Why does my RV propane detector keep going off?
So, why is your RV propane alarm going off randomly? Many sprays such as cooking spray, Febreze, sunscreen, bug spray, and cleaners can all set off your alarm. A pet sleeping on the floor laying against the alarm will set it off due to the fact that they are blocking fresh air from entering the monitor.
Propane is essential to powering up many RV appliances and therefore, all RVs should be equipped with a propane leak detector. If gas leaks go undetected, they can be dangerous and deadly, leading to fires and more.
An RV propane detector senses and indicates the presence of propane gas in the air. When a certain concentration of gas is detected, the unit uses both an audible alarm and a light to indicate the presence of propane, alerting people in the area to the danger.
The red blinking light on the Atwood RV Carbon Monoxide and Propane Gas Detector part # AT36681 under the propane heading means that the propane sensor is disabled or faulty. I recommend doing a hard reset of the unit but if that does not work then make sure you are getting at least 9 volts to the unit.
- Calibration Drift. All sensors from all manufacturers drift over time. ...
- Environmental. Dirt, dust and water impact. ...
- Gas Exposure. ...
- Physical Affects. ...
- Catalytic Sensors Affected by Poisons and Inhibitors. ...
- Electrochemical Sensor Poisoning. ...
- Temperature Affect. ...
- Moisture.
As your propane level gets low, it is designed to emit a small propane smell. The smell can be equated to the smell of rotten eggs. The systems are designed this way to alert the homeowner or business owner that your tank is running low and it's time for a refill!
Sensors should be located near the floor for gases or vapors three or four times heavier than air. They should be installed near the ceiling or roof to detect lighter-than-air gases.
You can purchase a propane detector for as little as $20. Then install one wherever you have a propane appliance. You should also install a propane detector outside each bedroom. Because propane is heavier than air, place them low to the ground (no higher than your bedroom's pillows).
For that reason, “full” for most propane tanks is 80-85%. More than that can cause problems. Don't worry: Gauges tend to be accurate, and even if your tank is down to 20%, there is still plenty of time to refill it. At Kauffman Gas, we always strive to schedule refills around the 20% mark so you never run out.
Look at the gauge attached to the tank with numbers from 5 to 95. The numbers indicate the percentage of gas in the tank. If your tank has a gauge that ranges 0-300 that is pressure not percentage. This chart shows how many gallons of propane you have in your tank at a given percentage.
What are the 3 ways to detect a propane leak?
- Smell of gas lasts more than an instant after igniting stove-top burners.
- Presence of a foul odor persists.
- You cannot find the reason for the foul odor.
- What you think may be garbage, sewage, or a dead animal may be a serious gas leak.
If the propane leak alarm in your RV is constantly going off, don't panic. In most cases, the detector is just old and needs to be replaced. Propane gas detectors should be replaced every 5-7 years. In fact, you will find an expiration date on the front of most common LP leak detectors.

Checking for a propane tank leak is easy. Apply soapy water or a special leak detector solution to where the propane tank's cylinder valve and regulator outlet connect. Next, you'll need to slowly open the cylinder valve. Bubbles will form if there is a leak.
If your RV systems are functioning correctly, the most likely culprit for beeping is a low battery. Since your RV may not always have a continuous power supply, your detector relies on these onboard batteries. But they don't last forever.
Bump testing is the only way to ensure the sensors and alarm on your portable gas detector are functioning properly. A bump test involves exposing the detector's sensors to a concentration of gas that is greater than the alarm set points. If the sensors are working properly the alarm will go off.
In domestic properties, your CO alarm can be triggered by any fuel burning appliance such as gas cookers, boilers and ovens. All of these appliances give off small traces of CO, but the levels can rise slightly when adequate ventilation isn't provided, or the venting is blocked or clogged by dust.
If fire, smoke, or toxic/combustible gas is detected at a location, an alarm or specific action will be triggered. Main sensors for this system include: Combustible gas detector (CGD): Methane is the major item.
Why does my house smell like gas, but there's no leak? A faint propane smell may not be cause for alarm. It's normal for a propane odor to linger when lighting a stove, or if the pilot light in a gas fireplace, hot water heater or other appliance goes out.
- Propane leak detector goes off.
- “Eggy” or gassy propane smell or odor.
- Consuming unusual amounts of propane.
- DSI or other error codes from a propane-fueled water tank or refrigerator.
Propane gas has no odor. Propane companies add a harmless chemical called mercaptan to give it its distinctive “rotten egg” smell. All propane pipeline gas in Connecticut is odorized. If you smell gas near an appliance , it may be just a pilot light that has gone out or a burner valve that is open slightly.
How high should a propane gas detector be mounted?
Heavier than air gases should typically be detected 6 inches from the floor, lighter than air gas sensors should typically be placed on or near the ceiling, and gases which have a density close to that of air should have sensors installed in the "breathing zone" 4 - 6 ft (1.2 - 1.8 m) from the floor.
Appendix B note to Rule 2-326
The clearance distances specified in CSA B149. 1 between a source of ignition and a combustible gas relief discharge device or vent are as follows: (a) 1 m for natural gas; and (b) 3 m for propane gas.
Accuracy: Typically listed with a plus or minus 5 percent, it is associated with a confidence interval of 95 percent. This means in 95 out of 100 results, the readings should be within plus or minus 5 percent of the actual gas concentration.
Acetone, industrial solvents, alcohol, ammonia, lacquer, thinners, benzene, methane, butane, naphtha, ethylene oxide, natural gas, gasoline, propane, halon, refrigerants, hydrogen sulfide, and toluene are just some of the combustibles that a 4 gas monitor can detect.
Combustible gas detectors use catalytic and infrared sensors, and since propane gas is heavier than air, detectors should be placed low to the ground.
The RV Safe alarm is unsurpassed in its use of the latest technology to quickly and accurately alert occupants of the presence of deadly Carbon Monoxide and Propane Gas.
Your propane tank gauge should never fall below 20%.
Having a smart tank monitor allows you to measure your increased utility usage while you're at home. It's also great at allowing you to measure propane activity when you have to leave your home. This way, you can make sure your home is warm for your return and you don't have to worry about running out of gas!
These magnetic temperature based gauges unfortunately don't work and pressure gauges are said not to work and also many complaints about the pressure gauges leaking. Currently, the only inexpensive answer is the propane tank spring scale gauge.
The most accurate vehicle tested had an error of 0.1 mpg under estimate for the complete series of cycles and individual cycles varying by 0.5 mpg, while the least accurate vehicle had an error of 2.2 mpg over estimate and individual cycles varying by 3.8 mpg.
How can you tell how much propane is left by weight?
To measure how many pounds of propane are left in your tank, simply weigh it on a scale and subtract the TW number. For example, if a tank weighing 27 pounds has a TW of 17 pounds, there's about 10 pounds of gas left – a little more than half a tank.
Propane tanks generally are stamped with an empty or “tare” weight - usually between 17 and 19 pounds. A standard sized propane tank when filled holds 20 pounds of propane. Place the tank on your scale to get the total weight, and then subtract “tare” weight to determine how many pounds of propane is left in your tank.
These numbers indicate the percentage of how much your tank is filled – NOT the number of gallons left in the tank. Good to note: propane tanks are designed to be filled to 80% of capacity. This is because gas needs room to expand with changing temperatures. A “full” propane tank gauge will read 80%.
Propane vapor is not toxic, but it is an asphyxiating gas. That means propane will displace the oxygen in your lungs, making it difficult or impossible to breathe if exposed to high concentrations. If you suspect you have inhaled a significant amount of propane, call 911.
But the problem with all of these detectors is that they can't alert for propane. People who use propane for their heating or cooking needs may mistakenly feel that they are protected, when in fact they really are not. A CO detector can't detect a leak in a propane tank, which means homeowners could still be at risk.
Once you are a safe distance away, use your cell phone or another phone to call your propane supplier and alert them that there may be a leak. If you can't get your propane company on the phone, call 911. Your local fire department will respond to a potential gas leak if necessary.
So, why is your RV propane alarm going off randomly? Many sprays such as cooking spray, Febreze, sunscreen, bug spray, and cleaners can all set off your alarm. A pet sleeping on the floor laying against the alarm will set it off due to the fact that they are blocking fresh air from entering the monitor.
Most RV propane detectors last from five to seven years before they require replacement. However, it's a very good idea to replace your propane detector on a strict schedule so that you don't forget… and wind up in a situation where it's been ten years since you've tended to yours.
A Bad Odor: The most obvious sign of a propane gas leak is the odor. Although propane itself has no odor, many propane manufacturers add a chemical to the gas that produces a “rotten egg” smell. A Hissing Noise: Another sign of a gas leak is a distinct hissing or whistling sound near the gas line.
Propane Gas Regulations and Safety Measures
Since LP gas is stored under pressure in a liquified state, even a small leak can create the possibility of significant gas explosion and fire.
How much propane is lost from a leak?
Just one gallon of propane which produces 36.39 cubic feet of vapor will fill almost 73 standard size balloons or 2 standard size (18 cu. ft) refrigerators. 1 Gallon of propane lost in a leak fills roughly 73 standard size party balloons.
Reason #3: Your RV CO Detector Is Running Low On Battery
It always seems to happen in the middle of the night and can drive you absolutely crazy! When your RV CO detector is running low on battery it will typically chirp once or twice every 30 seconds.
Your carbon monoxide alarm is going off for one of the following reasons: It is doing its job properly and detects CO pollution in the air. It is a false alarm caused by other household items. The detector is malfunctioning or the batteries need changing.
Your carbon monoxide detector will beep for one of three reasons. Each one is to alert you to take action of some sort. Either it detects carbon monoxide, it has low battery power, or it is nearing the end of its lifespan.
The replace-by date may have been exceeded.
This is the most common reason for false alarms. Excessive moisture from a bathroom may set off your CO alarm. CO alarms should not be installed in areas with excessive steam. Lead acid battery chargers produce hydrogen gas which sets off CO detectors.
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Early Signs of CO Poisoning
- Dull headache.
- Weakness.
- Dizziness.
- Nausea or vomiting.
- Shortness of breath.
- Confusion.
- Blurred vision.
- Loss of consciousness.
Checking for a propane tank leak is easy. Apply soapy water or a special leak detector solution to where the propane tank's cylinder valve and regulator outlet connect. Next, you'll need to slowly open the cylinder valve. Bubbles will form if there is a leak.
Ultimately, no, a carbon monoxide detector cannot detect a natural gas leak. Carbon monoxide (CO) is a toxic gas created when fuel is burned in the presence of low levels of oxygen. Carbon monoxide is very different from methane and cannot be detected with the same sensor.
Carbon monoxide is released when appliances and vehicles burn combustibles such as propane, wood and fuel oil. Only a carbon monoxide alarm can detect the gas and warn you.
Three beeps, at 15-minute intervals = MALFUNCTION. The unit is malfunctioning. Contact the manufacturer or the retailer where you purchased the alarm.
Will a carbon monoxide detector keep beeping if there's carbon monoxide?
A CO alarm that beeps continuously without stopping could indicate that carbon monoxide is present. If you your CO alarm is sounding continuously and you have signs of CO poisoning such as dizziness, headache, vomiting or flu like symptoms, find fresh air and call 9-1-1 immediately.