You might start worrying when you first notice your aircon flashing red and green lights. After all, an air conditioner is an essential home appliance in Singapore. Without it, enduring the sweltering heat can quickly become uncomfortable and stressful!
It’s important to know there are multiple reasons for your air conditioner to flash red light or green light. Different air conditioning brands may have different flash codes, which is why it is essential to safely store away your owner's manual when you first install your air conditioning unit for your reference.
Some codes are universal, such as a blinking red light which often indicates a problem with the internal mechanisms of your air conditioning unit. The flashing light informs you that the system has detected a problem that needs to be inspected immediately. Other light codes are as follows.
Causes of Red and Green Lights on Air Conditioner
Troubleshooting Guide
Use Your Senses
A blinking light may or may not be a cause for alarm—it all depends on the brand and model of your unit. The best way to figure out if the flickering light is a cause for concern is to read the manual and use your senses.
See if the unit is dirty, listen for any strange noises, notice any foul smells, and check if the air coming from your air conditioning unit is warm, not cold. In Singapore’s humid climate, air conditioners need to work extra hard, making them more prone to dust accumulation and overheating. If a flashing light is combined with any of these symptoms, it could indicate an underlying problem with your unit that needs attention.
Clean the Air Filter
The air filter in the air conditioning unit works to trap dust, debris, and other particles to prevent them from entering the system. In most of our clients, due to Singapore’s high humidity and frequent aircon usage, air filters can get clogged quickly. This can reduce airflow and force the system to work harder. A dirty filter can also trigger blinking lights on the AC unit, as it affects the system's ability to circulate air properly.
Troubleshoot the Thermostat
The thermostat controls the temperature settings and operation modes of your AC unit. If it's malfunctioning or set incorrectly, it can lead to blinking lights on the unit. Ensure that the thermostat is set to the correct mode and temperature. If the thermostat is not responding or displaying incorrect information, it might be malfunctioning.
One common issue we’ve seen in Singapore homes and offices is battery failure in wireless thermostats. To fix this, check and replace the batteries if needed. Also, ensure there are no loose connections in the wiring. If the thermostat continues to malfunction, consider replacing it with a new one.
Shut the Unit Down
When in doubt, shut the unit down, and unplug the aircon. This will avoid any further damage to your unit, and make it safe for you to inspect the interior. Even when your unit is working properly, there may be an issue that needs immediate attention in the inner workings of the unit.
Book Luce Professional Service!
If the simple troubleshooting above doesn’t help, the best way to solve the aircon problem is by consulting with an experienced HVAC technician and booking their professional service.
Our team at Luce Aircon is one of the best and most reliable HVAC service providers that you can find in Singapore. Whether you've lost your error code manual, or you can't make sense of the blinking lights on your AC, our professional technicians will be able to diagnose and repair the problem for you!
Aircon problems? Luce has got you covered! Give us a call today, and we'll get your unit up and running again in no time!
