Common Jayco Water Heater Problems and Solutions

Alex Ortiz
By Alex Ortiz 18 Min Read
18 Min Read
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Ever gone on a trip in an RV? If you have, you know it’s super fun! It’s like having a tiny house on wheels, letting you travel and camp out under the stars. One of the cool brands that make these rolling homes is Jayco.

But guess what? Just like every other thing you own, sometimes RVs have little issues. One common hiccup for Jayco RVs? Problems with the water heater.

Imagine getting ready for a warm shower after a long day of adventures and… the water’s cold! Yikes! Or maybe you’ve noticed that the water smells a bit off or there’s a leak in the tank. If you’ve got a Jayco RV and you’re scratching your head about water heater issues, don’t worry! You’re in the right place.

What Are The Common Problems With Jayco Water Heater?

Alright, so you’ve got a Jayco RV, and you’re wondering what could possibly go wrong with its water heater, right? Let’s break down some of the common things that might be making your road trips a little less cozy.

1. The Water’s Cold! (Water Not Heating Up) Probably the biggest “uh-oh” moment. You turn on the tap expecting a warm flow and get chilly water instead. Brrr!

2. Drip, Drip, Drip… (Leakages) Nobody likes puddles, especially inside an RV! If your water heater’s leaking, you’ll want to find out why.

3. What’s That Smell? (Bad Smelly Water) Ew! If your water’s giving off a funky smell, it’s a sign that something’s up with your heater.

4. Black Stuff Everywhere (Soot Buildup) This is when the heater’s burning stuff it shouldn’t, and you get this icky black residue. Definitely not cool!

5. Where’s the Pressure? (Low Water Pressure) You turn on the shower and the water’s just trickling out? That’s low water pressure for you.

5 Common Problems with Jayco Water Heater and Their Solutions:

Alright, my friends! So we’ve gone over the issues your Jayco water heater might face. Now, let’s dive deep into each one, find out why they happen, and most importantly, how to solve them.

1. Brrr, Why Isn’t My Water Warm? (Water Not Heating Up)

Symptoms: You’re super excited for a warm shower, turn on the tap, and… it’s cold. What’s worse? Your tank doesn’t seem to be filling up with any water, hot or cold.

Why does this happen?

  • The Bypass Valve Might Be Closed: This little valve stops any cooling liquid (like antifreeze) from getting into your heater. If it’s closed, the coolant can get in and chill your water.
  • Thermostat Troubles: The thermostat is like the brain for your water’s temperature. If it’s set wrong or if it’s broken, you won’t get that toasty water you’re hoping for.

How Do I Fix This?

Bypass Valve Blues: First, let’s tackle the bypass valve. Your heater is kept safe from the coolant by this valve. If somehow antifreeze sneaks in, you need to clear out your heater before storing more water for showers or dishes. Make sure this valve is turned on, so no cold coolant surprises you.

Thermostat Tinkering: The thermostat decides how hot or cold your water will be. If there’s a problem, you’ll want to look into it. For this, you’ll need a tool called a multimeter.

  1. Pop off the top and bottom covers of the thermostat unit using a flathead screwdriver.
  2. You’ll find some insulation inside. Look for a cutout area for the thermostat.
  3. Crank up the top thermostat to the maximum setting.
  4. Set your multimeter to RX1. Place one probe on the connector at the bottom left. Put the other probe on terminal screw #1 (it’s right above terminal #2).
  5. If the multimeter shows a value of 0, everything’s okay. If it doesn’t show anything, your thermostat might need some fixing. It might be best to ask an electrician pal or a professional for help.

How Much Does All This Cost?

Sometimes, just adjusting or fixing the thermostat will do the trick. But if you need to get a new one, it’ll probably cost you around $150-$200. Worth it for those warm showers, right?

Problem 2: Leakages

Have you ever woken up to a puddle of water around your RV? It’s like your water heater decided to have a little cry! Let’s talk about why this happens and what you can do about it.

Symptoms: Water’s spilling from the pipes attached to the water heater. Or maybe you found water hiding under your shower tray. Yep, sounds like you’ve got a leak!

What’s Behind These Watery Tears (or, Why is it Leaking)?

  • T&P Valve Troubles: T&P stands for Temperature and Pressure. If this valve breaks or acts up, you’ll find water escaping.
  • Too Much Pressure: Imagine a water balloon that’s filled way too much. Pop! Your water heater can feel like that if there’s too much pressure.
  • Getting Too Hot to Handle: If your water heater’s getting too warm, it might start to sweat… I mean, leak!
  • It’s Not Always the Tank: Sometimes the plumbing pipes play tricks and start to leak. Other times, the water storage tank can spill from the top, making everything wet.

Alright, So How Do I Stop These Leaks?

Dealing with the T&P Valve: Put a bucket under the pipe from the T&P valve. Gently open and clean the valve to get rid of any yucky stuff. If after cleaning, it still drips, then you might need a new one.

Hot and Bothered (Overheating and Pressure): To chill your heater out, head over to your thermostat and check its temperature. If it’s too high, turn it down a bit. This should help your heater relax and stop the leaks.

Pipe Leaks: Give your pipes a close look to find any sneaky leaks. Spot a little one? You might be able to seal it up with a leak stopper. If it’s a big leak, though, you might need a new pipe.

Storage Tank Troubles: Got a leak in the storage tank? It’s often because of tiny parts called o-rings that need a change. Make sure the tank is clean, and if you spot a bad o-ring, replace it.

And What’s the Damage (Cost-wise)? If you need a new T&P valve, you might spend anywhere from $150-$550. But if it’s just an o-ring acting up, those are super cheap – just some pocket change will do.

Problem 3: Bad Smelly Water

You know that icky smell, kind of like rotten eggs, when you turn on your tap or shower? Yuck, right? Well, that’s a sign something’s up with your water heater. Let’s dive into it and figure out how to fix this!

Why Does My Jayco Water Heater Smell So Bad?

Okay, so you’ve got smelly water. Not fun! But why? Sometimes the answer is super simple. Imagine your water heater as a big container. Over time, some yucky stuff, like dirt and harmful tiny bits, can get trapped inside. This might be making your water smell bad.

Another reason? There’s this thing called an anode rod right at the bottom of your heater. If it starts wearing out, it can cause that stinky smell.

Making Your Water Smell Fresh Again

If you think the smell comes from dirt and stuff trapped inside, here’s a cool fix. First, make sure the water in the tank is cooled down. Then, let all the water out (we call this “flushing”). This will help get rid of some of the yuckiness.

Want to clean it even more? Here’s a secret weapon: vinegar! Yep, the same vinegar you use in your kitchen. Pour some in, swish it around, then rinse the tank with fresh water. Hopefully, this will chase away that bad smell.

Now, if the vinegar trick didn’t work, it might be the anode rod’s fault. This rod is like a superhero for your water—it fights off dirt and keeps your water clean. But over time, it can get rusty. If that happens, you’ll need to pull it out (using something called a socket wrench) and pop in a new one.

What’s the Price Tag for Fresh Smelling Water?

Good news! If you’re just cleaning out the tank, it won’t cost you a dime. But, if you find out it’s the anode rod causing the smell, you’ll need a new one. For a Jayco water heater, these rods made of magnesium usually cost between $15-$20. Not too shabby for fresh-smelling water, right?

So, there you have it! I hope this helps you get your water smelling fresh and clean again. Remember, everyone faces issues like this now and then, so you’re not alone. Happy fixing!

Problem 4: Soot Buildup

Have you noticed some weird black, powdery, or flaky stuff on the outside of your Jayco RV? That’s called soot. And guess what? It could be because of a problem with your water heater.

Why Is There Black Stuff (Soot) on My Jayco Water Heater?

Good question! One big reason could be something called a blockage in the main burner. Think of it like this: the burner is like a stove flame, and sometimes it doesn’t burn things right because there’s stuff in its way. Another reason? A part called the air shutter might be broken.

How to Clean Up the Black Dust?

So, here’s the thing: even though seeing soot might freak you out a bit, it’s not super serious. But, it’s still important to take care of it quickly. Now, I’d love to tell you it’s an easy DIY fix, but this one might be a bit tricky. It’s probably best to call in an expert, like a mechanic who knows RVs and water heaters inside and out.

If it’s the air shutter causing the problem, they’ll swap it out for a new one. But if there’s stuff blocking the main burner and it’s not sitting right, they’ll clean it and put everything back the way it’s supposed to be. Honestly, unless you’re super handy and know a lot about this, it’s best to let a pro handle it.

How Much Will My Wallet Feel This?

Now, because this is a job for the experts, there’s going to be a cost. Depending on where you live and how complicated the fix is, you might end up spending between $100 to $300. I know, it’s a bit of cash, but think about it this way: your Jayco will be back to being its awesome self, without that yucky black dust.

And there you have it! Soot might seem like a big, scary problem at first, but with a little help, it’s totally manageable. Safe travels and keep enjoying your Jayco RV!

Problem 5: Low Water Pressure

Ever hopped into the shower, turned it on full blast, and got a sad trickle instead of a powerful spray? Ugh, right? If you’re having this problem with your Jayco water heater, it means there’s something going on with the pressure. Let’s chat about it!

Why is My Jayco Shower Acting All Shy?

There could be a couple of sneaky reasons why your water isn’t flowing like it used to:

  1. The Water Pump: This is like the heart of your water system. If it’s having a bad day, you’ll get low pressure.
  2. Dirt & Stuff in the Faucets: Over time, things like minerals or tiny bits of debris can build up in the screens of your faucets, stopping the water from flowing freely.

So, How Do I Fix It?

First things first, peek at the water pump. Now, if you’re scratching your head looking at it, maybe it’s best to ring up a mechanic. They can tell you if it’s the pump’s fault and either fix it up or put in a new one.

But if the water pump’s not to blame, it’s time to play detective! Check your faucets. There might be some sneaky stuff built up inside them. If you find any, here’s a cool trick: take out the screen and let it sit in some vinegar. After a while, give it a rinse, put it back, and – voila! – it should be good as new.

Okay, But What’s It Gonna Cost Me?

If you need a new water pump, prices can vary. You might be looking at around $60 to $100. And don’t forget, if you’re getting someone to put it in for you, there could be an extra charge – maybe $20 to $30.

But hey, look on the bright side: once it’s sorted, you’ll be back to enjoying powerful showers in no time! Keep on enjoying your Jayco RV, and don’t let a little water pressure hiccup get you down. Safe travels! 🚿🚐


Jayco RVs have a solid rep for being some of the best campers out there. But, just like with anything, sometimes things can go a bit wonky – especially with the water heater. A bumpy water heater can turn a fab trip into a bit of a downer. That’s why we chatted about all those common hiccups today and how to give them the boot!

The big takeaway? Give your water heater some TLC regularly. It’s a bit like taking care of a plant – a little attention now can save you from bigger headaches (and lighter wallets) later on. Always start by playing detective: what’s the root of the issue? Once you’ve got that, fixing becomes a whole lot easier.

And hey, remember – if all this feels a bit over your head or if things are still acting up after you’ve given fixing a go, there’s no shame in calling in the experts. Whether that’s a quick trip to the dealership or getting a seasoned mechanic on the case, you’ll be back on the road, enjoying all the awesome that comes with your Jayco RV, in no time.

So, here’s to smooth travels, warm showers, and amazing adventures! 🚐💨🛁🌟

Frequently Asked Questions

1. Why is my Jayco water heater not producing hot water?

There could be several reasons why your Jayco water heater is not producing hot water. Some common causes include a faulty heating element, a malfunctioning thermostat, a gas supply issue, or a problem with the pilot light. It is recommended to check these components and consult the user manual for troubleshooting steps.

2. How can I fix a leaking Jayco water heater?

If you notice water leaking from your Jayco water heater, it is important to address the issue promptly to prevent further damage. First, check the temperature and pressure relief valve to ensure it is not faulty or loose. Tighten or replace it if necessary. If the leak persists, inspect the drain valve and connections for any signs of damage. Repair or replace any faulty parts accordingly.

3. What should I do if my Jayco water heater keeps tripping the circuit breaker?

If your Jayco water heater is repeatedly tripping the circuit breaker, it may be due to an electrical issue. Start by ensuring that the heater is not overloaded by other appliances on the same circuit. If the problem persists, there may be a wiring problem or a short circuit in the heater. In such cases, it is recommended to seek professional assistance for repairs to avoid any electrical hazards.

4. Why does my Jayco water heater produce a foul odor?

If your Jayco water heater has a foul odor, it is likely caused by bacteria growth in the tank. This can happen when the water is not regularly used or when the temperature is set too low. To eliminate the odor, you can try flushing the tank with a mixture of water and hydrogen peroxide. Follow the manufacturer's instructions or consult a professional plumber for guidance.

5. How can I increase the water temperature in my Jayco water heater?

If you find that the water temperature in your Jayco water heater is not reaching your desired level, there are a few steps you can take. Firstly, check the thermostat settings on the heater and adjust them accordingly. If the temperature still does not increase, you may need to check the heating element for any faults or consider replacing it with a higher wattage element. It is recommended to consult the user manual for specific instructions.

6. What maintenance steps should I take to keep my Jayco water heater in good condition?

To keep your Jayco water heater in good condition, regular maintenance is necessary. Some essential steps include flushing the tank annually to remove sediments, inspecting and cleaning the burner assembly, checking the anode rod for corrosion, and ensuring proper ventilation around the heater. Refer to the user manual for a comprehensive maintenance checklist and follow the recommended schedule.

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