Why won't the air conditioner start? Causes and quick troubleshooting

An air conditioner failing to start is a common issue, yet not everyone knows how to deal with it. In this article, Mytour will help you understand why the air conditioner won't start and provide quick and effective troubleshooting tips.

Below are common reasons that prevent the air conditioner from functioning:

If the device is not operating and the signal light is not on, there may be an issue with the power supply. It is likely that the power plug is loose, the circuit breaker is not on, the fuse is blown, the electrical connections are loose, or the wiring is damaged.

Power supply problems can cause the air conditioner to malfunction.

Another reason for air conditioner malfunction is a faulty control (due to stuck buttons, dirty infrared sensors) or depleted batteries. Consequently, the air conditioner cannot receive operational signals remotely.

If your regular air conditioner suddenly shuts off with a small 'click' sound, it may be operating beyond its capacity. In such cases, the safety switch will automatically disconnect to ensure safety.

After prolonged use, essential components like circuit boards, capacitors, and the heat exchanger unit may undergo damage, rendering the air conditioner inoperative.

Many people overlook this cause despite its crucial importance. Gas leaks, excess or insufficient refrigerant can lead to uneven operation or failure to start the air conditioner, even posing an increased risk of explosions.

Insufficient or excess gas can also cause the air conditioner to cease functioning.

To address the issue of the air conditioner not starting, you can apply the following methods:

This is the first thing you should check if the device encounters problems. In this regard, systematically inspect the following components:

           + Check the power plug: If the plug is loose, secure it tightly. Alternatively, you can unplug and plug it back in for a test.

           + Inspect the fuse: If you find the fuse burnt or faulty, avoid replacing it yourself without experience. Instead, seek the assistance of an air conditioner repair specialist.

           + Examine the wiring: For this inspection method, it's advisable to call an air conditioner technician to check both internal and external wiring for safety.

There are three cases of control malfunction:

2.2.1 Stuck buttons

On the remote, if the buttons feel depressed or lack responsiveness, it's possible that the buttons are stuck. In this case, you can use a screwdriver to open the control circuit board and thoroughly clean the rubber buttons. Then, apply conductive paint to the inner surface of the rubber buttons and let it dry for 72 hours. Afterward, use a cotton swab to clean the control circuit board, reassemble the components, and use it as usual.

You can remove the control for fixing stuck buttons.

2.2.2 Dirty Infrared Sensors

If you notice the infrared sensors on the top of the remote are dirty, use a dry cloth to clean them and continue using as usual.

2.2.3 Control Issues with Batteries

If the remote screen appears dim, it indicates a battery problem. In this case, remove and reinsert the batteries, then gently tap the back of the control to address any loose battery issues. If you still can't press buttons, consider replacing the batteries as the remote might be out of power.

When suspecting the air conditioner is tripping due to overload, you can check the circuit breaker at the electrical panel or the disconnect box. If you notice any tripped breakers, simply reset them and restart the air conditioner. If the breakers continue to trip, it indicates an overloaded circuit. In this case, contact a repair technician and avoid resetting the breakers to prevent potential hazards.

If it's determined that the air conditioner is malfunctioning due to internal motor issues, refrain from attempting DIY repairs and instead, contact a professional air conditioner repair technician. They will inspect the circuit board, condenser and evaporator coils, air conditioner fins, fan motor, and replace components if necessary.

In cases where the air conditioner has been in use for an extended period and experiences gas depletion or excess gas from a previous refill, resulting in the air conditioner failing to start, technicians will address this issue by ensuring the appropriate gas level for optimal operation.

If there are internal component failures, it is advisable to call a professional air conditioner repair technician for safety.

To extend the lifespan of your air conditioner, pay attention to the following aspects:

           + Read the user manual carefully before usage to avoid improper use that can lead to air conditioner damage.

           + Regular maintenance every 3 - 4 months ensures the air conditioner's quality, detects issues promptly for timely resolution, and mitigates risks.

           + Frequently clean the condenser coil as it is located outdoors and prone to obstructions like dust and leaves. Excessive build-up can increase power consumption and hinder functionality.

           + Replace the filter every 30 - 60 days depending on usage frequency to enhance overall efficiency and ensure the longevity of the equipment.

           + Clean the air ducts annually as dirty ducts can slow down the cool air flow, leading to increased electricity consumption.

           + Use the air conditioner in enclosed spaces to limit the escape of cool air, preventing the air conditioner from operating at high capacity and reducing equipment lifespan.

           + Turn off the air conditioner when not in use to avoid overloading and rapid deterioration of the cooling system.

Here, Mytour has addressed your concerns about why the air conditioner won't start and provided solutions for troubleshooting when the device encounters issues. We hope this article has provided you with valuable information, and you can now feel at ease when your air conditioner faces problems!