sub-zero error codes

How To Troubleshoot Sub-Zero Error Codes

Sub-Zero is a premium, luxury brand of home appliances known for its high quality, advanced features, and sleek designs. But like any appliance, they can occasionally break down or experience problems. The brand offers full-size refrigerators, under-counter models, and wine coolers. These high-tech appliances come with a wide range of features, such as:

Internal icemaker
Internal water dispenser
Wi-Fi capable
Outdoor rated

Your Sub-Zero will display an error code on the control panel when this happens. The cool thing about these first-class appliances is the built-in diagnostic system by using these Sub-Zero Error Codes.

If you see Sub-Zero error codes, don’t panic! These codes help you troubleshoot the problem to get your appliance back up and running as quickly as possible.

This article will discuss some of the most common Sub-Zero error codes, what they mean, and when to call a Sub-Zero repair expert. We’ll also address issues where Sub-Zero Refrigerator maintenance can help prevent repairs.

Where Are the Sub-Zero Error Codes Displayed?

The Sub-Zero refrigerator displays error codes on the control panel on the inside wall of the fridge, near the door where the temperature controls are located. Some models also have an external display panel you can see on the outside of the fridge.

When you experience a problem or see a code, don’t hesitate to write it down. This will help you remember which sub-zero error codes corresponds to which error when you call for service. Never unplug your Sub-Zero or turn off the power until you have recorded the error code!

most common sub-zero error codes

There are many Sub-Zero error codes, but some are more common than others. Here are six of the most common error codes you may see when there’s a problem with your Sub-Zero refrigerator or freezer.

EC 05

EC 05 is a Sub-Zero refrigerator error code when the system reads inconsistent temperatures in the freezer or refrigerator.

This error is most often caused by a faulty thermistor, a sensor that monitors the temperature in your fridge. Loose or faulty connections between the thermistor and the control board may cause the issue or mean the thermistor is defective.

This repair requires special tools and training to fix, so it’s best to call a Sub-Zero error codes repair expert. Other error codes involving temperature fluctuations and thermistor problems include EC 06, EC 07, and EC 08. A certified repair service can help you troubleshoot these issues.

EC 10

The freezer temperature is too high when you see Sub-Zero error codes EC 10. There are a few potential causes for this error code.

First, make sure the doors are closed correctly and that nothing is blocking the vents. You can reset this code yourself.

Turn the circuit breaker that your appliance is connected to off for 30 seconds. If the error persists, there could be a problem with the evaporator fan or the compressor.

A power surge often causes compressor problems, so if you’ve experienced one recently, it’s best to call a Sub-Zero error codes repair expert. EC 11 and E 12 are Sub-refrigerator error codes related to the temperature. EC 12 is specific to the lower cabinet door. It requires the same troubleshooting steps as EC 10.

For Sub-Zero error codes EC 10, EC 11, and EC 12 don’t open the doors again until it reaches optimal temperature after resetting the system.

EC 15

The Sub-Zero error codes EC 15 is displayed when the system detects a leak in the sealed system.

Your refrigerator’s sealed system keeps it cool. It includes the compressor and condenser. When there’s a leak in this system, the repair is necessary to prevent further damage to your fridge.

There are a few ways to troubleshoot this problem. First, you can reboot the refrigerator by turning off the power to the outlet at the circuit breaker and waiting for a minute. Turn the power back on and see if the error continues.

If the problem persists, there may be a leak in the tubing or a problem with the compressor. These repairs require special tools and training, so it’s best to call a Sub-Zero error codes repair expert.

EC 20 and EC 21

Sub-Zero error codes EC 20 and EC 21 relate to the freezer temperature and defrost system.
EC 20 suggests that the defrost is under-heated, while EC 21 means the defrost system isn’t working correctly and the temperature is too high.

There are several potential causes for these Sub-Zero error codes. Many things can go wrong, from issues with wiring to the freezer evaporator. The best way to troubleshoot this problem is to call a Sub-Zero error codes repair expert for help. EC 24 is also related to the defrost.

EC 22

EC 22 is a potential wiring or defrost issue. This Sub-Zero error codes may also display SU on the panel. You should always call for service when you see this error code. Wiring issues are dangerous, and only a professional should fix them.

EC 30

There’s an entire list of Sub-Zero error codes related to the icemaker. EC 30 occurs when this function isn’t working correctly. You can troubleshoot by checking for jams outside or inside the unit. The ice bin may also be full, so empty it if necessary.

If you still see the error code, there may be a problem with the water inlet valve, pump, or icemaker. These repairs require a Sub-Zero error codes repair expert.

EC 38

The Sub-Zero refrigerator fault code EC 38 can mean you have an issue with the compressor. This is a common problem that can have several causes. There are two E 38 Sub-Zero freezer codes—flashing or steady and not flashing.

Both imply a problem with the compressor because of excessive run times or a fault with the evaporator thermistor.

First, check to ensure the power cord is plugged into the outlet correctly and there isn’t a power surge. If the error code continues, there may be an issue with the compressor itself, which will require professional assistance to fix.

An expert has the tools and knowledge needed to troubleshoot your refrigerator safely without risking your warranty.

EC 40

EC 40 is another Sub-Zero freezer error code that signals a problem with the compressor. However, this relates to Sub-Zero refrigerator maintenance.

If you see this error code, the unit is overdue for service. Failing to do so can cause a hefty bill from damage to the compressor. Also, it may void your warranty, leaving you with expensive repairs or the need to replace the entire unit.

Only use a Sub-Zero repair expert authorized by the company to prevent voiding your warranty.

EC 50

If your compressor’s excessive running time, you may see the Sub-Zero refrigerator error code EC 50. This means the compressor is running too much.

There are a few things you can do to fix this problem. First, check to ensure nothing stops the door from closing and sealing correctly. Press and hold the door alarm key for 15 seconds to clear the code. A simple service call for cleaning and maintenance may be all that’s needed to fix the problem.

EC 55

EC 55 is a Sub-Zero refrigerator fault code for the freezer. If you see this code, the unit is trying to enter defrost mode, but there’s a problem.

The most likely cause is a problem with the evaporator thermistor. This can be because of a loose connection, an issue with the wiring, or damage to the unit.

EC 80

The Sub-Zero freezer error code EC 80 involves the variable speed compressor. The unit will display this code when there’s a high or low differential pressure on the compressor.

There are several potential causes for EC 80, including issues with wiring, suction pressure, and return of suction pressure.

If you see this error code on your Sub-Zero refrigerator, it’s best to call a repair professional for help. Only an expert has the tools and knowledge needed to diagnose and fix this problem without risking your warranty quickly.

EC 85

Sub-Zero refrigerator fault code EC 85 signals an overpressure on the compressor. This may be caused by a low fluid level, leading to extended run times and excessive heat buildup.

Check the levels of refrigerant and ensure they’re topped off. You may need to call a Sub-Zero repair expert to help with this because it’s a delicate process.

EC 86

If you see Sub-Zero refrigerator error code EC 86, there’s a communication failure between the compressor and main control board. This can be due to a loose connection, an issue with the wiring, or damage to the board.

If you’re experiencing this error code, it’s best to call a Sub-Zero repair expert for help. Electrical issues are complex and best handled by a professional who can ensure the job is done safely without voiding your warranty.

sub zero refrigerator error codes
Flashing "Service" Indicator

The service indicator is a key on the control panel that, when pressed, will put the refrigerator into service or diagnostic mode. Sub-Zero error codes repair experts use this to test different parts of the unit.

If the service indicator is flashing, there’s an issue with the freezer. The most likely cause is a problem with the evaporator thermistor, which may be loose, have an issue with the wiring, or be damaged.
You should call a Sub-Zero error codes repair expert to diagnose and fix this problem. Failing to do so may cause further damage to the unit, which can cost a significant amount of money to repair.

Do All Error Codes Require a Sub-Zero Repair Expert?

Yes. While you can fix some error codes with a simple Sub-Zero error codes maintenance routine or user adjustment, most require the expertise of a Sub-Zero repair technician.

We recommend calling for service whenever you see an error code on your Sub-Zero fridge, as these issues can often worsen over time if left unaddressed.

Regular Sub-Zero error codes maintenance (and refrigerator) can help prevent repairs by keeping your appliance clean and in good condition. This includes continually cleaning the coils and gaskets and the fridge’s interior.

Also, Sub-Zero recommends you have your fridge serviced by a Sub-Zero error codes expert every two years to ensure it’s running efficiently and to catch any potential problems early on.

What Are the Other Benefits of Regular Sub-Zero Refrigerator Maintenance?

There are many benefits to regular Sub-Zero refrigerator maintenance, including:

♦ Improved energy efficiency, which can save you money on your heating and cooling bills

♦ Reduced risk of costly repairs or replacement due to damage or wear and tear

♦ Extended lifespan of your appliance, allowing you to get the most out of your investment

♦Less food waste, as a well-maintained fridge will keep your food fresher and help avoid spoilage

With regular Sub-Zero freezer maintenance, you can enjoy all the benefits of a reliable, efficient refrigerator that works at peak performance for years to come.

When to Call a Sub-Zero Repair Expert:

If you see an error code on your Sub-Zero fridge, freezer, or wine cooler, it’s best to call a Sub-Zero error codes expert as soon as possible.

At Dependable Refrigeration, we have a team of factory-trained and certified Sub-Zero refrigerator repair technicians who are experts at diagnosing and repairing Sub-Zero appliances. Call us today @ (520)888-7039 to schedule a service call, and we’ll have your kitchen necessity back up and running in no time!