
As we approach the scorching season, many users are facing uncertainties regarding how to properly maintain and inspect their air conditioners after a long period of dormancy.
1. Essential Insights on Air Conditioner Maintenance Before the Onset of Hot Weather
As we near the hot summer days, many users are puzzled about how to maintain and inspect their air conditioners after a prolonged period of 'hibernation'.
These days in the Northern region, the signs of scorching summer are becoming increasingly evident as temperatures continue to rise, sometimes exceeding 30 degrees Celsius. The oppressive heat makes many people uncomfortable. Many households are beginning to use their air conditioners after a long 'hibernation' period.
To prepare their air conditioning units for operation, many households have enlisted professional technicians for maintenance. However, there are also many households who are hesitant and worried because their air conditioners have been unused for a long time. They wonder if direct usage might have any adverse effects on their air conditioners – a valuable household appliance with significant importance during the upcoming heat waves.
Here are simple guidelines for testing and maintaining a single-unit air conditioner at home.
After months of dormancy, with the air conditioner hardly being used, users need to start it up and check its operational status.
When turning on the unit, if a foul odor emanates from the evaporator, it's likely due to mold buildup from prolonged inactivity. Running the unit for a while should dissipate the odor, but if it persists, the evaporator may need to be removed and cleaned, as mold can be detrimental to health.
If users detect a sewage-like odor during operation, it may be due to a direct connection of the evaporator drain pipe to the sewage system or gas trap without a proper trap, allowing odors from the sewage system or gas trap to backflow into the evaporator, causing unpleasant smells.

In the event of detecting a gas leak odor: the evaporator coil may be leaking gas. In this case, it's advisable to turn off the unit, open windows and use exhaust fans for ventilation. High concentrations of leaked gas can cause dizziness or unconsciousness if inhaled. Self-checking air conditioners without a technician.
If the evaporator is leaking water, the evaporator casing is condensing, air blows out as mist or water droplets, or the evaporator is frosting over, there are several methods to address these issues.
If the evaporator is leaking excessive water, it's likely due to clogged or cracked drain pipes. If water droplets are blowing out, the evaporator may be excessively dirty. In some cases, it could be a manufacturing defect where the evaporator has oversized gaps, allowing the fan to pull out water droplets.
When the evaporator frosts over, it's typically due to a malfunctioning or slow-turning evaporator fan. Promptly repairing the fan is crucial to prevent compressor damage (blockage).
In cases where the air conditioner fails to cool or inconsistently cools, there are several potential causes to check:
Incorrect operation mode settings on the remote: verify that the mode (Cool or Auto) is correctly set on the remote. Modes like Dry, Fan, Heat do not provide cooling. In some instances, setting the timer function may also result in no cooling. It's essential to carefully read the accompanying user manual to use the appliance correctly.
If there's a gas leak issue: it's easily checked by observing the two copper pipes connected to the outdoor unit. Both pipes, small and large, should remain dry and not cold to the touch (under normal functioning conditions, both pipes should have similar temperatures, around 5-7°C, and appear moist). The air blown from the outdoor unit should not be hot. Self-checking air conditioners without a technician.
During summer, it's crucial to adjust the temperature appropriately. The greater the temperature difference from the surrounding environment, the more electricity consumption. Adjust the temperature according to individual comfort levels. Additionally, excessively large temperature differentials are also detrimental to health.
A smart approach is to adjust the room temperature to be relatively close to the outside temperature. Also, it's advisable to change the room temperature every 4 hours by opening doors to let natural air in.
