Daikin Mini Split Not Turning On? Troubleshooting Guide (8 Fixes!)

• Identifying Daikin Mini-Split Issues

• Troubleshooting Power Problems

  • Electrical Checks

  • Circuit Breaker Reset

  • Voltage Irregularities

• Understanding Daikin Error Codes

  • Deciphering Blink Patterns

  • Manual Code Reference

• Addressing Operation Lamp Difficulties

  • LED Indicator Status

  • System Reset Procedure

• Resolving Remote Controller Glitches

  • Battery Replacement

  • Signal Interference

• Dealing with Non-Responsive Units

  • Internal Component Check

  • Professional Assessment

• Fixing Heating and Cooling Malfunctions

• Handling Noise and Odor Complaints

  • Cleaning Requirements

  • System Inspections

• Diagnosing Outdoor Unit Emissions

  • Water Discharge Analysis

  • Steam Release Conditions

• Conclusion

• Frequently Asked Questions

  • Why is my Daikin mini-split not turning on?

  • How can I troubleshoot power problems with my Daikin mini-split?

  • What should I do if I encounter non-responsive units with my Daikin mini-split?

  • How can I address heating and cooling malfunctions in my Daikin mini-split system?

  • What steps should I take to diagnose outdoor unit emissions from my Daikin mini-split system?

Having trouble with your Daikin mini-split not turning on? Don’t fret! We’ve got you covered. Dealing with a malfunctioning HVAC system can be frustrating, especially when it’s the peak of summer or winter. But fear not, because in this post, we’ll delve into the common reasons why your Daikin mini-split might not be turning on and provide you with practical solutions to get it up and running again.

From electrical issues to thermostat malfunctions, we’ll explore the contrasting possibilities that could be causing your Daikin mini-split to act up. By the end of this read, you’ll have a clear understanding of what may be at play and actionable steps to troubleshoot the problem effectively. So let’s dive in and unravel the mysteries behind your non-responsive Daikin mini-split!

Now that the scorching summer is here, the last thing you want is for your Daikin mini-split to fail. Its failure, however, doesn’t mean that it’s unfixable, and this Daikin mini split troubleshooting guide will confirm it.

Issues like a Daikin air conditioner that won’t turn on, cool, drain, dehumidify heat or defrost are troubleshootable. The same goes for a leaky Daikin mini split or one with an error code.

This troubleshooting guide shall look at all those issues. So, instead of calling an expert right away when your mini split won’t work, try to troubleshoot it.

In most cases, you don’t need an expert to get your mini split back working unless it’s a replacement or a complicated issue like a drain clog, frozen unit, or refrigerant leak.

Let’s get into the troubleshooting guide and tackle each of the issues.        

In a rush? Check below the eight issues likely to face Daikin mini splits and their recommended fixes.

Quick Daikin Mini Split Troubleshooting Guide

8 Common Daikin Mini Split Troubleshooting Problems 

Below are eight air conditioner troubleshooting issues prevalent among Daikin mini split.

1.  Daikin Mini Split Not Turning On

Your Daikin mini split won’t work if it won’t turn on. So, you ought to find out why and its most likely one of these reasons:

• Power outage – If there’s a power outage, the mini split won’t turn on when you press the on/off switch. So, check if that’s the case.

• Failure to turn on the on/off switch – Check the on/off switch to ensure it’s turned on. If it’s not, the mini-split won’t turn on. 

• Failure to properly plug in the AC (loose power plug) – If the AC is not properly plugged into the power, it won’t turn on. 

• Tripped breaker – The breaker will likely trip off when an abrupt power surge occurs. Once it does so, your AC won’t turn on. 

• Exploded fuse – An abrupt power surge could also blow up the thermal fuse to protect the mini split. You can confirm if that’s the case using a multimeter. The fuse is faulty if it lacks continuity.

• Non-responsive remote – If the remote control is not working, it won’t turn the mini split on. So, you ought to check the batteries and replace them if they are dead.

• Wrongly set timer – If the timer is improperly placed or malfunctioning, the mini-split won’t turn on. So, check it to ensure it is correctly set. 

Fix 

While you cannot do anything about an outage, you can troubleshoot other issues. Once you confirm there’s no outage, ensure the mini split is plugged in firmly and the on/off switch is on. 

Reset the breaker if off/tripped and replace a blown up (one with no continuity) fuse. If the remote is unresponsive, replace the batteries and adjust the timer correctly if it’s not set well. 

2. Daikin Mini Split Not Cooling

While cooling is arguably the mini split’s most crucial function, sometimes the unit won’t blow cold air. Overall, here are the likely explanations for a Daikin mini split not cooling enough:

• High thermostat setting – The mini split won’t cool if your thermostat reading is higher than your room temperature. You won’t even realize it.

• Dirty filter – A dirty filter prevents proper airflow. So, the cold air won’t go out of the AC unit. The room will instead remain hot. 

• Surrounding filth – If too much debris or dirt heaps around your outdoor unit, especially the condenser, your mini split won’t cool. 

• Open doors and windows – If all the windows and doors are open, the indoors will get excessively cold, which may prevent the mini split from cooling. 

• Frozen coils – If the condenser or evaporator coils are icy, they won’t allow cold air to blow over them, so the mini split won’t cool.

• Low refrigerant – The refrigerant /coolant absorbs heated air from your room to encourage a cooler surrounding. However, issues such as vibration and knocks could cause leakage and prevent cooling.

• Faulty thermostat – if the thermostat is not working or malfunctioning, the mini split won’t be able to cool your space.

• Faulty ventilation fan – If the fan is broken or obstructed, it won’t blow cold air, and the mini split will fail to cool.

Fix 

For the best cooling performance, the thermostat should be set at least 24 degrees lower than the room’s temperature. So, ensure that’s the case.

As for the air filter, clean them. Daikin recommends doing it twice a month in the summer and once in 6 months in other seasons. 

You can use tepid water and soap. Close some of the windows and doors if all are open. But if the issue is a frozen coil, low refrigerant, or faulty thermostat or ventilation fan, call an expert.

3. Daikin Mini Split Not Draining

If your Daikin mini split won’t drain or is probably dripping, the most likely reason is mold clogging in the condensate line. The clog is not only blocking the condensed water from draining but also causing backups and dripping. 

Fix 

Unclogging a mold-obstructed line is not easy. So, it’s recommendable to call an HVAC expert. 

4. Daikin Mini Split Not Dehumidifying

You expect your Daikin mini split to blow cold air during the summer and take out the humid air. However, the AC may sometimes fail to do the latter, and if so, the reason could be:

• Mold obstruction in the condensate line

• The mini split is too big for the space (oversized)

Fix 

Consider talking to an HVAC pro to inspect the condensate drain line and unclog it. But if the condensate line is not moldy, the mini split might be too big for your space. If so, you’ll need to undersize it (get a smaller unit).

5. Daikin Mini Split Not Heating

Your mini-split should be able to heat up during the frosty winter. If it’s not doing so, the reason could be any of the following:

• Low thermostat setting – For the mini split to blow hot air, its thermostat setting should be higher than the room temperature.

• Dirty filter – If the filter is dirty, the mini split won’t just fail to blow cold air but hot air too. 

• Furnace not turned on – Your Daikin mini split won’t heat up if the furnace is off. So, you have to confirm that it’s turned on. 

• Power failure – If there’s a power failure, your AC won’t turn on. So, you have to check the operation lamp to ensure it’s on. 

• Closed windows/doors – If all the windows and doors are locked, the rooms will get hotter, making it hard for the AC to heat. 

• Low refrigerant – A low refrigerant will not just discourage cooling but heating too. So, look for any signs of a refrigerant leak.

• Faulty ventilation fan – A defective fan cannot blow cold and hot air. So, you’ve to check it to ensure it’s not broken.

• Faulty compressor – The compressor can also prevent the mini split from heating up if it’s defective. You’ll need an expert’s help to check and fix it. 

Fix 

Adjust the thermostat setting to promote heating and clean the air filters if they are dirty. Meanwhile, ensure the furnace is on, and the AC has power. If not, talk to an expert.

Consider opening some closed windows and doors and leaving the rest (low refrigerant or faulty ventilation fan or compressor) to an expert.

6. Daikin Mini Split Not Defrosting

If your Daikin mini split won’t defrost, it’s likely because of a clogged air filter or a low refrigerant. So, you should quickly check the air filter from clogging and watch out for any signs of refrigerant leakage, such as wetness and strange smell. 

Fix 

Clean the air filters if they are dirty but leave the other issue (refrigerant leakage to an expert.

7. Daikin Mini Split Keeps Going Off

Your mini-split won’t stay on because of a dirty filter or low refrigerant. Remember, these are the same issues preventing the unit from defrosting. So, check the air filter for clogging and note any signs of refrigerant leakage, 

Fix 

Clean the air filter if they are dirty and call an expert when the refrigerant is leaky.

8. Daikin Mini Split Not Working But Leaking

Several issues could result in a leaky mini-split. They include the following:

• Clogged condensate line

• Clogged filter

• Broken drain pipe 

• Wrong installation

Fix 

Of all the four issues, the easiest to fix is a clogged filter which you’ll need to clean. Call an expert, however, to fix the rest. 

Daikin Mini Split Troubleshooting Codes

The Daikin mini split displays an error code when something is wrong. So, your job is to identify the fault code, interpret it, and take action.

Below is an error code/fault troubleshooting guide you can use.

Visit Daikin’s error code page to discover more errors and their meanings.

Daikin Mini Split Reset

Whether your mini split has an error code you want to clear, or the AC won’t start after an outage, it’s advisable to reset it, and there are two ways to do it:

Option 1 – Breaker Reset

This reset requires you first to turn off the mini-split and then flip off the circuit breaker. Wait 1 –2 minutes to flip the breaker and turn the mini-split on. 

Option 2 – Reset Button

Consider pressing the reset button on your indoor or outdoor Daikin mini split unit to rest the air conditioner. You may, however, have to wait for up to 30 minutes to see if there are any error codes. 

Closing Thought

Above is a Daikin mini split troubleshooting guide for your non-working air conditioning unit. Consider trying the DIY tips and leave detailed fixes and replacements to an expert.

As shared, most issues are DIY troubleshootable, so you shouldn’t be in a hurry to call an HVAC expert.

Identifying Daikin Mini-Split Issues

If your Daikin mini-split is not turning on, the first thing to check for is power anomalies. Ensure that the unit is properly plugged into a functioning power outlet and that there are no issues with the circuit breaker or fuse. A power surge or outage could have disrupted the system’s electrical supply, causing it to fail to turn on.

Inspect the wiring connections to see if there are any loose or damaged wires. Faulty wiring can prevent the unit from receiving the necessary electrical current to start up. If you find any damaged wires, they should be replaced immediately by a professional technician.

It’s also essential to examine the outdoor unit for any debris buildup around the condenser coil or fan motor. Accumulated debris can obstruct airflow and cause overheating, leading to a shutdown of the system as a safety measure.

When troubleshooting why your Daikin mini-split isn’t turning on, pay attention to any error codes displayed on the indoor unit’s control panel. These error codes provide valuable information about potential malfunctions within the system.

For instance, an error code indicating a communication issue between components may point towards faulty wiring connections or sensor problems. Understanding these error codes can help pinpoint specific areas that require attention and repair.

Consulting your Daikin mini-split manual for an explanation of these error codes can offer insights into what steps need to be taken next in order to resolve them.

The operation lamp on your Daikin mini-split serves as an indicator of its current status and functionality. If you notice that this lamp remains unlit even when attempting to turn on your system via remote control or manually at the indoor unit, it suggests possible internal faults within the system.

One common reason for this issue could be related to malfunctioning electronic components such as sensors or control boards inside both indoor and outdoor units. In some cases, resetting these components may resolve minor issues; however, persistent problems will likely require professional diagnosis and repair.

In situations where your Daikin mini-split fails to respond when using its remote control despite having new batteries installed correctly (if applicable), it indicates potential malfunctions either in its receiver module or communication with other internal components.

Try aiming directly at closer range while operating remote functions since obstacles might block signals from reaching their intended destinations effectively.

Troubleshooting Power Problems

Electrical Checks

If your Daikin mini split is not turning on, start by checking the electrical connections. Ensure that the unit is securely plugged into a power source and that there are no visible signs of damage to the power cord. Look for any frayed wires or loose connections that may be causing an interruption in the power supply.

Inspect the control board for any burnt components or loose wiring. Sometimes, issues with the control board can prevent the system from receiving power and turning on. If you notice any abnormalities, it’s best to consult a professional technician to address these electrical concerns.

Circuit Breaker Reset

One common reason for a Daikin mini split not turning on could be a tripped circuit breaker. Locate your home’s electrical panel and check if the circuit breaker connected to your mini split system has been tripped. If so, reset it by flipping it off and then back on.

After resetting the circuit breaker, try turning on your mini split again. If this resolves the issue and restores power to your unit, monitor its operation closely for any further disruptions in power supply.

Voltage Irregularities

Voltage irregularities in your home’s electrical system can also lead to problems with your Daikin mini split not turning on. Fluctuations in voltage levels can cause damage to electronic components within the system, leading to malfunctions such as failure to turn on.

Consider using a voltage tester or multimeter to measure the voltage at the outlet where your mini split is connected. Ideally, you should have consistent voltage levels within an acceptable range (typically 110-120 volts). Significant deviations from this range could indicate potential issues with voltage irregularities that need attention from an electrician.

Understanding Daikin Error Codes

Deciphering Blink Patterns

When your Daikin mini split is not turning on, the unit might be displaying an error code through its blinking lights. Each blink pattern corresponds to a specific error code that can help you identify the issue. For example, two blinks followed by a pause and then three blinks may indicate a particular error, while four blinks followed by a longer pause and then two more blinks could signify another issue.

Understanding these blink patterns can provide valuable insight into what might be causing your Daikin mini split to not turn on. By referring to the user manual or contacting customer support, you can decode these patterns and take appropriate action to resolve the underlying problem.

In some cases, certain blink patterns may require professional assistance from a certified technician. However, being able to recognize these codes empowers you with essential knowledge about your Daikin mini split’s status and potential issues.

Manual Code Reference

To effectively troubleshoot issues with your Daikin mini split, it’s crucial to have access to the unit’s manual or documentation that contains information about error codes. The manual typically includes a comprehensive list of error codes along with detailed descriptions of each code and recommended actions for addressing them.

For instance, if you observe a specific blink pattern indicative of an error code such as E7 or E4 on your Daikin mini split system, consulting the manual will provide you with insights into what these codes signify. This allows you to understand whether there are sensor malfunctions, refrigerant leaks, or other technical problems affecting the operation of your unit.

Addressing Operation Lamp Difficulties

LED Indicator Status

If your Daikin mini split is not turning on, the first thing to check is the LED indicator status. The LED indicators provide valuable information about the unit’s status and can help in diagnosing the issue. When troubleshooting, pay attention to whether the LED indicator is flashing or steady.

A steady green light indicates that everything is functioning normally. However, if you notice a blinking green light or any other color, it could be indicating an error code. Refer back to the previous section about “Understanding Daikin Error Codes” for more details on deciphering these codes.

In case there are no lights at all, this might indicate a power supply issue or a problem with the unit’s internal components. It’s crucial to consult with a professional technician if you encounter this situation.

System Reset Procedure

One of the initial steps in troubleshooting a Daikin mini split that won’t turn on involves performing a system reset procedure. This process can help resolve minor glitches and reset the system back to its default settings.

To initiate a system reset:

• Turn off power to the indoor unit using either the remote control or by directly accessing its power source.

• After ensuring that there is no power running through, wait for approximately 30 seconds before restoring power.

• Once powered back on, observe if there are any changes in operation lamp status or if the unit starts functioning properly.

Remember that while performing a system reset might resolve some issues, persistent problems may require professional intervention from certified technicians who have expertise in handling Daikin mini split systems.

Resolving Remote Controller Glitches

Battery Replacement

If your Daikin mini split is not turning on despite functioning perfectly before, the issue could be as simple as battery replacement in the remote controller. The remote control requires power to send signals to the indoor unit, and if the batteries are weak or dead, it won’t be able to communicate effectively.

To fix this issue, start by opening the back cover of your remote controller. Next, remove the old batteries and replace them with fresh ones. Ensure that you insert the new batteries correctly, following the polarity markings inside the battery compartment.

When inserting new batteries into your remote controller, make sure they are of good quality and have enough power for optimal performance. Low-quality or expired batteries can result in inadequate signal transmission between the remote control and indoor unit.

Signal Interference

Signal interference can also lead to a Daikin mini split not turning on when using a remote controller. Various electronic devices such as TVs, routers, or even fluorescent lights can cause interference with the signals sent from your remote control to the indoor unit.

To troubleshoot this issue, try moving any potential sources of signal interference away from both your mini split system and its remote controller. For example:

• Keep other electronic devices at least a few feet away from your mini split’s indoor unit.

• Make sure there are no large obstacles obstructing direct line-of-sight between your remote control and indoor unit.

Ensure that there are no physical obstructions blocking communication between your remote controller and indoor unit. Objects like heavy curtains or furniture positioned directly in front of either device can hinder proper signal transmission.

In some cases where signal interference persists despite these measures, consider repositioning either your mini split system’s indoor unit or its associated outdoor condenser unit to minimize potential obstructions causing poor signal reception.

Dealing with Non-Responsive Units

Internal Component Check

If your Daikin mini split is not turning on, you may need to perform an internal component check. Start by inspecting the power supply to ensure it’s properly connected and functioning. Look for any signs of damage or wear on the power cord and make sure it’s securely plugged into a working outlet.

Next, examine the circuit breaker or fuse box to see if there has been a tripped breaker or blown fuse that could be causing the issue. Reset any tripped breakers or replace blown fuses as necessary. Check the unit’s filters for dirt and debris accumulation, which can obstruct airflow and impact its functionality.

Inspect the condensate drain line for clogs, as blockages in this component can trigger safety features that prevent the unit from turning on. If you find any obstructions, clear them out to allow proper drainage. Finally, look at the thermostat settings to ensure they are correctly configured and set to activate the system.

Here are some steps you can take when performing an internal component check:

• Inspect power supply connections

• Check circuit breaker or fuse box for issues

• Clean or replace dirty filters

• Clear condensate drain line of any clogs

• Verify correct thermostat settings

Professional Assessment

If after conducting an internal component check your Daikin mini split still isn’t turning on, it may be time to seek professional assessment from a certified technician. A trained professional will have the expertise and tools necessary to diagnose more complex issues that could be affecting your unit’s performance.

The technician will conduct a thorough inspection of all components including electrical connections, refrigerant levels, compressor function, and overall system operation. They will also utilize specialized equipment to pinpoint any underlying problems that may not be readily apparent during a basic visual inspection.

After identifying the root cause of the non-responsiveness in your Daikin mini split, they will provide recommendations for repair or replacement as needed. Opting for professional assessment ensures that potential safety hazards are addressed promptly while also maximizing long-term efficiency and performance of your cooling system.

When seeking professional assessment:

1. Look for certified technicians with experience servicing Daikin systems.

2. Inquire about diagnostic fees upfront before scheduling an appointment.

3. Ask about warranty coverage if applicable.

4. Request detailed explanations regarding identified issues and recommended solutions.

5. Consider regular maintenance plans offered by reputable HVAC companies.

Fixing Heating and Cooling Malfunctions

If your Daikin mini split is not turning on, the first thing to check is the thermostat settings. Ensure that the thermostat is set to “cool” or “heat,” depending on your needs. Sometimes, a simple oversight in setting the thermostat can lead to the unit not turning on.

Check if the temperature setting on the thermostat is lower (for cooling) or higher (for heating) than the current room temperature. If it’s set too high or too low, it may prevent the mini split from turning on as it tries to reach an extreme temperature.

Another common issue with thermostats is dead batteries. Replace them and see if this resolves the problem. Dead batteries can cause erratic behavior in thermostats, including preventing your mini split from turning on when needed.

In some cases, a faulty wiring connection between your Daikin mini split and its thermostat could be causing issues. It’s essential to ensure that all wires are properly connected and undamaged.

Regular filter maintenance plays a crucial role in ensuring that your Daikin mini split functions optimally. Clogged filters can impede airflow, resulting in various malfunctions like failure to turn on.

Inspect and clean or replace both indoor and outdoor filters regularly according to manufacturer recommendations. This will help maintain proper airflow through the system, allowing for efficient operation of your mini split.

When filters become clogged with dust, dirt, or debris over time, they restrict airflow which forces your system to work harder than necessary – potentially leading to overheating and automatic shutdowns as a safety measure against damage.

Handling Noise and Odor Complaints

Cleaning Requirements

To ensure that your Daikin mini split functions properly, regular cleaning is essential. Dust, dirt, and debris can accumulate on the unit’s filters and coils over time, leading to performance issues. Cleaning the filters every few weeks with mild soap and water can prevent blockages and maintain proper airflow. It’s crucial to clean the outdoor unit by removing any leaves or debris that may have gathered around it. This simple maintenance routine can help prevent potential issues that could cause the system not to turn on.

Regular cleaning of the Daikin mini split also involves checking for mold or mildew growth inside the unit. If there are foul odors emanating from the system when turned on, this could indicate a buildup of mold or mildew. In such cases, using a specialized coil cleaner can effectively eliminate these unpleasant smells while ensuring optimal system performance.

Properly maintaining your Daikin mini split through regular cleaning not only prevents malfunctions but also extends its lifespan.

System Inspections

In addition to regular cleaning, conducting thorough inspections of your Daikin mini split is crucial for identifying potential issues before they escalate into major problems. Start by visually inspecting both the indoor and outdoor units for any visible damage or loose components that may be causing electrical faults preventing the system from turning on.

Furthermore, check all electrical connections for signs of wear or corrosion as these could lead to power supply disruptions resulting in non-functionality of your mini split system. It’s also important to examine the thermostat settings as incorrect configurations might be responsible for operational failures.

Performing routine inspections allows you to address minor concerns promptly before they develop into larger complications that impact your comfort at home.

Diagnosing Outdoor Unit Emissions

Water Discharge Analysis

Analyzing water discharge from the outdoor unit is crucial. Check for any leaks or excessive moisture around the unit, as this could indicate a problem. If there’s pooling water or continuous dripping, it might be a sign of a malfunctioning component.

Excessive water discharge can lead to damage to the system and surrounding areas. It may also point toward issues with the condensate drain line or clogged filters. Regularly inspecting and addressing these concerns can prevent more significant problems down the line.

It’s essential to promptly address any water discharge irregularities by consulting a professional technician before they escalate into costly repairs or replacements.

Steam Release Conditions

When troubleshooting daikin mini split not turning on, understanding steam release conditions is vital. The presence of steam during operation may indicate an issue with the refrigerant levels or compressor function.

If you notice visible steam coming from your outdoor unit, it’s important to turn off the system immediately and contact an HVAC specialist for assistance. Ignoring this symptom could lead to further damage and potential safety hazards.

Steam release conditions may stem from various factors such as low refrigerant levels, which can impair your system’s cooling capacity and overall efficiency. Resolving these issues promptly ensures optimal performance while preventing more extensive damage in the long run.

Conclusion

You’ve now gained valuable insights into troubleshooting common issues with your Daikin mini-split system. From power problems and error codes to operation lamp difficulties and non-responsive units, you’ve learned how to address these issues effectively. By understanding the nuances of your system and following the steps outlined, you can now tackle heating and cooling malfunctions, remote controller glitches, noise, odor complaints, and outdoor unit emissions with confidence.

Now it’s time to put your newfound knowledge into action. The next time your Daikin mini-split gives you trouble, refer back to these troubleshooting techniques and take charge of the situation. Don’t hesitate to seek professional help if needed, but remember that you have the power to diagnose and resolve many issues on your own. With this guide at your fingertips, you’re equipped to keep your Daikin mini-split running smoothly for years to come.

Frequently Asked Questions

Why is my Daikin mini-split not turning on?

If your Daikin mini-split is not turning on, it could be due to power issues, remote control glitches, or operational lamp difficulties. Check the power supply, inspect the remote controller for malfunctions, and ensure there are no operation lamp errors.

How can I troubleshoot power problems with my Daikin mini-split?

To troubleshoot power problems with your Daikin mini-split, check the circuit breaker and make sure it’s turned on. Inspect the wiring and connections for any damage or loose connections. If everything seems fine but the unit still won’t turn on, consult a professional technician.

What should I do if I encounter non-responsive units with my Daikin mini-split?

If you encounter non-responsive units with your Daikin mini-split system, try resetting the unit by turning off the power for a few minutes before turning it back on. If this doesn’t resolve the issue, contact an authorized service provider for further assistance.

How can I address heating and cooling malfunctions in my Daikin mini-split system?

When facing heating or cooling malfunctions in your Daikin mini-split system, start by checking if air filters are clean and unobstructed. Ensure that there are no blockages around both indoor and outdoor units that may restrict airflow. If issues persist after these checks, seek professional help.

What steps should I take to diagnose outdoor unit emissions from my Daikin mini-split system?

To diagnose outdoor unit emissions from your Daikin mini-split system properly: 1) Inspect for any unusual odors or smoke coming from the outdoor unit; 2) Listen for abnormal sounds during operation; 3) Observe any leaks around pipes or tubing connected to the outdoor unit; 4) Contact a qualified technician if you notice anything out of ordinary.