9 Blueridge Mini Split Problems And Troubleshooting Guide

While you can call a professional to fix Blueridge mini-split problems, it’s expensive. However, there are cheaper options – you have to know how to repair yourself.

In this article, I’ll help you find the information you need to take up this challenge. And resolve your Blueridge mini-split problems. Moreover, the most common mini-split problems are, not blowing hot or cold air.

blueridge mini split problems

1. Mini Split not Turning On

Another issue that a ductless AC and heat system may encounter is an inability to turn on. This problem could occur for a variety of causes. Consider the following solutions if your mini-split system won’t turn on.

One possible cause of a mini-split not turning on is an operational fault. Before dismissing the system, double-check that it’s set to “hot” or “cool” and that it is turned on. Although this solution is straightforward, many reported mini-split issues resulting from wrong settings.

Suppose your indoor unit settings are correct. But your mini-split still won’t switch on. Check the power in your home. If other appliances in your home aren’t working, the issue is likely with your home’s power supply. And not your mini-split system.

2. Mini Split not Cooling/Blowing Cold Air

If your mini-split air conditioner isn’t providing cool air, a leaky refrigeration system could be the culprit. The mini-split transfers heat from home.

And into the outdoor unit via the refrigerant flowing through copper tubes in the walls. When that system fails, you should let a licensed HVAC tech replace it to avoid issues.

3. Mini Split not Heating/Blowing Hot Air

Ice on the coils could cause your mini-split not to heat or blow hot air. And as I mentioned before, iced-over coils can be a result of

  • a lack of refrigerant
  • a faulty mini-split circuit board
  • malfunctioning sensors

For that reason, you’ll have some mini split repair needs on the go. And poor indoor air quality.

4. Mini Split Leaking Water

When you spot water leaking from the evaporator of your ductless mini-split , check several different things. First, make sure your drain line is pitched down at least five degrees when it leaves the indoor unit.

And goes to the outdoor units. If it’s not, water will drip back into the room. Pitch your drain line properly and look for clogs in the condensate drain line itself.

Install a condensate pump if you can’t use gravity to drain your system. Then, wire it up correctly and install it well below its maximum operating height.

5. Mini Split not Dehumidifying

Like a central air conditioner, a mini split is efficient at dehumidifying. That is, in the summer. However, mold might interrupt the process within your unit’s condensate line. Hence the mini splits won’t efficiently cool your surrounding.

Another reason your mini split system may not be dehumidifying very well is if it’s undersized. An air conditioner that’s too big will be blowing cold air fast without having time to dehumidify it. Mini split sizes will depend on square footage and BTU size.

6. Mini Split Smells

If your ductless mini split smells, it’s indicating that something is wrong. Here are five of the most common odors and their meanings.

Mildew, Musty, or Sour

If your mini-split smells musty, sour, or mildewed, you may have a mold problem. Let a professional inspect your ductless mini split. And, if necessary, rinse the condensate drain and drain line.


A refrigerant leak is likely if your mini-split smells like vinegar or has a sweet odor. A lack of cooled air is another telltale sign that you don’t have enough refrigerant. For instance, contact a nearby HVAC professional.


A couple of things could go wrong if your mini-split smells like fish. In some cases, this odor indicates that there is an electrical problem or a leak.

7. Mini Split Making Noise

Mini splits don’t usually make much noise when they’re running. However, there are two scenarios in which they could make sounds.

Popping or clicking – a plastic housing expanding causes the pop or click sounds. And it happens while using the head unit system.

Swooshing, crackling, or gurgling happen if your mini split switches to defrost mode. And that’s because the defrost mode prevents icing.

You should not stress if you hear these noises because they are common. However, if your mini-split keeps going into defrost mode, it’s a sign that something is wrong. And causes can be low refrigerant, a faulty circuit board, or malfunctioning sensors.

A CNR Air Conditioning Inc HVAC guy will faster locate and resolve the problem.

8. Ice Formation on Coils

Check the coils of your mini-split system to see if ice has formed on them if it is blowing air but not heating your home. Mini-split coils are in charge of extracting heat from the refrigerant.

When air within the system is colder, the coil’s warmth generates condensation. But can later on freeze. Moreover, the coils freeze and won’t pull heat from the surrounding air. Hence causing your system to malfunction.

Switch off the unit to remove ice buildup from your mini-split system’s coils. And unplug it from the power supply. Then, either let the ice melt or remove it. Next, wipe the coils down with a dry cloth. Finally, before reconnecting the system to its power source, ensure you remove moisture.

After you’ve cleared the ice, it’s time to get to the bottom of the issue. One of the primary reasons that ice accumulates on the coils of a mini-split system is dirty coils. Hence they need a thorough cleaning.

Inadequate refrigerant levels are another typical cause of ice development. Most mini-split systems come with refrigerants. But you may need to add more refrigerant in some circumstances.

9. Refrigerant Issues

All current mini-split systems use R-410A. The refrigerant is less damaging to the environment than R-22, which is now obsolete. It does, but it works at a higher pressure than other refrigerants. And it takes special care to keep the system running. So make sure you’re using the proper R-410A gauges.

Most systems come pre-charged with some refrigerant. However, depending on the length of your line set, you may require more. The installation handbook specifies the refrigerant weight required per foot. Always follow these guidelines to the letter. A lack of refrigerant can result in several issues, including:

Inadequate charge

  • The system may not run at all or may display an error code.
  • The system may make loud noises
  • It might not be able to keep the space at a constant temperature, and it might not be able to dehumidify
  • It may only work in cooling mode and not in heating mode

Excess charge

  • The system might not turn on
  • The unit is emitting loud noises
  • The unit may not maintain the temperature or may exceed the setpoint

Blueridge Mini Split Error Codes

blueridge mini split problems and troubleshooting

Blueridge mini split error codes e1

In general, an E1 error number indicates communication between the interior. And outdoor units of the mini-split system have been impeded. It could be experiencing intermittent connectivity troubles or have failed. When the interior and outside units cannot communicate, the indoor temperature cannot balance.

To try and troubleshoot the E1 problem code, turn off the mini-split, wait two minutes, and then restart it. If the E1 error code appears again, you should check the voltage of the unit.

Blueridge mini split error codes p6

The computer boards in your mini-split system ensure the interior. And outdoor units can communicate with one another. Unfortunately, a P6 error code is frequent when the drive board is malfunctioning.

A safety switch protects the mini-split when the temperature range moves above safe levels. They include any components that regulate the external compressor.

And if this switch is on, the P6 code may display. Likewise, if the compressor is experiencing high or low pressure, the P6 code appears.

Blueridge mini split error codes p4

A P4 fault code is associated with your mini splits compressor system within the outside unit. High temperatures are the most frequent cause of compressor drive failure. Thus, high temperatures at the discharge line could trigger a P4 error code.

Blueridge mini split error codes h5

The intelligent power module is in protection mode, as indicated by the h5 error code. The protection mode manages low voltage and overvoltage situations.

In addition, there are concerns about overheating and short-circuiting. And to remedy this issue, your unit will require service.

Blueridge mini split error codes df

The code “DF” on a mini-split indicates a failure of the Defrost mode. For the AC division, the displayed DF serves as an error code. And in such cases, the AC returns to normal operation rather than defrost mode.

Blueridge mini split error codes e7

This error occurs when the outdoor and indoor units are set to separate settings. For example, when one unit is in heat mode, and the other is in cooling mode, the E7 mode conflict error appears. And that’s on your indoor display.

To rectify this problem number, you must inspect both the interior and outdoor units. Set the units to the specified mode, ensuring they match for proper functionality.

Blueridge mini split error codes e3

Low pressure is the result of a leak or obstruction in the system. If the filter, fan, or evaporator clogs, this can happen.

Check for dirt accumulation on the exterior unit. Inspect the system for any visible leaks. If there is no dirt buildup or if you find a leak, you must contact a technician to address the problem.

Blueridge mini split error codes f0

The error number FO indicates that the refrigerant in the air conditioner is running low. As a result, there is a leak ( located on the flare fitting connections of your line-set).

First, you must locate and rectify the leak. Then, drain any remaining refrigerant from the AC unit. You will then be able to resolve the FO error.

Blueridge mini split error codes e8

If you have a mini-split air conditioner, an error e8 will occur if the fan speed fails. Mini-splits have an indoor air-handling unit or evaporator. And an outdoor condenser or compressor.

Blueridge mini split error code h1

The unit has gone into defrost mode. And this happens when the outside heat exchanger’s control sensor activates. And turns off heat injection to the indoor unit. So, for thawing to occur, heat transfers to the outdoor unit.

If the defrost mode functions, this error code will go away. You can check to see if the process is working by inspecting the outdoor unit.

If not, your unit may have an issue with the control sensor or heat exchanger. Thus necessitating the services of an experienced specialist.

Blueridge Mini Split Troubleshooting

Check the outdoor unit – Ice builds up on the outdoor unit is a telltale sign of trouble in the summer. And this is usually due to a lack of maintenance.

But your HVAC specialist can perform the cleaning and lubricating. Thus minimizing ice buildup and preserving proper airflow and high efficiency.

Check your home’s Power – Check your circuit breaker to ensure that no circuits have been tripped, and then inspect the unit’s cable and plug for signs of damage. If your remote isn’t working, make sure it has fresh batteries and try pressing the reset button or see if you can activate the item manually via its control panel.

Clean the drain line – Most HVAC techs recommend pouring vinegar down the drain line. And that is a few times per year to help break up any accumulation and flush it through the system. If the unit doesn’t drain or if water is coming from the indoor air handler, it’s time to call in a professional.

Power supply trouble – Check to ensure that you’ve plugged in the power cord. And that the circuit hasn’t tripped. Also, it would help if you inspected the cord or plug for wear and tear. And that’s because they could obstruct power transfer. Thus constituting a safety threat in your home. Finally, check the batteries in your remote.

Dirty filter or vents – You should check and replace your air filter on a regular basis. Your air conditioning repair provider may provide instructions. And a timeline for this work. You may also inspect the air conditioner’s vents for filth. And that’s through shining a flashlight into the unit and looking for accumulation.

Refrigerant leaks – If your ductless mini-split AC switches on and off as it should. But does not blow chilly air as expected; it could be due to a refrigerant leak. Your professional air conditioning repair service can inspect your system for leaks. And replace/repair any leaking lines. Moreover, they’d recharge the refrigerant so that your system can once again.


In the article, we’ve covered the most common Blueridge mini-split problems. And also the fixes. Some of them you can fix, but others it’s impossible. The best thing you can do is call the company.

And ask if they have any repair techs in your area. If so, they will help you out over the phone. If not, they may still be able to ship you parts to fix it yourself.