Resolving Yellow Blinking Light Issue on Sharp Air Conditioners

After using Sharp air conditioners for a while, it's common to encounter malfunctions signaled by continuous blinking yellow lights. So, what should you do in such cases? Let Mytour Supermarket guide you through resolving this issue in the following article.

Effective Solutions for Resolving Yellow Blinking Light Issue on Sharp Air Conditioners

Most air conditioning products on the market nowadays come equipped with indicator lights. These lights serve to inform you about the operating status, on/off state of the machine. Moreover, they also serve to indicate that the machine is unstable by continuously flashing error signals.

Lights help better control the machine

When the yellow light on the Sharp air conditioner flashes error signals, you can refer to the following steps to accurately determine the exact error the machine is experiencing.

Step 1: Press and hold the AUX button on the indoor unit of the machine for about 5 seconds.

Step 2: Wait for a moment, the machine will display the error code.

Note: Some machine models may not have an AUX button to perform the error code test. In this case, checking and detecting the error code should be done by a professional to ensure no further complications arise for the machine.

Below are some common causes and remedies for the error when Sharp air conditioners flash the yellow light.

A non-functioning indoor fan is a common cause of Sharp air conditioners flashing the yellow light error.

Cause: The indoor fan not working may be due to a faulty capacitor, power cord, or broken connection.

Power cord is broken

Solution: 

+ Use a screwdriver to remove the air conditioner cover to access the control circuit inside. Check if the power cord from the control circuit to the fan motor is broken. If so, reconnect it ensuring the wire colors match, which will resolve this issue.

+ If the connecting wire is still intact, use a multimeter to check if the fan motor is still operational. If the fan motor is damaged, replace it with a new one for the air conditioner.

Use a multimeter to check

Note: Diagnosing and repairing faults with the indoor fan is quite complex and requires high technical skills. Therefore, when encountering this situation, it's advisable to contact a reputable air conditioner repair technician for proper and safe assistance.

When the air conditioner is low on refrigerant, the cooling efficiency of the machine decreases. At this point, the machine will indicate by flashing the yellow light.

Cause: Air conditioners experiencing low or no refrigerant can be due to the following reasons:

+ Incorrect installation process, including faulty pipe fittings, solder joints, or leaks.

+ Extended use of the air conditioner leads to corrosion of the copper pipes.

Refrigerant line in the air conditioner is leaking

Solution: 

+ Inspect the copper pipes to identify leakage points.

+ Weld the detected leakage points.

+ If there are too many leakage points on the pipes, consider replacing them with new ones.

+ Use a multimeter to measure the amount of gas needed to recharge and proceed to recharge the gas for the machine.

+ Use a vacuum pump to recheck the pipes to ensure they are sealed and there are no more leaks.

Recharge gas for the air conditioner

Note:

+ Ensure that the newly added gas matches the type of gas the air conditioner is using.

+ Avoid adding large amounts of liquid gas continuously to the air conditioner. This will shorten the lifespan of the machine.

+ Therefore, to ensure safety for yourself and the quality of the machine, you should contact a reputable air conditioner maintenance center for assistance in checking and recharging gas for the air conditioner.

One of the other reasons causing air conditioners to not operate stably is the accumulation of dust on both the evaporator and condenser coils.

Air conditioners accumulate excessive dust

In addition to inefficient operation, the buildup of dust in air conditioners also significantly affects health, especially respiratory-related illnesses. Therefore, to prolong lifespan, ensure efficient operation, and safeguard user health, regular and periodic cleaning of air conditioners is essential.

Regular maintenance of air conditioners is advisable

The machine block and circuit board are two crucial components. When these parts malfunction, it can decrease the cooling efficiency or even cause the unit to stop working altogether. An indication of this condition is when the air conditioner's light continuously flashes yellow.

After checking for the above causes but finding no faults, it's possible that the unit has issues with these components.

Inspecting and repairing the machine block and circuit board requires advanced technical expertise. Therefore, it's advisable to contact a reputable maintenance center to ensure safety.

Contact a reputable air conditioner maintenance center

Here is the information about the common causes and solutions when Sharp air conditioners encounter the issue of flashing yellow lights and unstable operation. You can refer to and find timely solutions to save time and not disrupt your family's activities.