4 Ways to Troubleshoot Your Mitsubishi Starmex Air Conditioner (Part 2)

4 Ways to Troubleshoot Your Mitsubishi Starmex Air Conditioner (Part 2)

Are you here after going through the various potential problems causing your Mitsubishi Starmex air conditioner in our earlier article? 

Stay calm. As we’ve mentioned before, it’s normal to run into problems even if you have an aircon from a reputable and highly established air conditioner brand. 

Even if you aren’t, you can still find out different reasons why your aircon is running into trouble. By doing so, you can easily troubleshoot and diagnose the cause before deciding on your next best course of action. 

It’s also key to diagnose problems early before they worsen! Knowing more about your air conditioner and how to manage troubles yourself will be very helpful towards maintaining and prolonging your unit’s lifespan.

Let’s dive right in!

Why Does My Mitsubishi Starmex Aircon Blink? - Fixing Aircon Blinking Light Issues

If you’ve noticed that your aircon is blinking, it’s because this is a self-diagnosis mechanism that is effective in informing you that something is wrong.

You can easily identify what’s wrong by using the remote control and having a look at the error code. 

Loose Bottom Louvre

If the light is blinking, you can first inspect the clasp of the unit’s bottom louvre. If you notice that this compartment isn’t closed tightly, it can be the reason why the aircon light is flashing. 

This is because a loose or slightly open louvre can lead to an automated reaction. It involves two repeatedly flashing lights which is a safety attribute that the company uses throughout its Starmex models.

Luckily, this is a simple issue that can be resolved by adjusting and fixing the louvre back into place. 

Aircon Water Leaking Issues 

A primary reason for a malfunctioning Mitsubishi Starmex aircon is because of an aircon water leak. It isn’t always a cause of worry, however - you can attempt to resolve it yourself before calling a professional. 

First, detach the air conditioner from the wall carefully to ensure that it doesn’t get damaged further. If it’s too heavy for you, get someone capable to help you finish this process. 

Next, inspect the primary drain pipe to remove water that has condensed outside. If it’s clogged up due to natural reasons, you’ll find that it’s difficult to drain the water out. 

You can consider using a larger pipe with a stronger water pressure to wash the debris out. Use bleach to completely clean the drain pipe. 

Lastly, dry all the compartments under the sun before you fix the unit back together again. If you’re not sure of this procedure, get an expert to help you perform the necessary steps instead.

Alternatively, you can also check to see whether your aircon filter is too dirty and clogged. If it is, simply wash it clean or call in an expert to perform chemical cleaning if it’s difficult to wash out. 

Insufficient Cooling 

Apart from an air conditioner that’s blowing warm air instead of cool air, another problem also happens when the cooling isn’t enough. 

This makes it energy wasting and ineffective in achieving the desired cooling temperature and comfort throughout the entire time it’s turned on. 

One easy way to check if this is the problem is to peer into the indoor unit and see whether there’s dust or dirt that may be causing a blockage of cold air. 

You can also inspect the outdoor condenser unit to see whether it’s filthy. You need to clean and make sure it’s completely free of dirt and debris if you find that it requires a thorough wash. 

The last possible reason is insufficient refrigerant in the air conditioner, which means that you need to call in an aircon servicing company to topup the gas for you. 

Leaking Coolant 

The refrigerant is responsible for making the cool air you enjoy every time you use your air conditioner. If your aircon’s refrigerant levels fall below necessary, it can lead to a drop in performance. 

In order to combat this situation, you can engage a professional aircon servicing company to help you perform routine servicing and maintenance. During which, the professional will conduct a check to make sure that your coolant levels are adequate and if not, proceed to top up the gas accordingly. 

Mechanical Problems 

Went through all the potential problems listed above and in the first part of this guide? Click Here

You may have to consider the possibility that it’s because of mechanical trouble. The main problem with such issues is that you cannot identify them easily. It therefore requires an aircon servicing expert to diagnose the exact cause and proceed to repair it accordingly. 

Find a reliable and trustable servicing technician to do this for you. 


If you’ve reached this point, it means that you’ve most likely successfully fixed the issue that’s troubling your Mitsubishi Starmex air conditioner. 

If you haven’t, unfortunately, consider getting a professional servicing company to help you. You can ring us up at +65 6261 0081 for any questions you have! We’ll be more than happy to assist you as soon as possible. 

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