1、 Outdoor temperature is too high

There are many people indoors and the external environment temperature is high. The air cooler is operating at full load, and the air blown out from the inlet is cold but the room temperature cannot drop. This is not a fault. When the ambient temperature exceeds 33 ℃, the external heat infiltration increases, which increases the cooling load of the air cooler; If there are many people in the room, such as a 20m2 room with a cooling capacity of 2500W, and there are 10 people sitting still in the room. The heat dissipation per person is about 120W, and a total of 1200W for 10 people requires half of the cooling capacity of the air cooler. At this point, the cooling capacity of the air cooler seems insufficient, and the room temperature cannot be lowered.

2、 Power supply voltage is too low

Causing household air coolers to be difficult to start, stop after starting, or have blown fuses. This is not a malfunction, the power supply voltage is too low. As long as the power supply reason is checked, if it is due to low grid voltage, the user should install a power stabilizer to make the voltage reach 220V for the air conditioner to function normally.

3、 Filter screen accumulates a lot of dust

The room temperature cannot be lowered, so turn on the strong cold mode. The exhaust volume of the air outlet is not large, which is due to the accumulation of dust in the air filter screen, blocking the air circulation and causing the cooling capacity inside the machine to be unable to be carried out in a timely manner by the flowing air, resulting in a lack of cooling capacity. This is not a malfunction, as long as the filter screen is removed and cleaned, it can be restored to normal.

4、 Strong wind blocking also causes loud noise

When the fan is running at high speed and in strong cold mode. Vibration and loud noise are normal phenomena.

5、 Improper adjustment of temperature controller

The rational function of refrigeration is not fully utilized, and the temperature controller is improperly adjusted. Causing the room to not cool down, adjusting the Ruibo Hui thermostat can solve the problem.