Well, this is embarrassing. I just filled up my propane tank (because apparently I'm the genius who let it run completely empty), and now I'm sitting here like a caveman with no stove, no hot water, and definitely no s'mores tonight. The tank gauge says it's full, but absolutely ZERO propane is making it to any of my appliances.
I'm looking for a leak detector that seems to be missing, and the user manual shows it as #7 in the lineup. I think it should be between the regulator and supply line, but I can't seem to locate it. I checked around the typical areas but didn't spot anything that looked like it might be the shutoff valve.
I'm pretty sure I didn't suddenly develop superpowers that make propane disappear, so there's got to be something simple I'm missing. Is there some kind of safety shutoff that kicks in when tanks go empty? Or did my regulator decide to go on strike? I feel like I'm one step away from rubbing two sticks together to make coffee. Help a fellow RVer out before I completely lose what's left of my camping dignity!
Propane not reaching appliances is usually the excess flow valve tripped in the tank. Reset by closing tank valve, waiting 30 seconds, then opening it slowly. Also check the regulator.
Based on your description, the most likely culprit is indeed a missing or malfunctioning excess flow valve, which would prevent propane from reaching any appliances even with a full tank. Since someone apparently removed your leak detector and you can't locate the shutoff valve that's shown as #7 in your manual, you'll need to trace your propane line from the regulator to find where it should be installed. The excess flow valve is typically located within 18 inches of the regulator output, before the propane line enters the RV, and looks like a small cylindrical device with a reset button.
Common causes of complete propane loss to all appliances after filling include a tripped or missing excess flow valve. This safety device automatically cuts off gas flow when it detects a leak or pressure drop, and won't reset without manual intervention. Other potential causes include a faulty regulator that's not allowing gas to flow properly, a closed manual shutoff valve somewhere in the line, or debris blocking the regulator inlet.
Since your leak detector was removed, the shutoff valve may still be present but not functioning correctly. These valves can fail in the closed position, especially if they've been exposed to weather or haven't been used in a while. Additionally, if the propane system sat empty for an extended period, the rubber diaphragm in the regulator may have dried out and stuck closed.
SAFETY WARNING: Working with propane systems can be extremely dangerous. Work in a well-ventilated area, avoid any ignition sources, and if you smell gas at any point, immediately shut off the tank valve and move away from the area. Have a fire extinguisher nearby and consider having someone else present while you work.
Before starting, gather a flashlight, adjustable wrench set, and if possible, a manometer or propane pressure gauge to test system pressure. You'll also want to have a spray bottle with soapy water ready to check for leaks once you get the system working. Make sure your propane tank valve is fully open - it should turn counterclockwise until it stops and remain fully open. Also verify the tank actually contains propane, as tank gauges can malfunction and show full when the tank is empty.
Start by locating your regulator at the propane tank and follow the copper tubing or stainless steel line coming out of it. The excess flow valve should be downstream of the regulator, typically mounted to the RV frame or nearby structure. It will typically be a cylindrical device with threaded connections, though appearance varies by manufacturer and threaded connections on both ends.
If you find the shutoff valve, turn off all propane appliances and allow the system pressure to equalize for several minutes to reset the valve. You should hear a slight click or feel the button pop back out slightly. This resets the valve and should restore gas flow. If the button won't stay out or immediately pops back in, the valve may be defective and need replacement.
If you can't locate the shutoff valve at all, check if there's a threaded connection or union in the gas line near the regulator where it might have been removed. Look for a 1/4-inch or 3/8-inch NPT threaded fitting that's been plugged or capped. If you find such a connection, you'll need to install a new excess flow valve - use the correct part for your model (verify with dealer).
If you suspect regulator problems, have it tested by a qualified technician. You can also try connecting a different regulator temporarily to see if that restores gas flow. If the regulator is the problem, you'll need a replacement regulator with the correct BTU requirements for your system.
Call a certified RV technician or propane specialist if you can't locate any shutoff valve or if installing a new one doesn't restore gas flow. This indicates a more complex problem that could involve internal regulator failure, blocked gas lines, or issues with the tank itself. Professional diagnosis typically costs $75-100 but can prevent dangerous situations.
Also seek professional help if you smell gas at any point during your inspection, if the reset button on a leak detector won't stay engaged after multiple attempts, or if you're uncomfortable working with propane connections. Propane system repairs require proper torque to manufacturer specifications and leak testing that's best handled by experienced technicians to ensure your family's safety.
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