Common Jayco Water Heater Problems & Solutions (2022)

If you drive an Rv, you already know the thrill of having it. These campers will give you an enthralling outdoor experience. Jayco is a brand that makes excellent campers, but just like other brands, they are also prone to some problems, and one such problem is the water heater problem.

Even though Jayco is a very reliable brand of water not heating up, bad smelly water and tank leakages are a few of the problems they can suffer from. If you do not solve these water heater issues in time, these can lead to even more significant issues.

Thus, if you own a Jayco RV and suffer from water heater issues, we are here to help you. Today in this guide, we will discuss all the common Jayco water heater problems & solutions.


  • What Are The Common Problems With Jayco Water Heater?
  • How Do You Troubleshoot and Fix Jayco Water Heater Problems?
    • Problem 1: Water Not Heating Up
    • Problem 2: Leakages
    • Problem 3: Bad smelly water
    • Problem 4: Soot Buildup
    • Problem 5: Low Water Pressure
  • Conclusion

What Are The Common Problems With Jayco Water Heater?

Below, we will list all the common problems Jayco water heaters can suffer from. Read on to know more.

  1. Water not heating up – Source
  2. Leakages – Source
  3. Bad smelly water – Source
  4. Soot Buildup – Source
  5. Low Water Pressure – Source

How Do You Troubleshoot and Fix Jayco Water Heater Problems?

So far, we have seen the potential water heater problems in brief. Now we will look at each of these problems in detail, along with their symptoms and quick fixes.

Problem 1: Water Not Heating Up

Sometimes when you see that even after you turn on the tap, there is no hot water, which means the water is not correctly heating up. Additionally, neither the tank nor the hot or cold lines will receive any water, and the tank didn’t fill.

What Causes Water Not Heating Up On Jayco Water Heater?

There can be many reasons for the water not heating up in the Jayco water heater. The main reason most of the time is that the bypass valve is closed and causing issues. Another common reason is that the thermostat setting is altered or faulty, causing the water not to heat up.

(Video) RV Camper Water Heaters: Tips & Troubleshooting

How To Fix Water Not Heating Up On Jayco Water Heater?

As we have said, there can be two probable reasons for your water not heating up, so you will need to troubleshoot the reason first.

Fixing Bypass Valve

The heater is shielded from the coolant by a bypass valve. Before you may store additional water for showering, you must totally rinse out the heater if antifreeze somehow manages to get inside.

So, check properly if the bypass valve is turned off. If it is turned off, then coolant can enter inside the water, causing it to cool down. So make sure to turn on the bypass valve.

Fixing Thermostat

The thermostat controls the temperature of the water, and if there is a fault in it, you will need to fix it. You will need a multimeter to check the thermostat properly.

Use your flathead screwdriver to remove the thermostat unit’s top and bottom access covers. There will be insulation inside with a flap with a cutout for the thermostat.

Set the top thermostat to its highest setting. Now take the multimeter and set RX1 on the multimeter. Put just one probe on the connector on the bottom left. Put the second-meter probe on terminal screw number 1, which is located above terminal number 2.

You ought to receive a value of 0. The thermostat needs to be repaired if you receive no reading at all. It is better to consult an electrician to replace the thermostat properly as many wirings need to be connected.

How Much Does It Cost To Fix Water Not Heating Up On Jayco Water Heater?

Sometimes you can simply fix your thermostat, but if the problem is more severe, you will need to replace it. Usually cost, and replacement of the thermostat can be anywhere from $150-$200.

Problem 2: Leakages

Sometimes, leakages are significant problems faced by water heaters. Suppose you see water leaking from pipes connecting the water heater to everything else. Also, if you notice water underneath the shower tray, then there is a leakage.

(Video) No Hot Water in Your RV?! Try This First! || DIY RV & RV Newbies

What Causes Leakages On Jayco Water Heater?

There are a lot of different possible reasons for leaks. A broken temperature and pressure (T&P) relief valve and too much pressure inside the heater are the primary causes.

Another major cause of leaks is overheating. The leak is often not inside the water tank but in the plumbing pipes. The water storage tank can also leak from the top, and you find a wet top.

How To Fix Leakages On Jayco Water Heater?

To fix leakages in the water tank, you will first need to be sure about the source of the problem.

Temperature and Pressure Valve

Place a bucket beneath the above pipe, release the T&P valve, and clean out any debris. If the valve still leaks, then the primary source of the leakage is the valve, and you will need to replace it.

Overheating and extra pressure

To get rid of overheating and extra pressure, you will have to alter the settings in your thermostat. Go to your thermostat unit and check the current temperature. After that lower, the temperature and your leakings should stop.

Plumbing Pipes

Check the plumbing pipes properly and try to find out any leaks. If you can spot a leak, try to close down that leak using a leak stopper. However, if the leak is too big, then it is better to replace the whole pipe.

Leak in Storage Tank

If the leak is in the water storage, then it is mostly due to bad o-rings. Clean the tank very carefully and remove any dirt from the tank and check if any o-rings have gone bad. If there is a damaged o-rings, get a new one and change it.

How Much Does It Cost To Fix Leakages On Jayco Water Heater?

If you need to replace the temperature and pressure valve, then it can cost between $150-$550. O-rings are pretty inexpensive, and they will only cost a few cents.

Problem 3: Bad smelly water

When you turn on your tap or shower, the water will smell like rotten eggs, and that’s horrible. This pungent smell will keep coming from your water, indicating there’s an issue with the water heater.

(Video) RV Low Hot Water Pressure or No Hot Water Pressure Water Heater Check Valve May Be The Problem.

What Causes Bad Smelly Water On Jayco Water Heater?

Bad smelly water is annoying, and the reason for this is sometimes very simple; your tank may be filled with debris and toxic particles, which are causing this bad pungent smell in the water.

Another possible reason is the anode rod below the heater may be corroded and needs replacement.

How To Fix Bad Smelly Water On Jayco Water Heater?

If the smell is only due to dirt and debris, then all you need to do is clean the tank properly. Flush all the tanks from the water heater tank and make sure the water has cooled down before you do this.

Take some vinegar and use it to clean your tank further, and after that, rinse the tank properly with fresh water. Doing this will take away all the smell.

If the water still smells bad after cleaning with vinegar, then take a look at the anode rod. The anode rod catches all dust and dirt, keeping the water fresh, and as a result, it gets rusted. So, if this is the case, take out the rod using a socket wrench and replace it with a new one.

How Much Does It Cost To Fix Bad Smelly Water On Jayco Water Heater?

Since you can easily clean the tank yourself, it doesn’t cost any money at all. However, if the anode rod is corroded, you will need to buy a new anode rod for your Jayco water heater. Magnesium anode rods can cost you between $15-$20.

Problem 4: Soot Buildup

If you notice soot building up on your Jayco’s exterior, then there can be some issues with the water heater. You will see some deep black powdery or flaky stuff on the RV.

What Causes Soot Buildup On Jayco Water Heater?

One of the most crucial factors contributing to soot buildup is Blockages in the main burner. This will cause the main burner to misalign, and as a result, it doesn’t exactly burn the things it is supposed to. Soot buildup can also be caused by a broken air shutter.

How To Fix Soot Buildup On Jayco Water Heater?

Even though soot buildup is not common and not that serious, you should still fix it as soon as possible. This is one such problem that is hard to fix by yourself, and you need to hire a professional mechanic for this work.

(Video) Hot Water Heater RV - solution to fix broken hot water

If the air shutter is broken, it needs to be replaced. However, if there are blockages in the main burner due to misalignment, then you will have to clean the blockages and align the burner back, which can be a daunting task. So it is better to consult a professional for the work.

How Much Does It Cost To Fix Soot Buildup On Jayco Water Heater?

Since this fixing process must be done by hiring a maintenance specialist, you can expect to pay between $100-$300 depending on the degree of damage and your location.

Problem 5: Low Water Pressure

Low water pressure is also a quite common problem with Jayco water heaters. For instance, you turn on the shower and turn the valve to the max, but the water pressure is still low. If this happens, then there must be issues with some internals of your water heater.

What Causes Low Water Pressure On Jayco Water Heater?

There can be a few different reasons which can cause low water pressure on Jayo water heaters. The first problematic zone is the water pump; if there is a problem with the water pump, there will be low water pressure through the faucets.

You can also find minerals along with dirt and debris buildup inside the faucet’s screens, which can block the regular flow of water.

How To Fix Low Water Pressure On Jayco Water Heater?

At first, you will need to check the water pump for any problems. Well, it is kind of complicated to check the water pump by yourself, so it is better to call a mechanic to get the pump checked. Replace or repair it if needed.

If the water pump is not at fault, then there must be blockages inside the faucets or the pipelines. Carefully open the faucets and examine them for minerals or debris buildup. If you find any, then soak the screen in vinegar, and they should be clean as new.

How Much Does It Cost To Fix Low Water Pressure On Jayco Water Heater?

The replacement cost of an RV water pump can cost you in a range of $60-$100, depending on the type of pump you are buying, plus the installation charge of around $20-$30.


Jayco Rvs are one of the most reliable campers in the market, but the water heater can create serious problems at a time. These issues can ruin a pleasurable trip for you. Hence, today in this guide, we discussed all the common problems of Jayco water heater problems & solutions.

(Video) Rv water heater bypass

Regularly maintaining the water heater tank is important to save yourself from the trouble of fixing them later on and spending money. At first, try to find the exact source of the problems before going with the fixing step.

Even after reading this guide, if you cannot detect the problem and fix it yourself, it is better to visit the dealership or hire a professional mechanic.


What is the most common problem with water heaters? ›

Water leaks are perhaps the most common type of water heater issue you'll face. Any water heater will start to leak eventually, as by nature water will eventually corrode your tank and create microscopic cracks or fractures.

How do I reset my RV hot water heater? ›

You just turn the little button here and it's usually spring-loaded.

Why is the hot water not working in my caravan? ›

More often than not, hot water systems stop working because of a fault in the gas or power supply. If your HWS runs on gas, your other gas-powered appliances can give you a clue as to whether gas is reaching your system. If they seem to be malfunctioning as well, check the main regulator pressure.

Where is the reset button on a hot water heater? ›

How To Reset The Reset Button On a Electric Hot Water Heater Pretty Easy

What trips the reset button on a hot water heater? ›

The high resistance caused by a loose wire produces a substantial amount of heat that can eventually cause fires. If there is a loose electrical connection within your water heater's system, your reset button's thermometer can trip (regardless of the water's temperature) if it picks up the heat from that loose wire.

Do RV water heaters have a reset button? ›

Resetting your RV's hot water heater is a simple process that can be completed in under five minutes. First, locate the reset button on your water heater. It is usually red and located near the thermostat or behind a removable metal panel. Once you have found the button, press and hold it for a few seconds.

How do I troubleshoot my RV hot water heater? ›

RV Water Heater Troubleshooting Tips
  1. Refer to Your Water Heater Manual.
  2. Check Bypass Valves.
  3. Check Your Outdoor Shower.
  4. Check Your Propane Levels.
  5. Check The Anode Rod (If Your RV Water Heater Has One)
  6. If Electric, Check The Heating Element.
  7. Faulty Thermostat.
  8. RV Water Heater Check Valve Malfunction.
19 Feb 2021

Why Is My RV water heater not getting hot? ›

The reasons could be a malfunctioning thermostat, a broken or damaged dip tube which would allow cold water to mix with the hot water at the top of the water heater, or having the water temperature set too low. Sometimes it just boils down to having a water heater tank that's too small for your needs.

How do I use my Jayco hot water system? ›

Guide to your Jayco RV: How to use the hot water system - YouTube

How does the hot water system work in a caravan? ›

A caravan electric hot water system is a water heater that is powered by electricity. It instantly heats water as it passes through the tap. You can have readily available warm water for washing hands, washing the dishes, or showering.

How do you test a hot water element in a caravan? ›

Water Heater Not Heating? Heating Element Testing - YouTube

How do I know if my hot water heater anode is bad? ›

How to Tell If Your Anode Rod Is Bad. Smelly or discolored hot water is the biggest sign that something is wrong with your anode rod. When your anode rod has completely corroded, it can no longer protect your hot water heater lining. Your anode rod will go bad every five years or so.

Why is the water not getting hot? ›

What does it mean if the water heater is not producing hot water? It is possible that the circuit breaker tripped or a fuse blew, so check those first if you are not getting hot water from your water heater. If that's not the issue, then it could be that the heating element has burned out and needs to be replaced.

How do you fix sediment in water heater? ›

4 Ways to Remove Sediment from Your Water Heater
  1. Flushing Your Unit. This technique is good for your unit twice a year to prevent water heater sediment build up. ...
  2. Vinegar Soak. ...
  3. Maintain Temperature. ...
  4. Water Softener Installation.

How long do you hold the reset button on a hot water heater? ›

It depends on the size of the tank, but with any unit, you should be able to get in a hot shower with gas water heaters within 30-40 minutes and with electric tanks, about 60-90 minutes.

How do I reset my heater? ›

How to Reset an Electric Furnace
  1. First, turn off the power supply to the furnace by turning off the breaker in the circuit box.
  2. Locate the reset button on the furnace and press it to reset the furnace. ...
  3. If the button is popped up, press it down.
  4. Return the cover to the blower compartment and turn the power on.
17 Nov 2020

What do you do when your hot water is not working? ›

No Hot Water? Here's How to Fix It
  1. Check the circuit breaker. ...
  2. Reset your water heater. ...
  3. Find out if other people in your household were using hot water. ...
  4. Look for leaking water around your tank. ...
  5. Check for water in the compartments on your water heater. ...
  6. Turn the gas on. ...
  7. Check the pilot light.
30 Sept 2020

Why do I have to keep pressing the reset button on my water heater? ›

In some cases, the water heater reset button will repeatedly trip. This is a warning sign of a larger issue such as a faulty thermostat, loose wiring, corroded parts, a grounding problem, or a malfunctioning high limit switch.

How do you check a hot water heater thermostat? ›

Water Heater Not Heating? Thermostat Testing - YouTube

How do I turn on my electric water heater in my RV? ›

How to Turn On an Electric RV Water Heater
  1. Ensure their is water in the hot water tank before proceeding.
  2. Locate your hot water heater access panel, typically on the outside of your RV, and remove it.
  3. Find the RV water heater on and off switch on the panel. ...
  4. Flip the switch to the on position.
15 Feb 2022

How do you reset the gas valve on a water heater? ›

How to reset gas water tank pilot light - YouTube

How long does it take for RV water heater to heat up? ›

RV water heaters typically take 20 minutes to heat up the water. It also depends on how many gallons of water is in it if there are 10 gallons it can take longer to heat up.

How do you clean an RV thermocouple? ›

In cleaning a thermocouple, you need some steel wool or 60-grit sandpaper, and a cloth. First, turn off the gas supply, unscrew the thermocouple and then clean it with steel wool or sandpaper then wipe down with a cloth to remove residue. I clean our thermocouple every six months to avoid getting it coated with soot.

Why does my RV heater not work? ›

If the furnace runs, but you aren't getting any heat, check to see if the propane is turned on. If the furnace still doesn't run, try lighting a stove burner. This will ensure the stove is getting propane. If the pilot won't light, check to be sure you have propane.

How do you test a thermocouple on a camper water heater? ›

How To Perform an Open Circuit Test
  1. Start by switching your multimeter to millivolts.
  2. Bring one of the test leads to the side of the thermocouple.
  3. Place the other lead to the end of the thermocouple that connects to the gas valve.
  4. Bring a flame to the opposite end of the thermocouple.

Why is there no hot water in my trailer? ›

A lack of hot water can oftentimes be the result of a loss of power with the electric water heater. You'll want to first find your mobile home water heater location, then check your electric water heater's circuit breaker. Circuit breakers are known to trip, so your fix could be as simple as resetting the breaker.

Where is the check valve on a RV water heater? ›

Also, while you're out there on the outside of the water heater, be sure the drain plug is not leaking. The check valve(s) (you may have two), however, are located on the back of the water heater, accessed from inside the coach.

Can I run my RV water heater on gas and electric at the same time? ›

As mentioned before, you can choose to use both the propane and electric options together if you happen to have a heater with both. Doing so will cut down a bit on the time it takes to warm your water.

Where is the Jayco water heater bypass valve? ›

How To Locate RV Water Heater Bypass Valves - YouTube

How do you drain a jayco hot water heater? ›

Jayco JayCares - RV Water Heater Basics - YouTube

How big are jayco water tanks? ›

Jayco Fresh Water Tank – 90 Litre – 1270 x 400 x 210mm.

Do you leave the water heater on in a caravan? ›

There is no reason not to leave it on all day and night, as long as you have made sure the tank is full before switching it on. The more important item to consider is the gas side of the heating.

How long does a caravan hot water system last? ›

You can expect an electric hot water system to last on average between 10 and 15 years.

How do you get rid of an airlock in a caravan? ›

The drain down valve is closed i.e. boiler/Alde (yellow valve on most vans).
  1. Turn on the pump.
  2. Open cold tap on kitchen sink and run until flowing constantly.
  3. Open cold tap on vanity sink and run until flowing constantly.
  4. Open cold tap on shower and run until flowing constantly.
  5. Go back to kitchen sink.

What causes a heating element to burn out in a water heater? ›

Water heater elements burn out because of sediment buildup on the heating elements. It can also burn out due to a power surge, air pockets inside the tank, or wiring or electrical faults.

How long do water heater elements last? ›

Replacing a Hot Water Heater Element

Water heaters typically have a life span of 6 to 10 years, so if your heater is older, you can expect that it'll be experiencing problems sooner than later.

Will a water heater work with one element? ›

So, can you run a water heater with only one element? Yes, a water heater can still run if the bottom element quits. However, the water heater won't run efficiently and likely won't produce enough hot water to satisfy your family's needs running on just the top element.

How many years does a water heater last? ›

Typically a residential hot water heater lasts between 6 and 13 years. Beyond 12 years, you are on borrowed time!

Why is my heating working but no hot water? ›

In the case that your radiators are heating up but there's no hot water coming from the taps, then the most likely cause is a broken diverter valve. Combi boilers are fitted with a diverter valve, that opens and closes depending on whether hot water needs to be sent to the radiators or taps.

Why is my hot water tank not heating? ›

Finally, check the thermostat to make sure it's receiving power. Water is warm, but not hot enough – If your water isn't getting hot enough, the cause could be an undersized water heater, crossed hot and cold connections, or a faulty heating element or thermostat.

How do I check my water heater? ›

How to Test Your Water Heater Element - YouTube

How many showers can you take with a 50 gallon water heater? ›

50 gallon water heater

It is such a common size because it can supply hot water for 3 – 5 people. Considering an average shower uses 17.2 gallons of water you can typically have enough hot water for up to five people to take a shower within an hour.

Can you still use water if water heater is off? ›

If you have a conventional tank-style water heater powered by electricity, your water heater will stop heating water in the event of a power outage. However, water that has already been heated up to the point when the power goes out will remain hot for some time while stored in the insulated tank.

Why is my hot water going cold? ›

Hot Water Goes Cold Quickly Because Of A Burned out heating element. Faulty or burned out heating elements is one of the main reasons why your hot water goes cold quickly. Old or burned out elements account for the reduction of hot water and will cause your hot water to go cold quickly or not have any hot water at all.

What to do if there is no hot water? ›

No Hot Water? Here's How to Fix It
  1. Check the circuit breaker. ...
  2. Reset your water heater. ...
  3. Find out if other people in your household were using hot water. ...
  4. Look for leaking water around your tank. ...
  5. Check for water in the compartments on your water heater. ...
  6. Turn the gas on. ...
  7. Check the pilot light.
30 Sept 2020

Why is there no hot water in my shower? ›

Check Other Faucets in the House

If the temperature of the hot water cools quickly, you may have a burner problem with your water tank. If there is no hot water coming out at all, it could be a faulty dip tube. Now, if all the other faucets have running hot water, then the issue may lie in your shower components.

Why is my hot water heater only lukewarm? ›

If your electric hot water heater is only lukewarm, then it's obviously not due to a gas issue. It could, however, be due to a power issue. In most cases, this is because the power source has been cut, most commonly because of a tripped breaker. Fix this issue by flipping the appropriate breaker back to “On.”

How do you clean sediment out of a water heater? ›

4 Ways to Remove Sediment from Your Water Heater
  1. Flushing Your Unit. This technique is good for your unit twice a year to prevent water heater sediment build up. ...
  2. Vinegar Soak. ...
  3. Maintain Temperature. ...
  4. Water Softener Installation.

How do you clean a thermocouple on a water heater? ›

You can use Emery cloth sandpaper to gently clean any debris or build-up from the end of the thermocouple. If present, you should also clean off any corrosion where the power wire connects to the thermocouple terminal. Be aware, you may need to detach the thermocouple from the burner assembly to clean it thoroughly.

How long do you hold the reset button on a hot water heater? ›

It depends on the size of the tank, but with any unit, you should be able to get in a hot shower with gas water heaters within 30-40 minutes and with electric tanks, about 60-90 minutes.

Should a hot water heater be warm to the touch? ›

Water Heater Is Hot to Touch

Even though it's designed to boil water, your water heater shouldn't get so hot that you can't touch it. Water heaters are designed to be well insulated so that heat stays in. A water heater that gets too hot could have one of several issues, including: A blocked flue.

How do I know if the pilot light is out on my water heater? ›

The pilot light on most water heaters is located at the base of the unit, below the gas control valve. Open the access panel or door to the burner chamber and look inside. There, you'll find the pilot light tube, which should have a steady blue flame. If you don't see the flame, the pilot light is out.


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