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Airxcel Thermostat Troubleshooting: 4 Issues Discussed in Detail

Airxcel thermostat troubleshooting might be the way to go if your device is not turning on after a while. This article will examine four common issues regarding why your thermostat may fail. And also easy and effective advice for the remedy to these problems. Let’s begin!

Definition of Airxcel Thermostats and Their Uses

Most RVs still use analog thermostats. However, switching to a digital one for more precise temperature regulation and a more streamlined design it’s a good idea. If you decide to resell your RV, you are more likely to get a better value if it has a digital thermostat.

What Is Airxcel Thermostat?

Airxcel is a top choice regarding RV air conditioning, heating devices, and appliances. There are also digital thermostats that work with most major HV and AC systems. The thermostats can be purchased from several places, including:

  • Airxcel’s website
  • Supermarkets
  • Amazon 

But after a while, the Airxcel Thermostat may start malfunctioning. Let’s examine some of the causes of its potential malfunctions.

Reasons Why Your Airxcel Thermostat May Be Malfunctioning

Just like any other installed device, Airxcel may experience malfunctions. Something about waking up in the morning to a chilly rig is genuinely not appreciated.

A thermostat’s system may malfunction for several reasons, and there are simple solutions to a broken Airxcel thermostat. First, double-check the following details before you determine what to do.

Reasons Why Your Airxcel Thermostat May Be Malfunctioning

1. Defective Wiring

Defective wiring is responsible when the screen turns dark with no backlight. To access the six cables of varying colors that run from the electrical board through the wall:

  • Pull the gadget from the wall.
  • Examine its backside.

It’s common for lines to be improperly attached or connected to the circuits. If that’s the case, reconnect the cables. If there are no results after that, and you’re confident the issue is with the wiring, the fault is likely inside the wall. You’ll need to do next:

  • Pull the wires.
  • Replace the wires, as the hole they pass is relatively tiny.

Note: If the need arises, you should contact the electrician so that he can reinstall the wires.

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New Thermostat Not a Part of the App

Use your smartphone or another device to manage a recently installed digital thermostat from the original website.

  • You’ll need to pair it with the RV Weather app.
  • Your thermostat might not activate or function in the app because it hasn’t been added.
  • It works similarly to Bluetooth in that you need authentication to access one system from another.

Where can you get it?

You can find RV Climate in the browser App Store or Google Play and use it to connect your thermostat. Proceed by following the steps below:

  • Start the application and go to “add new thermostat” after installing it
  • To get the pairing option, press simultaneously and hold the up and down keys
  • Return to the application and choose “pair new thermostat.” You can control it remotely 

2. The Thermostat Is Still Asleep

Your Airxcel thermostat may suddenly shut down because:

  • It is still asleep
  • You may also accidentally touch the mode button after pressing the Up or Down keys

However, the problem might be with the sensors. The sensors beneath the keys may not respond to touch. This is common in old thermostats.

3. A Fuse That Is Blown and Tripped Circuit Breaker

A circuit breaker tripping may be why the thermostat is not receiving power. In such a case, you should consider the following:

  • Turning the breaker off for about five seconds before turning it back on will reset and reinstall the connections.
  • Inspecting the electrical system for a potential power failure to prevent the reoccurrence of the same issue again.
  • Taking care of those potential issues lessens the likelihood of its failures.

Nevertheless, you should be prepared for anything. This video will guide you through.


What is next after the malfunctioning of a device? Let us look at the thermostat troubleshooting steps you should take in case of device malfunction. 

Troubleshooting Steps You Should Take Upon Airxcel Malfunction

In case your screen turns blank or the thermostat malfunctions, there are a few troubleshooting steps you ought to be familiar with. The steps include the following: 

Troubleshooting Steps You Should Take Upon Airxcel Malfunction

1. Problem With Car’s Heater Thermostat

The thermostat not working correctly is these gadgets’ most frequently reported problem. It is highly recommended that you take your time and adequately follow the troubleshooting procedures. 


Most Airxcel Thermostats provide user interfaces that allow for setup and adjustment. While this greatly simplifies using the system, it also means that any mistakes on the control panel will render your gadget useless. Therefore, you should:

  • Verify the settings on your thermostat and adjust it as needed
  • Put in a number that’s warmer than the ambient temperature.
  • Increase the fan speed on your gadget.

You may find that despite the thermostat being set correctly, it still does not work. This may be because of the fan being switched off. Ensure that it is on and that the settings are okay.

2. Set the Temperature to Your Liking 

The temperature should be set according to the season.


Try this:

  • During summer, try setting it 5 degrees lower than the outdoor degrees
  • In the winter or on a cold night, increase the degrees by five degrees warmer than the outdoor degrees.

There is a clicking sound when you adjust it. Air will flow out of or into the supply register vents after a few minutes. All this is dependent on your thermostat’s temperature setting.

3. The Vents Are Not Discharging Air

Another problem with your Airxcel Thermostat might be that even though the device seems to operate normally, no warm air flows from the vents. This might be because the vents could be clogged.


Therefore, you must always perform routine maintenance on your car. This entails:

  • Regular cleaning to prevent dust buildup that could damage the equipment
  • Clear the vents once or twice yearly

If you need help cleaning your car thoroughly, consult a professional.

4. Replacing the Battery for Your Thermostat

Changing out the thermostat’s battery should fix the battery-related problems. If the issue persists, examine the wiring for any problems.


To avoid a breakdown because of problems associated with the battery, you should:

  • Replace the batteries annually
  • Keeping it in good working order

Replacing the batteries is the best solution if an upgrade of the thermostat is not on your budget.

Replacing the batteries is the best solution if an upgrade of the thermostat is not on your budget

5. Get Some Air Into The Thermostat

There are mechanical thermostats incorporated in older RV models. A little handle on the thermostat mainly controls the interior temperature of the RV. Most of these devices experience issues due to dust accumulation.


If the device malfunctions, get a can of pressed air and blow out the dust. The highly pressurized air will force out the dust that might be accumulated.

6. Modify The Temperature Predictor

The ‘heat anticipator’ in a mechanical thermostat is an electrical resistor. It plays a crucial part in determining the optimal weather for the space. The furnace is turned on or off when the optimum conditions are almost reached.

The heat anticipator activates or deactivates the heating system before reaching the set temperature.


Incorrect heat anticipator alignment limits the range of the cycling of the furnace. You should therefore:

  • Make adjustments
  • Ensure the furnace runs for three hours after making the adjustments.

Failure to do so will make it impossible to achieve the desired condition.

7. Make Sure the Electricity and Wires Are Working

If the thermostat is acting up, check for any power interruptions. An issue with the battery will manifest as a blank display on the screen. If it runs on batteries, replacing the battery should fix the problem.


If the problem still needs to be fixed after they are replaced, check for loose wirings, and make sure to switch it off before checking. These often get detached or broken.

  • Replace any frayed or damaged wires immediately and cover them.
  • Try re-establishing the connection if there is a loose one. If any wires had fallen loose, reattaching them securely should resolve the problem.

Measuring the current with a voltmeter is possible, although doing so is risky. It is recommended that you contact a professional who is familiar with the procedure of installing such gadgets.

If the thermostat is acting up, check for any power interruptions

8. Get Rid of the Grime and Rust 

The thermostat’s insides may start to get grimy over time.


Different thermostats have their unique cleaning systems. Start by:

  • Unscrewing the anchor screws on the side to remove the lid. Cleaning can’t begin until some items are removed from the wall.
  • Once you’ve gained access to the thermostat’s interior, you can use a vacuum hose to remove dust and debris.
  • The thermostat’s coil, too, probably has a layer of grime on it. Use a gentle brush on that.

It’s essential to keep it free of dust and other particles so that the contacts can make and receive energy.

It's essential to keep it free of dust and other particles so that the contacts can make and receive energy

9. Temperature Control Must Be Adjusted

Once electronic equipment stops functioning, it requires a reset. A digital thermostat can be made operational again by simply resetting it.

The gadget is responsible for communicating with the heating and cooling unit of the AC. A power interruption could cause it to be suddenly shut, disrupting the service of your RV.


Therefore, after such power outages, a reset is required. Resetting the gadget can be done in a variety of ways, depending on the specific model:

  • Putting the battery backward for a few seconds is the most usual solution. 
  • Pressing the hidden button with a pin or paperclip. 
  • Disconnecting the breaker from the thermostat for 30 seconds.

The faults associated with thermostats can be frustrating if you don’t know how to troubleshoot them, but with some expertise, you’ll be able to handle them easily.

RV Thermostat Replacement Instructions

If you have discovered that your gadget in the RV is malfunctioning, you will need to replace it, and here’s how to do it:

  • Disconnect the thermostat power source  
  • If you need to remove your thermostat from the wall, consult the instructions in the manual, and remember to store the screws well as you might need them. 
  • Take the new thermostat out of its box.
  • After installing the mounting bracket, the unplugged wires should be attached to the new thermostat as per the manual.
  • Restart your device and see how the new setup works out.
Airxcel Thermostat Troubleshooting 4 Issues Discussed in Detail

The Benefits of Upgrading Your RV Thermostat

A programmable thermostat is an excellent investment, even if your current model has never given you some common problems. You can get a good, comfortable recreational vehicle for a bit of money.

Other benefits that come with upgrading your RV thermostat include the following:

  • Keeps your weather schedule for a more extended period
  • You get to receive more accurate climate predictions
  • You can customize the temperature settings according to the season. 

If you are looking for an upgrade, consider Google Nest Learning Thermostat. It’s a digital version with remote control and also supports Alexa integration.

Google Thermostat


How Do I Troubleshoot My Thermostat Not Working?

There are four steps to troubleshooting your thermostat that is not working. The first thing to do is to reset the thermostat’s settings. You should remove debris and corrosion, check the power supply and wiring, and modify the temperature detector.

Where Is The Fuse on an Airxcel Thermostat?

The fuse of an Airxcel thermostat is located at the bottom of the thermostat, and you can change it if needed. It’s a compact transparent cylinder with metal sides and a central filament. The thermostat functions best with a 1 amp, 12-volt direct current control circuit.

How to Change an Airxcel Thermostat From Celsius to Fahrenheit?

Hold the mode button for five seconds to change an Airxcel thermostat from Celsius to Fahrenheit. The thermostat has three buttons, the UP button to turn on the thermostat and raise the temperature, the DOWN button to turn on the control and lower the temperature, and the MODE button to turn on the thermostat and switch the mode.

What Is the Function of Thermostat in AC?

The thermostat’s function in AC is to keep the environment at an appropriate degree by automatically turning on and off the heating and cooling unit or adjusting the fluid volume to transmit heat. It shows the current temperature but lets you customize it, preventing ACs from shutting down.

How Do I Operate My Thermostat?

To operate your thermostat, turn it on by tapping the screen. Using the mode key, set up cool or heat options. Learn the different settings, turn on the fan, and set the air conditioner and heat.


Airxcel thermostat regulates your RV HVAC system and helps you conserve energy by ensuring that your heating systems, like a furnace, use only the power needed. So, it’s essential to know the Airxcel thermostat troubleshooting tips.

What problems have you encountered with the Airxcel thermostat? Feel free to share your thoughts and suggestions for another life-changing tech we should cover in an upcoming post. 

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