The Ultimate Guide to Air Conditioner Troubleshooting: Solving Common Cooling Conundrums

Do you have issues with your air conditioner? And you don’t know how you can fix them that we’re trying ahead in this guide to air conditioner troubleshooting to fixing all these issues.

I remember when my friend called me and he said hey my friend I don’t know what happen to my air conditioner it makes a loud noise and it’s leaking and it’s freezing up, he said I don’t what to am I call a certified person? I said no hold on.

to call a qualified particular person will cost you some huge cash, so I did some research for his problems and I discovered that’s to repair them without calling a professional.

Please stay with us and read the most common points & solutions that you could be facing if you purchase an air conditioner.

guide to air conditioner troubleshooting

Guide to air conditioner troubleshooting

we’ll show you the most common problems that you may face someday if you have an air conditioner at home

What causes your air conditioner to freeze up?

1. Units are geared up with freeze safety to prevent freeze-up from occurring. If freeze-up does occur check the following.

  • Check freeze sensor is positioned within the lowest part of the coil. Generally, that is the place freeze-up begins.
  • Check freeze sensor is inserted totally and comfortable in coil fin. If not one other location might have to be chosen.
  • Take care to not insert sensor directly into coil tube.
  • insert sensor between two tubes.
  • Check indoor air filter.
  • Check coil is clean. If dirty, clear utilizing applicable coil cleaner or delicate detergent.
  • Is the tools being operated in cooling mode when outside temperatures are under 32°F? If sure, have a condenser fitted with low ambient control so proper system pressures are maintained.
  • Does the system have a correct refrigerant cost? System low on refrigerant may cause air handler freeze-up.

Why is my air conditioner so loud?

Be conscious that noise can travel throughout the ductwork, carrying sound from one room to a different. A well-designed room with good soundproofing may be compromised by poorly deliberate air-con.

This is very difficult when ductwork feeds into a house theatre/music room – sending noise from one room to a different or permitting it to exit your house, annoying neighbors.

Special design and therapy might be required in these circumstances.

To keep away from sound touring by ducting, design for enough noise isolation in airflow ducts.

Noise from an air conditioner motor can improve over time on account of issues like worn bearings or rubber mounts, unfastened panels or fasteners, broken fan blades, or a worn compressor.

A rattling or whining sound might inform you the unit wants cleansing or upkeep. General upkeep is necessary to ensure the unit is operating correctly and never inflicting pointless noise.

However, when an older unit must restore it is usually cheaper to switch it with a more modern, quieter, and extra energy-efficient model.

What causes noise in your air conditioner?

1. Noise from the indoor unit

1) Collision sound of the machine: Fixing bolts someplace could be unfastened or rub, some spare elements may not match very effectively.

2) Flowing sound of the liquid: Refrigerant circulation or pressure change of refrigerant whereas switching on/off.

3) Sound of plastic items rubbing or deforming: Plastic pieces deform resulting from growth when hot and shrink when chilly. Or some spare parts could not match very properly.

2. Noise from the Outdoor unit

1) Collision sound of the machine:  Collision of the pipeline, fixing screws unfastened or deform attributable to rubbing.

2) Oscillation sound: Inappropriate installation method; the unit doesn’t match with the setup equipment very effectively or the compressor quivers acutely.

3) Sound of running fan motor:  Vane imbalance or distortion.

4) Sound made by cooling operation: Refrigerant circulation or vane distortion

5) Sound of working compressor: Something wrong with the compressor, corresponding to oil scarcity, valve slice distortion.

3. Noise from the entire uni

1)  Resonance sound :

  • The unit doesn’t match with the setup equipment very effectively
  • The entire unit resonates with the door and window.

2)  Collision sound of the machine: Collision of the pipeline, fixing screws unfastened or plastic items deform.

3) Sound made by compressor or motor: The compressor or motor makes irregular noise.

4) Flowing sound of condensed water: Condensed water is connected to the vane.

5) Sound of working fan motor: Vane imbalance or distortion.

How to fix a leaking air conditioner?

1. Make positive that every fixture and fittings are safe and never inflicting any extreme vibration or rattling.

2. Check rubber mounts and mounting brackets for deterioration and put them on.

3. Check to ensure the air-con unit and fan blades are away from all vegetation and particles.

4. Clean any dust grilles or air filters.

5. Does the unit want upkeep or changing? Older models may have a clear or upkeep, or chances are you’ll discover it higher and cheaper to switch them with a more modern mannequin.

6. Can you put in a barrier or enclosure? These may be efficient methods to scale back noise if a unit is effectively maintained and dealing correctly.

7. Do you need to limit the hours you utilize the unit? If the noise is annoying your neighbors at night time, then you could have to modify it off for sure hours

8. Move the motor? If you have to run the air conditioner and there are not many choices for upkeep, boundaries, or enclosures then chances are you’ll be required to relocate the unit additional away from neighbors.

If the unit is inflicting unreasonable noise, together with if it may be heard in a neighbor’s residence throughout nighttime hours (even with their home windows open), then chances are you’ll be required to take motion to scale back the noise.

It is extra sensible and cheaper to correctly design and set up an air conditioner than to attempt to repair issues later.

Why is my air conditioner not blowing cold air?

There are a few reasons why the unit is probably not cooling:

1. Select the COOL mode.

Ensure the unit is in COOL mode. Press the mode button till the COOL light.

2. Set the right temperature.

When first powered on the Air Conditioner is ready to 25c, use the Down arrow to cut back the temperature to the required degree, and offering the room temperature is above this then the cooling will begin

3. Close home windows and doorways.

Air conditioning depends on air circulation. It will cool the air in a room and re-circulate it to offer you a snug atmosphere.

 Please preserve the home windows and doorways closed as a lot as attainable to maximize efficiency and cut back vitality utilization.

4. Use the exhaust hose.

When cool air is created there’s additionally heat air. The exhaust hose takes the nice and cozy air and exhausts it by the exhaust hose. This Exhaust hose must be positioned by a gap reminiscent of a window or a wall exhaust package.

When putting the exhaust hose out of the window please attempt to preserve the window closed as a lot as attainable.

5. Other helpful data.

 It will take as much as 5 minutes for the Air Conditioning unit to offer most cooling, so as soon as

  • the temperature adjustment has been made, enable a bit of time for cooling to take impact.  If the room has reached the required degree, for instance, 19c as proven above, then cooling will cease however the fan will proceed to flow into the air, as soon as the room temperature will increase then the cooling will begin once more.

Why does my air conditioner leak?

The water collected from the air throughout the operation is collected within the water tray contained in the air conditioner, relying on how usually the air conditioner is used will rely on how usually it will be emptied.

You will even be alerted when the water is full because the W.F gentle will illuminate and the unit will cease working till empty.

It is at all times suggested to empty the water earlier than transferring the unit, this can keep away from water spilling onto the ground throughout the motion.

How to fix air conditioner leaking water?

Step 1. Raise the unit up

Step 2. Place a container under the unit to gather the water. The most quantity of water to be drained is 0.5l.

Step 3. On the again of the merchandise on the backside left is the water plug, take away and the water will start to slowly move.

Step 4. Once completed, put the plug again in place.

Why does the air conditioner keep cutting out?


If you chose 22c as your room temperature, and the room is 30c, then the air conditioner will begin the compressor and in around 5 minutes the chilly air will start to be produced

Once the room reaches 22c the compressor will cease, that is to cease cooling under the 22c set. The fan will proceed to flow into the air across the room.

Once the room temperature rises once more the compressor will routinely begin once more and chilly air will as soon as once more be produced.

Should you need the cooling to proceed then set the temperature of the air-con unit to decrease to 20c and the identical course will apply, solely the compressor, and cooling will cease as soon as the room reaches 20c.

Why are my windows fogging flowing out?

  • At  COOL mode operation, sometimes there is foggy air flowing out of the indoor unit, this is because the room’s humid air has been cooling rapidly.
  • The unit is normal while the indoor outlet is sending out some odor, because the inlet air may be mixed with the smell of furniture and smoke.

Why my air conditioner unit is not working?

Do you have an air conditioner and the air conditioner unit is not working? here is what to do

 we’ll present essentially the most potential causes and solutions for this issueS please follow the instructions below:


cause: Power failure

solution: Wait for the ability to be restored


Cause: The power is turned off

Solution: Turn on the power


Cause: The fuse is burned out

Solution: Replace the fuse


Cause: Remote control batteries are dead

Solution: Replace batteries


Cause: The Unit’s 3-minute protection has been activated

Solution: Wait three minutes after restarting the unit


Cause: Timer is activated

Solution: Turn timer off

Why my air conditioner unit starts and stops frequently?

Do you have an air conditioner and the air conditioner unit starts and stop frequently? here’s what to do

 we’ll show the most possible causes and solutions for this issueS please follow the instructions below:


Cause: There’s an excessive amount of or too little refrigerant within the system

Solution: Check for leaks and recharge the system with refrigerant.


Cause: Incompressible gas or moisture has entered the system.

Solution: Evacuate and recharge the system with refrigerant


Cause: The compressor is broken

Solution: Replace the compressor


Cause: The voltage is just too excessive or too low

Solution: Install a manostat to control the voltage

Why does my window air conditioner smell?

The unit might absorb odors from the surroundings (such as furniture, cooking, cigarettes, and many others.) which will be emitted during operations.

The unit’s filters have become moldy and should be cleaned.

why is my air conditioner not blowing hot air?

Do you have an air conditioner that is not blowing sizzling air? here’s what to do:

 we’ll present essentially the most potential causes and options for this concern please comply with the directions beneath:


Cause: The outdoor temperature is extraordinarily low

Solution: Use the auxiliary heating system


Cause: Cold air is getting into by doorways and windows

Solution: Make positive that each one door and home windows are closed throughout use


Cause: Low refrigerant attributable to a leak or long-term use

Solution: Check for leaks, re-seal if mandatory and high off refrigerant

Why air conditioner Indoor unit can’t receive the remote controller’s signal?

Do you have an air conditioner and the air conditioner Indoor unit can’t receive the remote controller’s signal? here’s what to do

 we’ll show probably the most possible causes and solutions for this problem please comply with the instructions beneath:


 Check item:  Whether it is interfered severely (such as static electricity, stable voltage)?

Solution: Pull out the plug. Reinsert the plug after about 3min, after which activate the unit once more.


Check item:  Whether remote controller is inside the signal receiving range?

Solution:  Signal receiving vary is 8m.


Check item:  Whether there are obstacles?

Solution: Remove obstacles.


Check item:  Whether a distant controller is pointing to the receiving window?

Solution: Select the correct angle and level the distant controller on the re- receiving window on the indoor unit.


Check item:  Is sensitivity of distant contro- decrease low; fuzzy show and no show?

Solution: Check the batteries. If the ability of batteries is just too low, please exchange them


Check item:  No show when working distant controller?

Solution: Check whether or not the remote controller seems to be broken. If sure, exchange it.


Check item: Fluorescent lamp within the room?


Take the remote controller near the indoor unit.

Turn off the fluorescent lamp after which attempt it once more.

What are the common issues with an air conditioner?

Issue1. The air conditioner operates abnormally

Cause: Whether there’s interference, corresponding to thunder, wi-fi gadgets, and so on

Solution: Disconnect power, put again power, after which activate the unit once more.

Issue2. Odors are emitted

Cause: Whether there’s an odor supply, such as furnishings and cigarettes, and so on.

Solution: Eliminate the odor source.

Eliminate the odor source.

Issue3. The cooling (heating) impact is just not good.


● Voltage is too low?

● The filter is dirty?

 ● Set the temperature is within the correct vary?

● Door and window are open?


● Wait until the voltage resumes usually.

● Adjust temperature to the correct variety.

● Close door and window.

●clean the filter

Issue4. The set temperature can’t be adjusted

Cause: Your required temperature exceeds the set temperature vary?

Solution: Set temperature varies: 16℃ ~30℃.

Issue5. Mist is emitted from the indoor unit’s air outlet

Cause: Indoor temperature and humidity are excessive?

Solution:  Because indoor air is cooled quickly. After some time, indoor temperature and humidity shall be lower and mist will disappear.

Issue6. No air emitted from the indoor unit


● Air inlet or air outlet of the indoor unit is blocked?

● Under heating mode, the indoor temperature is reached to set temperature?

● Heating mode is turned on just now?


● Eliminate obstacles.

● After reaching to set temperature, the indoor unit will cease blowing out air.

● To prevent blowing out cold air, the indoor unit shall be began after delaying for several minutes, which is a normal phenomenon.

Read also:

How to repair error codes proven within the window air conditioner?

Error code seems within the window display of indoor unit:

 • E0, E1, E2…

• P1, P2, P3…

• F1, F2, F3…

The unit might cease operation or proceed to run safely. If the indicator lamps proceed to flash or error codes seem, wait about 10 minutes. The drawback might resolve itself.

 If not, disconnect the ability, then join it once more. Turn the unit on.

If the problem persists, disconnect the ability and speak to your nearest customer support center.

After you read and follow this guide to air conditioner troubleshooting