure that the wiring connections are secure and not damaged.

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4. Overheating Issue: If your RV furnace gets too hot, it may automatically shut off as a safety measure. This can occur due to restricted airflow caused by a dirty air filter or blocked vents. Clean or replace the air filter regularly and ensure that the vents are clear and unobstructed.

5. Electrical Problems: Faulty electrical connections, loose wires, or a blown fuse can contribute to the furnace shutting off unexpectedly. Inspect the furnace’s electrical components, including the circuit board and wiring, for any signs of damage or loose connections. Replace any blown fuses with the correct amperage rating.

6. Flame Sensor Issues: The flame sensor is responsible for detecting the presence of a flame in the furnace. If it becomes dirty or corroded, the sensor may fail to detect the flame, causing the furnace to shut off. Clean the flame sensor gently with a fine-grit sandpaper to remove any buildup.

7. Low Battery Voltage: Insufficient battery voltage can cause the RV furnace to shut off as it requires a constant power supply to function properly. Check the battery voltage using a multimeter and ensure that it meets the manufacturer’s specifications. Charge or replace the battery if necessary.


1. Why does my RV furnace turn on and off repeatedly?
This could be due to a faulty thermostat, a dirty or clogged furnace burner, or an overheating issue. Check these components and clean or replace as needed.

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2. Why does my RV furnace shut off after a few minutes?
An inadequate propane supply, a malfunctioning thermostat, or an overheating issue could be causing this problem. Check the propane level, thermostat, and clean the furnace components.

3. What should I do if my RV furnace keeps turning off?
Start by checking the propane supply, thermostat, and furnace burner for any issues. Clean or replace components as needed. If the problem persists, it is recommended to consult a professional.

4. Why does my RV furnace turn off when the battery is low?
The furnace requires a constant power supply to function properly. If the battery voltage drops too low, the furnace may shut off. Charge or replace the battery to resolve this issue.

5. Can a dirty air filter cause the RV furnace to shut off?
Yes, a dirty air filter can restrict airflow and cause the furnace to overheat. Regularly clean or replace the air filter to prevent this problem.

6. How often should I clean my RV furnace burner?
It is recommended to clean the furnace burner at least once a year or as needed. Regular maintenance will help prevent unexpected shutdowns.

7. Should I attempt to fix the furnace myself or seek professional help?
Simple maintenance tasks like cleaning the furnace burner or replacing the air filter can be done by RV owners. However, if the problem persists or involves complex electrical issues, it is advisable to seek professional assistance to avoid further damage.

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In conclusion, a variety of factors can cause an RV furnace to turn off unexpectedly. Regular maintenance, proper propane supply, and addressing common issues like dirty components or faulty wiring can help keep your furnace running smoothly. If troubleshooting steps do not resolve the problem, it is best to consult a qualified professional for further assistance.