RV and motorhome owners need a reliable thermostat to stay comfortable while traveling. In addition, many RV owners travel in multiple climates, so having control over your climate is vital to Your travel situation.
You don’t want to worry about running out of heating or cooling in your RV while you’re on a camping trip. Unfortunately, if the E7 code pops up on your Dometic thermostat, keeping a consistent temperature throughout your RV could be difficult.
Dometic thermostats are a reliable and popular choice among RV owners. However, that doesn’t mean they’re immune to problems. Please continue reading to learn what to do when the E7 code pops up on your Dometic thermostat.
E7 Code on Dometic Thermostat
How Dometic Thermostats Work
It would be best to have a professional installer Dometic thermostat so that it hooks up to your AC and furnace easily. Then, operating the device goes as follows:
- Set your temperature preferences: you’ll need to adjust your preferences based on where you travel and what time of year. For example, if you’re traveling during winter, you’ll want to activate your heat settings.
- Choose Fahrenheit or Celsius: Choose the easiest temperature preference you recognize. For example, some people read Celsius more easily, while others prefer Fahrenheit. With these thermostats, you have the option to read either.
- Use mode preferences: You can choose three modes on your Dometic thermostat. Heat, fan, or cooling modes are the most commonly used among RV drivers.
As you can see, using your Dometic thermostat is easy. The user-friendly aspects of this device make it a popular option in the RV world.
What is an E7 Code on Your Dometic Thermostat?
If you receive an E7 error code on your Dometic thermostat, there’s been a power interruption in your RV. Without electricity, there’s no way to control the temperature inside your vehicle. This can be a distressing experience when you’re traveling during inclement weather.
Fortunately, there are plenty of troubleshooting methods you can go through to get rid of this error code. After you clear your E7 error code, you should have no problems using your Dometic thermostat as you normally would.
Common Causes of the E7 Dometic Thermostat Code
The most difficult part about troubleshooting your Dometic thermostat when you have an E7 error code is identifying the cause of this error. Plenty of things can contribute to this problem, and you’ll need to use the process of elimination to discover the culprit.
Then, you’ll need to work through several troubleshooting methods to eliminate this error.
Below, we will discuss the most common causes of the E7 error code on your Dometic thermostat. We recommend going through these potential problems to save time troubleshooting your device. For example, going out of order could tack on unnecessary time you spend identifying the problem.
1. Interruption in Electricity
Unfortunately, the most common reason people experience the E7 error code is that their electric connection has been interrupted. It can be difficult to maintain a consistent electric supply in your RV, which will impact how well your appliances work. In addition, your HVAC units in the RV rely on this power supply.
- Shore power disruption: Shore power electricity is susceptible to power surges. Many RV owners that use shore power add circuit breakers to their RV to protect their appliances. Your power can automatically shut off when shore power experiences a surge.
- Solar power interference: If you rely on solar panels to provide electricity for your RV, you need to keep them in great condition. Damage to your solar panels can disrupt your electric supply.
- Generator problems: Generator problems are some of the most common electrical issues RV owners experience. Many people rely on their generators to supply enough electricity to their Dometic thermostats.
The factor that causes your electric disruption depends on the type of electricity you use in your RV. You’ll need to follow troubleshooting methods for your RV power supply before working through the rest of your troubleshooting options.
2. Outdated Thermostat
Most Dometic thermostats last for around 12 years. Unfortunately, every device you own has a lifespan that can make your devices outdated. If you have an outdated thermostat, you’ll need to replace the device entirely instead of replacing parts.
You can identify how old your Dometic thermostat is based on the age of your RV. Many people buy used RVs, so tracking how long devices have been in the vehicle can be difficult. It would be best to assume that the Dometic thermostat has been in the RV since its manufacturing.
3. Broken Parts
Sometimes wiring can get disconnected throughout your RV, impacting your Dometic thermostat. If things aren’t wired correctly, it’s impossible to regulate the temperature in your RV. These connections can come loose while driving, especially if you’re operating the vehicle on rough terrain.
Broken parts can also occur when there are environmental factors involved. For instance, it’s no secret that children like to wreak havoc on their environment. When you have children in the RV, you’re more susceptible to damage to your thermostat. They could accidentally hit the device while playing and break part of it.
Troubleshoot Your Dometic Thermostat
Now that you understand the most common causes of the E7 code on your Dometic thermostat, it’s time to discuss troubleshooting methods. These methods will resolve most of your Dometic thermostat problems, especially if you have the E7 code.
Power interruptions are extremely common among RV owners, and it doesn’t have to be the end of your thermostat’s lifespan.
1. Adjust Your Breaker
The first thing you should do is check the breaker box in your RV. You should flip switches in this breaker box to see if it helps power up your device. Have someone monitor the thermostat while you flip switches to ensure that you flip the correct ones.
Adjusting your switches without help can make it difficult to determine which switches operate your Dometic thermostat. Fortunately, you do not need a professional to adjust your breaker box. Your breaker box protects your appliances from power surges that could otherwise ruin multiple devices simultaneously.
2. Check Your Wiring
After you adjust your breaker switches, it would be best to check the wiring throughout your appliances for any damage. Sometimes wires come loose while you’re driving or receive environmental damage. You can replace any wires that have been damaged so that your device is working properly.
You’ll want to check the wires to your electric supply, fuse box, and Dometic thermostat. If any of these wires are damaged, it could cause your thermostat to malfunction and give the wrong temperature or an E7 code.
3. Check RV Generator
One of the most common reasons people experience the E7 code on their Dometic thermostat doesn’t have to do with that device. Follow the steps below to check your generator for any problems that could cause a power interruption.
- Battery voltage
- Oil problems
- Lack of fuel
- Improper hookups
If you notice any of these problems on your RV generator, you’ll want to resolve them as soon as possible. The E7 code will not go away on your Dometic thermostat until you fix your power supply. Many rely on their generators to provide electricity to their appliances while traveling.
4. Turn Off Appliances
Finally, if you experience the E7 code on your Dometic thermostat, it could be because there are too many loads on your power supply. Try shutting off a few appliances in your RV to see if that resolves your problem. You may also need to restart your Dometic thermostat after you turn off some of your appliances to reboot the system.
It would be best to check how many volts your appliances consume before running them simultaneously. Neglecting to pay attention to this could put too much work on your generator and damage your power supply. Of course, the last thing you want to worry about is your generator giving out on you in the middle of your road trip.
When To Replace Your Dometic Thermostat
Unfortunately, there are situations where it’d be better to replace your Dometic thermostat instead of troubleshooting it. If you’ve tried all of our troubleshooting methods to no avail, it could be time to purchase a new thermostat. The good news is that compared to other RV appliances, a thermostat is affordable.
You should also replace your Dometic thermostat if you experience problems often. Even if our troubleshooting methods work for you, replacing this device before it’s permanently damaged could save your next road trip. Even though power interruptions are common, you shouldn’t deal with the E7 code on a Dometic thermostat often.
Final Thoughts
If you notice the E7 code on your Dometic thermostat, a power interruption is causing it not to work. We recommend checking your power supply before messing with your thermostat because the issue usually lies with your electric device.
For example, if you run your RV on a generator, you’ll need to check the generator for any problems before trying other troubleshooting methods.