Troubleshooting tips for bad cooling effect!

Troubleshooting tips for bad cooling effect!

After the inverter reaches the temperature point, it reduces the frequency and causes the outlet air temperature to rise. A small number of users complain about the poor cooling effect of the air conditioner because of the difference in body temperature or the high outlet temperature. If the cause of such problems is not accurate, it will cause repeated repairs and cause user complaints. Today, share the following technical guidance materials.

　　 1. Reason analysis

　　 There are many reasons for poor air-conditioning effect. After-sales treatment should be investigated step by step, and the cause should be determined before processing. The specific possible reasons are as follows:

　　 1. The user settings are unreasonable;

　　2, the system refrigerant leaks, or improper installation is mixed with air;

　　3, the system is blocked;

　　 4. Insufficient indoor and outdoor air circulation;

　　 5. The outdoor and indoor temperatures are too high;

　　 6. The cooling/heating load is inappropriate.

　　 2. Investigation plan

　　 For the different reasons above, the specific troubleshooting and handling plans are as follows:

　　 1. The user settings are unreasonable

　　① The set temperature is unreasonable

　　 Ordinary fixed-frequency air conditioners have poor temperature control accuracy. For example, when the temperature is set to 27°C, the indoor temperature reaches about 24°C, and it will frequently stop until the temperature point, and the room temperature fluctuates greatly. Run series inverter air conditioners have high temperature control accuracy, the room temperature is maintained near the set temperature, and generally does not stop until the temperature point, which has better comfort and energy saving. For a small number of users due to the habit of using air conditioners, if you need a cooler effect, you can directly lower the remote control setting temperature. Compared with ordinary air conditioners, even if the set temperature is lowered, Run series air conditioners have lower energy consumption and better comfort.

　　② The setting wind speed is unreasonable

　　Some customers like to open low windshield or silent gear, the cooling effect is slightly worse than conventional windshield. In order to ensure the mute effect, there are certain restrictions on the frequency. If you want to improve the room temperature drop effect, it is recommended that the user set an ultra-high windshield or a high windshield at the beginning of the startup, and then adjust to a low windshield after running for 30 minutes.

　　2, system refrigerant leakage

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　　 Refrigerant leakage is often the main cause of poor cooling and heating effects. Therefore, when you encounter complaints about poor performance, first consider troubleshooting the problem of refrigerant leakage. At the same time, if the installation is improperly mixed with air, it will also affect the refrigeration effect. If the system is mixed with air, the pressure of the pressure gauges on the high and low pressure sides will be too high. After confirmation, vacuum and fill the refrigerant again.

　　 3. System blockage

For newly installed or repaired machines, it is necessary to confirm whether the valve is fully opened. For other system blockage problems, please refer to Section 34 of the "Home Air Conditioner Maintenance Guide" issued by the Training Department; after ensuring that the valves are all opened, Go to investigate other situations. Common refrigeration system blockages include capillary blockage, expansion valve stuck, pipe collapse, etc. If dirty blockage occurs, poor refrigerant circulation will directly affect the refrigeration effect, which can be done by checking the high and low pressure pressure and whether the evaporator has a cool feeling. determination.

　　4. Insufficient air circulation inside and outside

　　 Insufficient indoor and outdoor air circulation will cause deterioration of the heat exchange between the two devices, and the cooling capacity of the air conditioner cannot be used. The possible reasons are:

①The installation position of the internal machine is not suitable. Hang up: the installation position is too high, close to the ceiling, causing poor airflow, the temperature field in the room cannot flow effectively, or the design of the apartment is unreasonable; Open curtains to install;

②When the outdoor unit is installed at an inappropriate location, ensure that the outdoor unit is installed in a well-ventilated environment; if the outdoor unit must be installed in blinds, the exhaust outlet should be as close as possible to the blinds, and it is best to negotiate with the user to remove some of the blinds to ensure sufficient air circulation Air volume.

　　③ Dirty indoor and outdoor heat exchangers: clean the dust deposited on the surface of the heat exchanger.

④The air filter is dirty: clean the filter.

　　5, the cooling/heating load is inappropriate

　　①The room area does not match the size of the machine. Large rooms are equipped with small machines, and the cooling effect is not good.

　　②The room has poor thermal insulation performance, serious cooling loss, or doors and windows are not closed. Sun protection board can be installed appropriately. If the maximum air condition is still insufficient, it is recommended to replace the air conditioner.

　　6, the outdoor temperature is too high

　　 When the outdoor temperature of the inverter exceeds 40℃, its cooling effect will gradually attenuate (compared with its own).

　　 The above troubleshooting ideas are for your reference. I hope everyone encounters a machine with a poor cooling effect, carefully check and analyze the specific reasons.