What does SE mean in minisplits?

SE is not an error but a mode of the equipment, which is called SAVE Mode. To remove it, press the SAVE button on the control


What does the E6 error mean in minisplits?

This error refers to a communication problem between the indoor and outdoor units. Usually it is problem with communication cable, indoor unit card, outdoor unit card, or both.


What does the E11 error mean on the DX20VC?

This error is generated automatically as soon as the unit is powered up, since it refers to the initial SYSTEM TEST of the unit not being performed. To remove it, perform the unit startup.


Which indoor unit is the DX20VC compatible with?

The DX20VC are compatible with DV * PVC or DV * PEC drivers, and only work with the ComfortNet or CTK04 wired control.


What value should be used as a reference when measuring subcooling or superheating?

For Daikin units, the design value for supercooling and subcooling is 7 to 9 ° F or 5 ° C.


What is the H6 error?

H6 This error indicates that there is no response from the evaporator motor.


What is the C5 error?

C5 indicates that the jumper cap is not placed on the evaporator board, it happens when they replace it with a new board and do not remove it from the defective board.


What is the H5 error?

H5 indicates that IPM protection, the main incidence is that the capacitor board is defective and needs to be replaced.



Dry led bulbs blink 8 times What is the error?

In the MDS, when the dry led light flashes, it indicates that there is a faulty thermistor in the evaporator.


Fan led bulb blinks What is the error?

When the led light flashes, it indicates that the drain pump is defective or that the water level in the tray is high, this is only in the cassette.


When the 3 LEDs blink, what is the fault?

Indicates System Failure, the unit has registered a problem that has occurred 3 times in an hour and they fall into self-protection, most of the cases it is due to high or low refrigerant pressure caused by various reasons.

The system is operating and goes into high pressure alarm, checked the condenser and the fans are kept in low speed even though the pressure is above 500 psi.

This symptom can be various problems, faulty motors, faulty thermistors but the main reason for this symptom is that the unit is overcharged in coolant, many technicians see the suction pressures at a level that is not the usual and add coolant, this causes For the unit to react in this way, it is necessary to remove the refrigerant and verify the charge and place the correct quantity and resolved.



What connects to the F1 / F2 IN terminals?

The communication cable that goes to the evaporators is connected here. The connection is in Daisy Chain, starting at the master outdoor unit and ending at the last evaporator.


What is connected to the F1 / F2 OUT terminals?

The communication cable that goes to the central control is connected here. The connection is in Daisy Chain, starting at the central control and ending at the last master outdoor unit.


What connects to terminals Q1 / Q2?

The communication cable between slave and master outdoor units is connected here. The connection is in Daisy Chain, starting at the master unit and ending at the last slave unit.


What does the U3 error mean?

The U3 error refers to the fact that they tried to turn on an indoor unit without having performed the system start-up. The powered indoor units should be turned off and the system placed in test mode.


At how much pressure should the system be tested for nitrogen tightness?

It should be done at 550psi and should be held for 24 hours. If they have FXTQ units installed, test at 450psi.


Up to what value should the vacuum of the system go?

It should go below 500 microns, and it should be held for one hour.


What value should be used as a reference when measuring subcooling or superheating?

For Daikin units, the design value for supercooling and subcooling is 7 to 9 ° F or 5 ° C.


Why are indoor air pollution levels higher than outdoor air?

Inside our houses, offices, entertainment venues, etc. the air does not regenerate or flow as it does in open spaces, so the particles that float in the environment are more concentrated, which increases the level of pollution.


What are the health effects of breathing poor-quality indoor air?

Breathing polluted indoor air can cause problems falling asleep or concentrating for work or study. It can also cause headaches, irritation of the eyes or throat, fatigue … In the long term, among the possible effects of prolonged exposure to poor quality air are some cardiovascular respiratory diseases.


What are the causes of indoor air pollution?

There are mainly two reasons why indoor air is polluted. on the one hand, the lack of ventilation or air filtration; and on the other hand the pollution that comes from sources such as tobacco, construction or cleaning materials, excessive humidity, or harmful gases that come from outside


What can I do to improve the air quality in my home?

To breathe cleaner air at home we can follow some tips how to ventilate properly, not smoke indoors, use the extractor when cooking or have plants. In addition, it is essential to rely on technology and have purifiers or air conditioning equipment that incorporate filters to retain harmful particles.


Which filter is better?

The more filters a device incorporates, the better the air quality it provides. The filtering system has different characteristics and functions. For example, the titanium apatite filter reduces odors or the silver ions trap pollen. The most innovative and revolutionary is the Flash streamer technology, exclusive to Daikin, which ensures clean and quality indoor air.


Is it important to worry about humidity in the environment? How can I control it?

The humidity of the environment also has effects on our health, so it must be kept at adequate levels (between 40% and 60%). If the humidity is excessive, it can favor the appearance of mold and dust mites: and if it is below what is recommended, it causes dryness in the skin and nose, eye irritation, etc.

To make the indoor environment comfortable- Daikin has equipment that includes humidification and dehumidification technologies to adapt the humidity levels of the different environments.


Can a single mini-split condition the whole place?

This depends on the size of the room or place you want to condition, if there is more than one room you must place a mini-split per room. If you have doubts about which unit to use, we recommend visiting a professional for an orientation.


Can anyone install a mini-split?

No, personnel must have knowledge and certifications related to the field of air conditioning to avoid setbacks and premature breakages. In the same way, you will have the peace of mind of a guarantee on work and parts.


What is the difference between an Inverter vs Non-Inverter unit?

There are several, the most important are low electricity consumption (35% less than non-inverter system), quieter operation and electronic systems that help diagnose.


What voltage should I choose 110v or 220v?

This depends on the voltage available in the place, if you are going to install several mini-splits it is recommended that it be 220v to be able to distribute the load between two lines.


What is preventive maintenance?

The preventive maintenance of a mini-split consists of a general cleaning that involves cleaning the coils, filters, checking coolant pressures, checking the voltage and the amperage.


How often should I perform preventive maintenance?

A visit should be made in the first 6 months after installation to determine how often is the ideal time according to use, it can be every 3, 6, 9 or 12 months.


What is the life expectancy of Daikin mini-split units?

This depends on the use and the frequency that the unit receives adequate preventive maintenance according to the manufacturer’s instructions, its useful life is greater than 10 years.


Do air conditioners transmit diseases because they “recycle” the air?

Well-designed and installed air conditioners are a powerful tool for controlling bacteria, fungi, nematodes, viruses, dust, pollen, organic solvents, and other airborne particles. Of course, the airs require constant maintenance to ensure that the filter systems, ultraviolet lights and drains are working 100%.


What does SEER mean?

Seasonal Energy Efficiency Ratio or Seasonal Energy Efficiency Evaluation, this is the BTU’s between the electrical energy consumed in Watts / Hour, over the same season.


What is the appropriate temperature that should be required of an air conditioner?

Normally when summer arrives and with it the suffocating heat, the desire to forget about this stress can with us and we demand that the conditioners are put to extreme temperatures. This is always a mistake due to the consequences it can have on the operation of the device, on our pockets, on the environment and on the health of users. The human body tends to be comfortable with temperatures between 22 and 26 degrees, so you should not ask a device for more or less, since it will give us what we ask for, and if we ask for more cold we will it will simply give colder, not faster cooling speed; This is not the most appropriate because each degree we increase will increase energy expenditure by 8% with its aforementioned consequences.


Equipment care and cleaning

  1. What material can I clean the indoor unit, outdoor unit and remote controller with?

Clean them with a soft, dry cloth. Before cleaning, remember to turn off the equipment.

  1. How can I open the front panel?

Hold the panel by the tabs on both sides of the unit and lift it up until it stops. Do not touch the metal components of the indoor unit. Touching these parts can cause injury (see drawing below).

  1. How is the front panel removed?

To remove the front panel, open the front panel, sliding to the left or right and pulling towards you; the rotation pin will be disconnected from one side. Next, disconnect the rotation pin on the other side in the same way. Always hold the panel firmly. When removing or attaching the front panel, get on a stable stool and do so very carefully so as not to slip (see drawing).

  1. How should I clean the front panel?

Clean it with a soft cloth dipped in water or a neutral detergent. In case of cleaning the panel with water, dry it with a cloth and leave it in the shade after cleaning. After cleaning, when putting it back on, make sure the front panel is securely attached. Never use hot water with a temperature higher than 40ºC, benzine, naphtha, thinner or other volatile oils, polishing compounds, brushes or any other hard material.

  1. How do I reinstall the front panel?

Align the left and right rotation pins with the slots on the front panel, and push them all in. Slowly close the front panel (press the panel on both sides and in the middle, see drawing).

Filter care and cleaning

  1. How can I remove the air filters from the unit for cleaning?

Open the front panel and remove the filters by pushing up and down the tab in the center of each filter (see drawing below).

  1. How do I remove the titanium apatite (gray) photocatalytic air-purifying filter?

To remove the filter, snap the top of the air cleaning filter onto the tabs (you’ll find 3 tabs at the top). Next, move the lower part of the filter slightly upwards and snap it onto the tabs (you will find 3 tabs at the bottom, see drawing).

Care and Cleaning of Air Filters

  1. How should I clean the air filters?

Clean the air filters with water or with a vacuum cleaner. If the powder does not disappear easily, wash it with neutral detergent dissolved in warm water, and dry the shade. It is recommended to clean the air filters every 2 weeks. Once clean, put the air filter and the titanium apatite photocatalytic air-purifying filter back in place and close the front panel (press the front panel on both sides and in the middle, see drawing).


Care and Cleaning of the Titanium Apatite Photocatalytic Air-Purifying Filter (Gray)

  1. How often should I clean the titanium apatite photocatalytic air-purifying filter and how?

It is recommended to clean the Titanium Apatite Photocatalytic Air Purifying Filter every 6 months with water. In this way it will be kept in good condition. It is advisable to replace it every 3 years.

  1. How should I proceed to clean it?

For good maintenance, remove the dust with a vacuum cleaner and clean it with a little water. If you are very dirty, soak it for 10-15 minutes in water mixed with a neutral cleaning product. Once clean, shake it to remove any remaining water and let it dry in the shade. Since the filter component is made of paper, do not wring it out when you remove the water.

  1. How should I change the filter?

To proceed with the replacement, remove the tabs from the filter frame and replace with a new filter. Dispose of the old filter as flammable waste.

  1. What happens if I forget to clean the filters as recommended?

Operating with dirty filters leads to poor heating or cooling, the air is not deodorized or cleaned, and there may be a bad odor.

  1. Where can I buy new filters?

To request new filters, contact the store where you purchased the unit.

You can also buy them in the official technical service.

  1. What should I do before a long period of inactivity of the equipment?

Only run the fan for several hours on a sunny day to dry the interior. To do this, select the “fan” function in the “mode” option. Then press the “on / off” button and start the operation. Once this process is finished, turn off the unit’s circuit breaker, clean the air filters, and re-regulate the temperature. Finally, remove the batteries from the remote control.

* When a multiple outdoor unit is connected and before operating the fan, make sure that the other units are not turned on.

Note: for more information and specific details, please consult the manual corresponding to the model you have installed.

* Circuit breaker: switch, automatic

Before a long period of inactivity

Checks on equipment

If any of the following occur, check before calling the service technician

Case 1

The equipment does not work (the operation light is off).


  • Has a circuit breaker tripped or a fuse blown?
  • Is there a power outage?
  • Are batteries installed in the remote control?
  • Is the timer setting correct?

Case 2

The cooling / heating effect is poor.


  • Are the air filters clean?
  • Is there something blocking the air inlet or outlet of the indoor and / or outdoor units?
  • Is the temperature setting correct?
  • Are the doors and windows closed?
  • Are the air flow rate and direction correctly adjusted?

Case 3

Operation stops suddenly (operation lamp blinks).


  • Are the air filters clean?
  • Is there something blocking the air inlet or outlet of the indoor and outdoor units?

Clean the air filters or remove all obstacles and turn off the circuit breaker. Then reconnect it and try to operate the equipment with the remote control. If the light continues to blink, call the technical service of the store where you purchased the equipment.

  • Are the operation modes the same for all indoor units connected to outdoor units in a multi-system?

If they are not set the same, set all indoor units to the same operation mode and confirm that the lights are flashing. Also, when the operation mode is “AUTO”, it sets the operation modes of all indoor units to “COOL” or “HEAT” for a moment and checks again that the lights are in normal condition.

If the lights stop flashing after the above steps, there is nothing wrong.

Case 4

Abnormal operation occurs while the computer is on.


The equipment may malfunction with lightning or radio waves. Turn off the circuit breaker, reconnect, and try turning the unit back on with the remote control.

* Circuit breaker: switch, automatic


The cases listed below are not equipment malfunctions, but are due to some reason. You can continue using it normally.

Case 1

The unit takes time to start working when the power button was pressed shortly after turning off the computer or when the “mode” option was selected again.


This is to protect the equipment. You should wait about 3 minutes.

Case 2

Hot air does not come out immediately when you turn on the equipment and select the heating option.


The team is heating up. You should wait approximately 1 to 4 minutes. The system has been designed to start discharging air only after reaching a certain temperature.

Case 3

When the operation in heating mode stops suddenly, a sound of exhaust air is heard.


The system is removing the frost from the outdoor unit. You should wait approximately 4 to 12 minutes.

Case 4

The outdoor unit drips or expels steam.


In heat mode: the accumulated frost on the outdoor unit turns into water or steam when the equipment performs the defrosting operation.

In cool or dry mode: Moisture in the air condenses and water collects on the cold surface of the outdoor unit pipe and thus drips.

Case 5

The indoor unit gives off odors.


This happens when the unit absorbs odors from the room, furniture, or tobacco smoke and discharges them with the flow of air. In such case, it is recommended to call a technician to clean the indoor unit. Check with the store where you bought the equipment.

Case 6

The outdoor fan rotates while the computer is not turned on.


If this occurs after shutting down the computer: the outdoor fan continues to rotate for an additional 60 seconds to protect the system.

If this happens while the computer is not running: When the outside temperature is very high, the outside fan starts rotating to protect the system.

Case 7

The computer stops suddenly (the operation light is on).


To protect the system, the equipment may stop working when there is a large voltage fluctuation. Operation will automatically resume in about 3 minutes.

* Circuit breaker: switch, automatic