What is the reason why the newly installed central air conditioner is not warm or cold?

Generally speaking, the heating effect of air conditioning is not good, partly because there is too much dust in the air filter, and the air outlets of internal and external machines are blocked by foreign objects. The function of the filter screen is to absorb the dust in the air. If there is too much dust and it is not cleaned in time, it will hinder the air circulation, resulting in a decrease in the air volume at the air outlet and insufficient heating capacity. This is not a fault, but a maintenance problem of the air conditioner. As long as the air filter is taken down and cleaned regularly, it will return to normal.

2. Fluoride deficiency

Fluorine deficiency may also be one of the factors leading to failure. At present, most people use heat pump or heat pump plus auxiliary electric heating air conditioning. The working principle of these two air conditioners is to absorb heat from outdoor air when Freon evaporates. When the outdoor temperature is low, the temperature difference with the evaporation temperature of Freon is small, the heat exchange effect becomes worse and there is less hot air. Therefore, if it is an old model with a long service life, the compressor will be more worn. When the outdoor temperature is lower than 0℃, the heating effect of air conditioner will be difficult to meet.

In addition, if the nut at the copper pipe horn is not tightened when installing the air conditioner, or the machine has been moved, the problem is probably caused by lack of fluorine. In addition, by-wire faults are also common. For example, the external machine is not working, mostly because of the capacitor, temperature probe or motherboard.

3. Other reasons

Many people will be surprised, air conditioning is still good in summer, why not in winter? In fact, the cooling and heating parts of air conditioner are separated, so the cooling function is normal and the heating is abnormal. The problem may be the four-way solenoid valve or its control circuit, or the over-temperature fuse of AC contactor, thermostat and electric heater and its power supply circuit are faulty. These faults can only be determined after the maintenance personnel or professional maintenance personnel of the air conditioner manufacturer come to the door for inspection.