Why can't the air conditioner accept remote control signals?

1. The power supply is not connected properly or there is no electricity, the power cord socket is in poor contact, or the power cord is thin or aging.

2. Low power supply voltage. Starting voltage of constant frequency air conditioner: 187V, voltage fluctuation range: 198-242V, starting voltage of variable frequency air conditioner: 156V, voltage fluctuation range: 176-264V. It is recommended to install a voltage regulator at home.

Second, the remote control reason:

1, the screen appears garbled or frozen. Press the reset key to release, or the battery is low.

2. The temperature is not displayed. In air supply or automatic mode, the remote control does not display the temperature.

3. The receiver head is broken or can't work normally due to moisture. Check the transmission of remote control signal. Aim the digital camera (or mobile phone) at the transmitter of the remote control and press any button of the remote control to see if there is an infrared signal.

4. The remote control mode is incorrect, or the temperature setting does not meet the starting conditions. When cooling, the set temperature should be less than the indoor temperature, and when heating, the set temperature should be greater than the indoor temperature.

5. The battery of the remote controller is low, which will lead to short remote control distance or no remote control. It is recommended to take out the battery of the remote controller when not using the air conditioner, and reinstall or replace it when using it.

Third, the protection function:

1, protection. In order to protect the life of the press, a protection circuit is designed in the control circuit of the air-conditioning computer board, and the press will start after 3 minutes.

2. Prevent heating and cold air. When air conditioning is used for heating, when the temperature of the indoor unit coil is lower than a certain value, the indoor unit does not operate, and generally starts to work after preheating for 3-5 minutes.

3. The computer program of air conditioner is disordered, which makes the machine unable to carry out the scheduled work.

4. Function locking protection. Some models have a child lock function. If you are in lock mode and can't do anything, you can release it according to the instructions.

Extended data:

Maintenance of common faults of air conditioner:

Symptoms: The air conditioner freezes.

1, air conditioner freon is insufficient.

Insufficient or excessive refrigerant in air conditioner: For air conditioner, if the refrigerant is insufficient, it may be that the evaporator pressure is too low, thus freezing, so just add enough refrigerant.

If there is too much refrigerant in the air conditioner, it may also cause the air conditioner to freeze. Because excessive refrigerant may flow to the evaporator of the air conditioner and cause it to freeze,

Solution: Ask professionals to deal with fluorine leakage in air conditioners.

2. There is something wrong with the throttle valve

If the cooling capacity and temperature of the air conditioner are set normally, but the temperature of the air outlet cannot be detected, it is likely that there is something wrong with the throttle.

The evaporator of the air conditioner is dirty.

The freezing of the air inlet of the indoor unit is not only the phenomenon of evaporator freezing. The evaporator will freeze because there is too much refrigerant or dirt on the filter screen, resulting in smaller airflow, smaller air heat exchange, incomplete evaporation of refrigerant, resulting in liquid compression and freezing of the compressor oil return pipe. Drain some refrigerant properly and clean the filter screen or evaporator fins.

4, air conditioning compressor failure

If the compressor is used for a long time, it may be damaged or its power may be reduced, which may cause the air conditioner to freeze.

Solution: Add refrigerant to the compressor to see if it can be solved. If it is not handled properly, only the air conditioner compressor can be replaced.