Why Does My RV Propane Detector Keep Going Off?

There’s no smell of propane in your RV propane detector, but it keeps going off. The alert may be caused by a number of factors. However, what should be done?

Are there any risks involved? Even if you’re convinced it’s a false alarm, you should take your propane gas detector very seriously whenever it goes off.

Here are some things to know if your RV propane detector keeps going off: what will cause a false alarm when to change your detector or what causes a false alarm.

Why Does My RV Propane Detector Keep Going Off?

There are many reasons why propane detectors go out, but I observe lots of them go out due to aging. It is recommended that you change your propane detector every 5 years.

Your RV’s propane detector goes off, but no need to freak out. It’s important to take it seriously, but it could be a result of many factors.

If the problem persists, you need to investigate deeper. Detected alarms are meant to alert you in emergency situations. Detection of propane leaks is possible even before a leak is smelt because the sensors are so sensitive.

Follow These Steps If Your RV Has a Gas Spill:

  1. If you haven’t already, switch off the RV’s propane supply.
  2. Turn back on each propane device after it’s been turned off. Making a list will prevent you from forgetting any of these devices.
  3. Give your RV a chance to breathe. Due to its density, propane gas tends to settle in low places within your leisure vehicle.
  4. When you have eliminated any propane smell and are convinced that no propane pockets exist, you can begin the test. Make sure there are no open flames nearby.
  5. It is necessary to slowly open the main RV tank valve.
  6. Wash the main valve and fittings of the propane bottle with soapy water. If bubbles form, this means you have a leak! Keep going if not.
  7. The appliances in the RV then need to be checked. After each appliance has been tested, repeat the soapy water test. You will notice leaks if there are any.
  8. You can relight your appliances once the leak has been fixed.

You should always contact a professional if you are uncertain whether your RV has a propane leak.

How to Replace RV Propane Detector:

For your safety, you should replace your propane detector if it continues to go off. For those who have money then they should hire a professional. However, if you do not have much then you should read this guide so you can change your RV propane detector in 5 steps.

Before changing the detector, buy it first. You can buy systems that detect propane and carbon monoxide. We purchased a new SAFE-T-ALERT RV Classic LP Gas Alarm to fit the same hole as our previous gas detector.

#1 Power off Your Alarm

Put your detector in the off position and disconnect the power from the circuit. The fuse is usually painted on the panel and can be removed to turn off the DC circuit.

If you’re sick of hearing the alarm go off, avoid what I did and remove the fuse for a few weeks. Now you can simply replace your old alarm by getting a new one!

#2 Unplug the Propane Alarm

By unscrewing the faceplate, you can disconnect the wires which lead to the detector. You might like to locate yours in the same cabinet where we did!

#3 Wires for Detectors

Wires that have been cut should have some shielding removed

#4 Replace Old Alarm with a New One

To connect the wires you cut to the new alarm, connect the leads from the new alarm. The colors should match up and connectors should be used to secure the connections. I keep a collection of nylon crimp connectors on hand for different RV wiring projects, as they work with DC wiring the best.

#5 Ensure That the Alarm is Attached and Tested

The new propane alarm only needs to be screwed in once more, and you are done! Sort of.

Once the fuse has been reset, test the new alarm a few times. You cannot simply turn on your gas stove once. You need to press its front button. There will usually be a piercing noise until the solid green light indicates everything is all right once you press the button a few times.

Check our out guide on How to Test An RV Propane Detector? (Easy Steps to Follow)

Is It Possible to Bypass LP Gas Detector?

Yes, You’ll have to check the wiring. Voltage is sent to gas valves located at/near tanks to open the valves. The wiring in RVs varies. Bypassing the LP gas detector requires expert knowledge.

Problems Found in Safe-T-Alert 35-742:

I face many problems, but the following are the most common problems found in Safe-T-Alert 35-742.

1. Gas Detector:

Gas detectors of this kind are common in beeping systems with no explanation. The device may have a problem or there may be an actual issue with your vehicle if there are leakages in your vehicle.

It is common for detectors to malfunction as they age. Cut off the alarm’s power connection and access the sensors if you want to start by switching off the alarm. Do not cover these with dust.

Use a pin to clean the dust. Verify that all connections are safe and secure. If the propane detector goes off then you will need to replace it immediately.

2. Issues with Electricity:

Troubleshooting 35-742 can be alarming when it runs into problems. It is a gas leak detector. When the equipment doesn’t work properly, it is always advisable to check its connections first. Since this model is powered by 12-volts, batteries are not necessary.

The batteries might not need to be replaced as often, but this could save time and hassle. A better approach is to troubleshoot the connection of the user instead. It may take longer and be riskier.

For those who are wary of checking the connections themselves, you should have them checked by a specialist.


1. What does an RV propane detector do?

RV propane detectors can be used to detect propane leaks in RVs. In order to alert everyone in the rig that there is a problem, a loud beep is emitted when the device detects gas leaks. This can help to prevent injuries.

2. How to replace Safe-T-Alert RV propane gas detector?

Purchase a Safe-T-Alert according to your propane gas detector first. Then discard the old Safe-A-Alert wires. Replace them with new wires. Finally, it needs to be fixed.


You could have this problem that your RV camper’s Propane Detector Keeps Going off only at night or even daytime too.

If your RV’s carbon monoxide detector gives a false alarm and keeps beeping. You need to troubleshoot your problem and replace your detector or you can hire an expert for this work.

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