RV refrigerators sometimes suffer malfunctions. On a long journey, this situation does not bode well for perishable items such as fresh vegetables, fruit, and raw meat. Food spoilage means either ending a trip early or spending more money on non-perishable options and eating out. Fortunately, there are some DIY steps you can take for RV refrigerator troubleshooting on the go. Preventative maintenance and prompt repairs are the best way to preserve your RV and protect it from common RV breakdowns.

RV refrigerator repair 

According to data gathered by the claims support team at Wholesale Warranties, refrigerators are in the top five most common RV repairs. Not only are they frequent, but they’re labor-intensive. Did you know that for many motorhomes, the refrigerator needs to be removed through the front windshield just to fully diagnose and repair? Those labor hours stack up quick. It’s important to know how to prevent common breakdowns when you can, or how to address simple maintenance while on the road.

There are several potential issues that could be causing a malfunction. Fortunately, in the exception of a major issues, you can conduct RV refrigerator troubleshooting on your own. Your RV owner’s manual should include a detailed diagram of your refrigerator model and its parts. Generally, RV refrigerators consist of these main working components:

Cooling Unit:

Absorption Cooling System: This is the most common type of cooling system in an RV refrigerator. It uses a combination of water, ammonia, and hydrogen gas. Heat is applied to a solution containing these substances, causing the ammonia to evaporate and create a cooling effect.

Compressor System: This type of system is similar to household refrigerators. Some RV refrigerators use a compressor and refrigerant, such as ammonia, to cool.

Heat Source: This is used in absorption cooling systems to heat the ammonia solution. It can be powered by electricity or propane.

Refrigerant: In absorption systems, the refrigerant is typically ammonia. In compressor systems, it is a substance like Freon.

Condenser and Evaporator Coils: These coils aid in cooling by releasing heat absorbed from the internal environment into the external environment.

Thermostat: The panel that modulates the temperature inside the refrigerator, ensuring it stays within the desired range.

Insulation: Helps maintain the internal temperature by reducing heat exchange with the external environment.

Controls and Display Panel: Allows the user to set the temperature and switch between power sources.

Power Sources:

Propane: Many RV refrigerators are designed to run on liquid propane gas. This is particularly useful when boondocking or camping off-grid without access to electricity.

Electricity (AC Power): When connected to electric hookups or a generator, the refrigerator can run on 120-volt AC power. This is common in RV parks.

Battery (DC Power): Some RV refrigerators can operate on 12-volt DC power from the RV’s battery system. This is useful while the RV is in motion or disconnected from external power sources.

Dual Power (Propane/Electric Hybrid): Many RV refrigerators are dual-powered, meaning they can switch between propane and electric power depending on availability. This flexibility ensures the refrigerator can function in various conditions.

In summary, an RV refrigerator typically consists of a cooling unit, heat source, refrigerant, coils, thermostat, insulation, and control panel. It can be powered by propane, AC electricity, DC battery power, or a combination of these sources. Knowing these components and their functions helps in identifying issues. However, not every issue is easily resolved alone. Fortunately, RV refrigerators are often covered under an RV extended warranty with other appliances.  

RV fridge not working on gas 

A basic step in RV refrigerator troubleshooting is determining whether the power source is the culprit. If your fridge is working on 120-volt AC, then you can rule out any problems with the cooling system or DC power source. If the RV fridge is running on electricity but not working on gas, that means the issue has been isolated to the propane fuel line. First, check the level in the propane tank. Sometimes this simply indicates that fuel has run out.

If propane levels are sufficient and the fridge still isn’t running on gas, then you may be experiencing what is called a “propane lockout.” This can be caused by a bad LP regulator or an obstruction in the line, such as a kink. This issue occurs in either the propane system or the appliance itself.

The next step is to turn off all propane-fueled appliances in the RV, then shut off the service valve. If you already opened this valve before shutting off these appliances, then activate the excess flow valve. This feature prevents the flow of propane needed to ignite in the refrigerator. After shutting off the service valve, wait for a few minutes then turn it back on to promote the amount of pressure needed to utilize the propane system.

If the fridge still has not ignited after repeating this process three times, reset the refrigerator by shutting it down. After waiting for a few minutes, power it back on to see if it successfully ignites. If the issue still isn’t resolved, then it’s time to remove any perishable items from the refrigerator to prevent spoiling. The issue may be a result of corroded electrical parts, a dirty burner assembly area, or a manufacturer defect. An RV technician will be able to identify and repair the problem. An RV warranty is a great way to protect yourself from the cost of RV refrigerator repairs.

RV fridge not working on electric

RV refrigerator troubleshooting often involves the process of elimination. If the RV fridge is not working on electric power but running on propane, this indicates that the issue is not with the cooling coils or DC battery. Therefore, the problem can be identified along the AC power chain. Here are some steps to take in identifying the culprit:

Power Cord: First and foremost, determine whether the refrigerator cord is plugged into its designated outlet. You can locate this in the lower access panel.

Circuit Breaker: If the fridge is plugged in properly and still not running, check the RV’s electrical panel to make sure the circuit breaker wasn’t tripped. If the switch is in the “Off” position, then switch it back on.

Circuit Board: Lastly, it is possible that there is a blown or inoperable fuse on the refrigerator circuit board, or the heating element requires replacement. At this point, it is time to call a certified technician to diagnose and resolve the issue. 

Norcold RV refrigerator reset 

There are two common RV refrigerator brands: Norcold, and Dometic. As an RV owner, it’s important to know what type of refrigerator runs in your RV so you can troubleshoot following the right steps. To reset a Norcold refrigerator, you may only need to turn the power off and back on again. Some older models may have a designated reset button, whereas others do not. However, some newer models simply need to be turned off and on. You can refer to your model type in the owner’s manual, which should also include basic reset instructions as well as the location of the reset button.

Dometic RV refrigerator reset  

Unlike Norcold refrigerators, simply turning off a Dometic RV fridge will not cause a reset. You will need to find and press the reset button. The location of the reset button varies depending on the model. Typically, this button is located within the fridge section of the refrigerator. Depending on the model, reset the unit by switching the circuit breaker off and back on again. For specific instructions, it is advisable to refer to the owner’s manual. 

RV fridge not getting cold but freezer is 

If the RV fridge is not getting cold but the freezer is, there are several potential causes for this issue. When troubleshooting, always begin with the simplest possible cause for the problem. From here, follow the process of elimination. Here are some common causes and the necessary steps for RV refrigerator troubleshooting:

1. Damaged or Faulty Door Seal:

Problem: If the door seal is damaged or not sealing properly, warm air can enter the fridge, making it less effective at cooling.

Solution: Inspect the door seal for cracks or gaps. Replace the seal if it’s damaged or doesn’t close tightly.

2. Power Source Issues:

Problem: The fridge might not be receiving consistent power, especially if running on propane or DC power.

Solution: First, make sure the fridge is plugged into its designated outlet. Then ensure the fridge is receiving stable power. Check connections and switch between power sources (propane, AC, DC) to see if there’s a difference.

3. Improper Leveling:

Problem: RV refrigerators need to be level to function properly. An improperly leveled fridge can lead to cooling issues.

Solution: Check that the RV is level. You can accomplish this by using a bubble level on the fridge shelf. If the fridge is not level, adjust the RV or fridge position as needed.

4. Blocked or Restricted Airflow:

Problem: The cooling unit works by moving cold air from the freezer to the refrigerator compartment. Blocked vents or fans can restrict this airflow.

Solution: Check for obstructions in the vents and ensure the fans are working. Clean any dust or debris that might be blocking airflow. Sometimes restricted airflow is simply the result of frost buildup. This can be resolved by manually defrosting the refrigerator by turning it off and allowing the frost to thaw.

5. Evaporator Fan Not Working:

Problem: The evaporator fan circulates cold air from the freezer to the fridge. If it’s not working, the fridge won’t cool properly.

Solution: Listen for the fan when the fridge is running. If you don’t hear it, check the fan for obstructions or test it with a multimeter. Replace if necessary.

6. Thermistor Issue:

Problem: The thermistor is a temperature sensor that controls the fridge temperature. If it’s faulty or incorrectly positioned, the fridge may not cool properly.

Solution: Locate the thermistor (often clipped to the cooling fins inside the fridge) and ensure it is correctly positioned. Refer to the manual for correct positioning. Then, test it with a multimeter for proper function. If issues persist, you may need to replace it.

7. Cooling Unit Problems:

Problem: If the cooling unit is partially clogged or malfunctioning, it might still cool the freezer but not the fridge.

Solution: Check for yellow residue or ammonia smell, which indicates a leak. Unfortunately, if this is the problem, the cooling unit may need to be replaced by a professional.

It’s always a good idea to your manual for specific RV refrigerator troubleshooting steps and diagrams. If you’ve tried these steps and the issue persists, it may be time to consult a professional RV technician. They can perform a more thorough diagnostic to identify and fix the problem.

Leveling your RV 

To help prevent potential RV refrigerator issues, it is important to keep your RV level. Many refrigerator types, especially absorption refrigerators, require the RV to be level in order to operate efficiently. Additionally, if an RV is not level, this could pose a safety concern to the RV occupants. The additional strain on the leveling jacks poses structural risks and undue wear, thus impacting the longevity of your rig and putting you at risk for expensive repair costs.

If the RV is not level, the cooling unit in your fridge may not function correctly. This leads to poor cooling performance and potential damage. Keeping your RV level ensures proper refrigerant circulation, as this cooling mixture relies on gravity to circulate properly. An unlevel RV can cause the refrigerant to pool in certain areas of the cooling system. This can lead to overheating and damage to the cooling unit, potentially resulting in costly repairs or the need for a complete replacement.

For the absorption process to work at optimal efficiency, the refrigerator needs to be level. In a properly leveled RV, the refrigerant can circulate effectively, ensuring consistent and optimal cooling performance. Keeping an RV level is essential for the efficient operation of an absorption refrigerator, preventing damage and ensuring proper refrigerant flow.

Deep cleaning your RV fridge

Although it’s good practice to regularly clean your RV fridge, every unit should undergo an occasional deep cleaning. Deep cleaning promotes health and hygiene, preserves freshness, and maintains fridge functionality. Here are some steps for deep cleaning your RV fridge:

1. Turn Off the Fridge: Switch off the power supply. If the fridge also operates on propane, then shut off the propane supply as well.

2. Empty the Fridge: Remove all food items, removable shelves, and drawers from the fridge and freezer.  

3. Defrost (if applicable): This step will allow any frost buildup to thaw. Place towels at the base of the fridge, if necessary.

4. Clean Removable Parts: Thoroughly clean all removable parts, such as shelves and drawers, with a mixture of mild dish soap and warm water. Avoid using products with harsh chemicals that can damage surfaces.

5. Wipe Interior: Wipe the base, walls, and ceiling of the fridge interior with the same products used for the removable parts.

6. Clean Door Seals: It’s important to keep the fridge door seals, or gaskets, clean to prevent mold and damage. Wipe down the gaskets with soap and warm water to remove dirt. If mold is present, mix a solution of vinegar, water, and baking soda to brush along the seal. This will kill the mold. Scrub the paste off after 10-15 minutes.

7. Clean Vents and Coils: On the fridge exterior, clean the vents and coils. This ensures proper airflow for optimum efficiency. Use a soft brush or handheld vacuum to remove dust and debris.

8. Sanitize the Interior: Once the interior is clean and dry, sanitize the surfaces with a food-safe sanitizer. You can also use a diluted bleach solution of one tablespoon of bleach to a gallon of water. Wipe the surfaces with the sanitizer, then allow it to sit for a few minutes before wiping clean with a damp cloth.

9. Dry and Reassemble: Wait to reassemble until the fridge interior is completely dry, as lingering moisture can lead to mildew. Once the interior is dry, place the removable shelves and drawers back in the appropriate compartment.

10. Restock and Restart: Turn the fridge back on and wait until it reaches the desired temperature. Then, restock it will all your favorite foods!

General tips for maintaining a clean RV fridge is to perform a basic cleaning routine, regularly inspect the seals, and place a box of baking soda in the fridge to absorb odors. By following these steps, you can ensure your RV fridge remains clean, odor-free, and efficient!

RV fridge making clicking noise

If the RV fridge is making a clicking noise, this may just be a sound associated with regular functioning. The clicking noise may be the result of liquid transfer within the refrigerator. However, if the sound is not typical for your fridge or distinct in some way, then it may indicate an issue.

Problematic clicking noises are often due to a cooling fan malfunction. The first step in troubleshooting this issue to check the area for debris. To loosen the debris, you may have to flip the unit by unplugging it, removing it from the RV, then flipping it over. Otherwise, you may simply need to replace the fan. If you replace the fan and the issue persists, then it may be time to consult a technician. 

RV fridge ventilation 

RV fridge ventilation refers to the system that allows hot air to escape from the back of the refrigerator and brings in cooler air to aid the cooling process. Proper ventilation is crucial because it ensures the fridge operates efficiently. Common issues affecting ventilation include blocked or obstructed vents, dirty or clogged cooling fans, and improper installation that restricts airflow. Poor ventilation can lead to higher energy consumption, reduced cooling efficiency, and potential damage to the fridge’s cooling unit. Regular maintenance and ensuring clear, unobstructed airflow are essential for the proper functioning of an RV refrigerator.

FAQs 

How do I know if my RV refrigerator cooling unit has failed?

The most obvious sign that the RV refrigerator cooling unit is not working properly is a lack of cooling despite the temperature setting. Not hearing operating sounds would also alert you to an issue. Check for a strong ammonia odor or yellow residue, as this would indicate a leak. If signs of leakage are not present, use your hand to check for warmth behind the fridge. If it isn’t warm, the cooling unit may not be working. To address the issue, ensure the RV is level, check the fridge power sources, then reset the fridge if necessary. 

What is the most common RV fridge failure?

The most common RV fridge failure is a problem with the power source. Power sources are often a combination of propane gas, electricity (AC) power, and battery (DC) power. You can easily determine which power source is the culprit by checking whether the fridge will run on gas but not electricity or vice versa.

What shortens the life of a refrigerator?

Improper care and negligence shorten the life of a refrigerator. Ensure you are regularly cleaning your refrigerator. An occasional deep cleaning helps prevent mold growth and promote optimal functioning. Tend to routine maintenance procedures and address any issues promptly. This will extend the life of your unit. 

Where is the reset button on my RV fridge?

The location of the reset button depends on which refrigerator model you have. Some reset buttons are located inside the refrigerator, whereas others are in the freezer. Depending on the model, you can reset the unit simply by turning it off and back on again. Check your owner’s manual for specific details, labeled graphics, and proper instructions. 

What is the life expectancy of an RV refrigerator?

Fridge life expectancy depends on numerous factors, such as manufacturer, model type, and maintenance schedule. According to RV Share, life expectancy typically ranges between 15-20 years. Given proper care, RV refrigerators can last up to 25 years. Proper care and timely maintenance are key to maximizing the life expectancy of an RV refrigerator.