Central air conditioner What are the reasons why it does not refrigerate:
Reason 1: The filter block is blocked
Home central air conditioner has been using it for a long time. Dust in the room will inevitably accumulate on the filter. The more dust, the more accumulation. As a result, Z will eventually block the filter. This causes the air conditioning indoor unit to fail to return to normal. No hot air. If this is the reason, you just need to clean the filter.
Reason 2: Insufficient refrigerant
Insufficient refrigerant, commonly known as "fluorine", the temperature change of the indoor temperature control room in the control of household central air conditioners is achieved through the condition of the refrigerant. If the system is insufficient refrigerant, the heating work cannot be completed and the heating effect cannot be achieved. If this problem is confirmed, professional and technical personnel are required to check whether there are any leaks in the system. In this agent, the refrigerant is charged directly without leakage.
Reason 3: The weather is too cold
When the outdoor temperature is low and the humidity is high, the outdoor heat exchanger of the air conditioner will frost, reducing the heating effect. If the outdoor temperature is very low, the air conditioner won't even turn on. In addition, too low voltage may directly affect the heating effect of the air conditioner.
Reason 4: shutdown valve and four-way valve fault
Currently, many air conditioners are heat pump type. If the reversing valve used to switch the refrigerant cycle fails, if it fails, the resistance of the refrigeration system will be reduced. condenser does not get heat, and the air conditioner will be insufficient. The four-way valve string will also reduce the heating function.
Reason 5: Frost device failure
When refrigeration in winter, the heat control and heat absorption opportunity of the household central air conditioner will cause certain frost. Too much frost will affect the heat exchange of the machine and reduce the heating capacity of the system. Therefore, the system will start the frosting function regularly. Reduce the impact of frost on the system. If the frosting device fails, the system will not be able to frost during heating, which will lead to the system being unable to heat up or even shut down.
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