Why Is My Haier Air Conditioner Not Cooling? (12 Issues Fixed!)

Is your Haier air conditioner not cooling, and do you plan to call an expert? Perhaps you should wait and try troubleshooting it – and it starts with identifying the likely fault.

A Haier air conditioner may fail to cool because it is undersized, lacks enough clearance, or due to a wrong mode, higher thermostat setting, or dirty filter or coils. It could also be due to air leakage, unit blockage, an obstructed or extra-long hose, low refrigerant, or a faulty remote or part. 

And while mentioning a defective part, you should check the compressor, thermostat, thermistor, run capacitor, and control board for faults. If any of these components fail, likely, your air conditioner won’t blow cold air.

This guide will outline what might go wrong in each case and how to fix it. So, let’s jump into it!

In a rush? Below is a quick troubleshooting guide for a Haier air conditioner that won’t blow cold air.  

Quick Troubleshooting Guide for A Haier Air Conditioner Not Cooling

Why Is My Haier Air Conditioner Not Cooling?

If your Haier air conditioner won’t get cold, it’s likely due to one of the 12 issues discussed below:

1. Unit Under sizing (The AC Is Smaller)

Your Haier air conditioner should match your space. If it’s smaller, it won’t be able to cool your room; even if it does, you are less likely to feel the cold air.

So, before you assume something is wrong with your AC, you must confirm its capacity. 

Fix 

Consider replacing the air conditioner if it’s smaller for your space. Below is a table to guide you:

2. Insufficient Clearance 

The air conditioner should have adequate space around it to facilitate optimum airflow. If the unit is too close to the wall, the air conditioner may fail to cool. If it does cool, it won’t do it effectively. 

Fix 

Move the AC away from the wall to create enough clearance around it. 

3. Wrong Mode 

If you want your Haier air conditioner to blow cold, set it on Cool Mode. Other modes, especially Dry Mode, Fan Mode, and Heat Mode, do not promote cooling. 

For example, Dry Mode promotes dehumidification, Fan Mode promotes good airflow but not necessarily cold air, while Heat Mode facilitates heating. 

Fix 

Set your air conditioner on Cool Mode if it’s on any other mode. 

4. Higher Thermostat Setting 

For the air conditioner to cool your space, the thermostat should be set at a lower temperature (below 75⁰F).

If the air temperature is higher than that, the air conditioner will blow hot, and you don’t want that. 

Fix

Lower the thermostat’s setting if it’s higher than 75⁰F.

5. Dirty Filter 

Over time, the air conditioner’s filter amasses dirt which can block it and interfere with airflow. The air conditioner won’t cool your space if cold air doesn’t flow. On the contrary, the indoor air may become warmer. 

Fix 

Inspect the AC’s air filter for possible dirt clogging and clean it if it’s filthy. Haier recommends cleaning the air filter weekly or, at the very most monthly.

6. Dirty Coils

The condenser coils, whose job is to dissipate the absorbed heat, can also clog with dirt. Once that happens, they cannot absorb heat, so the Haier air conditioner doesn’t cool. 

The compressor may run continuously to promote cooling, but the AC won’t blow adequate cold air. 

Fix 

Inspect the condenser coils for dirt clogging and clean them. 

7. Air Leakage 

Cold air can escape outside through gaps in the walls and around the windows and ceiling. Similarly, hot air can leak through the same gaps and interfere with indoor air temperature. 

In both cases, the air conditioner cannot maintain a constant cool temperature indoors. 

Fix 

Seal any gaps in the walls and around the ceilings and windows. Also, reduce the number of windows you open and how often you do it to retain cold air indoors. 

8. Blocked Unit 

If thick curtains or drapes block your air conditioner, they inhibit airflow. So, your AC may fail to cool. 

Fix 

Remove any curtains or drapes obstructing the air conditioner to encourage proper airflow. 

9. Obstructed or Extra-Long Hose 

If the exhaust hose has kinks or excessive bends, they’ll block hot air from going out, interfering with the AC’s cooling. 

Likewise, if the hose is extra-long (more than 5 feet), hot air will take much longer to get out, and the AC will fail to cool properly. 

Fix 

Straighten the exhaust hose to eliminate any kinks; if the hose is longer than 5 feet, replace it with a shorter option.

10. Insufficient Refrigerant 

It takes the right amount of refrigerant to absorb warm air from your indoor space and promote a cool ambiance. Sadly, sometimes the refrigerant leaks, making it harder to absorb heated air, resulting in your Haier air conditioner not getting cold.

An expert can help you check the refrigerant level. 

Fix 

Have an expert not only check the refrigerant level but also refill it.

11. Faulty Remote 

If your air conditioner is not responding to the remote when you adjust the temperature settings, it could be that the remote is faulty. But before arriving at such a conclusion, consider replacing the remote batteries, especially if it has been a while. 

Fix 

If the remote control doesn’t work after a battery change, try operating the AC without the remote. If it starts working, the remote is faulty, and you should replace it.

12. Defective Part 

We conclude this Haier air conditioner troubleshooting with parts that can prevent the AC from cooling if they fail. These parts include the following:

• Compressor – If the compressor doesn’t run for whatever reason, the refrigerant, which absorbs heat, will fail to circulate, preventing the AC from cooling. 
• Thermostat – A malfunctioning thermostat fails to relay signals to the compressor and fan, preventing the AC from cooling. 
• Thermistor – A defective thermometer won’t detect any air temperature changes and is, therefore, likely to prevent the AC from cooling. 
• Run Capacitor – A burnt or worn-out run capacitor does not allow the compressor to run, and if the compressor doesn’t run, the AC won’t blow cold.
• Control Board – Consider the possibility of a defective AC control board. The air conditioner won’t blow cold air if that’s the case. 

Fix 

Consider replacing any of those five parts if they are faulty. But to be sure, have an expert check them. 

Haier Portable Air Conditioner Not Cooling

There are different explanations for a Haier portable air conditioner not cooling. The reason could be any of the following:

• The air conditioner could be too small for the space (undersized)
• There is a lack of clearance around the air conditioner, preventing proper air circulation
• The temperature setting is too high (above 75⁰F), or you are using the wrong mode (instead of the ‘Cool Mode’)
• Cold air is seeping outdoors, or warm air is seeping in through the gaps 
• The refrigerant level has dropped, perhaps due to a leakage
• The exhaust hose could be too long (over 5 feet) or kinked 

Haier Window Air Conditioner Not Cooling

As far as a non-cooling Haier window air conditioner goes, the issue could be any of these:

• Not setting the air conditioner on Cool Mode 
• Higher thermostat setting (above 75⁰F)
• Wrong size (smaller unit)
• Blockage by curtains or branches outdoors 
• Dirty air filter or condenser coils
• Refrigerant leakage 
• Faulty components, especially the compressor, thermistor, run capacitor, or thermostat

How to Make Haier Air Conditioner Colder?

You can do different things to make your Haier air conditioner colder. Among them are:

• Replace or clean the air filter as often as possible (preferably monthly)
• Install fans to supplement the air conditioner in keeping your room cool 
• Set the thermostat to a more uniform low setting 
• Turn off nearby heat-emitting appliances such as an oven, store, or microwave
• Fix any gaps around the windows and walls to prevent air leakage
• Remove any obstructions around the outdoor or indoor unit 
• Move the air conditioner from direct sunshine 
• Regular air conditioner maintenance

People Also Ask 

1. Why Is My Haier Ac Not Blowing Cold Air?

Your Haier AC is not blowing cold either because of a dirty air filter, wrong mode, higher thermostat setting, filthy coils, or air leakage, primarily through gaps. It could also be that the AC is undersized or blocked. 

2. How Should I Reset a Haier Air Conditioner? 

You can reset a Haier air conditioner using its reset button. You can locate the reset button on the remote control or the power cord and press it to reset the air conditioner. 

3. Why Is My AC Running but Not Cooling?

Your AC is running but not cooling because the air filter or condenser coils are dirty, the AC is blocked or lacks sufficient clearance, or it’s set on a different mode, not the Cool Mode. 

Other issues include air leakage, an obstructed hose, or low refrigerant. 

Closing Thought On the Haier Air Conditioner Not Cooling: 

Above are the issues to consider when your Haier air conditioner won’t cool. Whether you are troubleshooting a Haier portable air conditioner or a window-mounted option that won’t cool, consider the possibility of an undersized unit, insufficient clearance, wrong mode, higher temperature setting, or dirty filter or coils. 

Don’t forget air seepage through spaces, a kinked or lengthy exhaust hose, a refrigerant leakage, or a defective remote or component.

Also Read:

• Why Your Honeywell AC Won’t Cool