How to turn on the refrigerant of the air conditioner: hot topics and operation guides on the Internet
As the high temperature in summer continues, the frequency of air conditioner use increases sharply, and the discussion about air conditioner refrigerant (refrigerant) has become one of the hot topics on the Internet in the past 10 days. The following is a practical guide compiled based on popular topics to help users correctly operate air conditioner refrigerant-related functions.
1. Hot topics related to air conditioners on the Internet in the past 10 days
| Ranking | Topic keywords | Search volume (10,000) | Main discussion points |
|---|---|---|---|
| 1 | Air conditioner not cooling | 245.6 | Insufficient refrigerant and clean filter |
| 2 | How to add refrigerant | 187.3 | DIY operation risks |
| 3 | Air conditioner power saving tips | 156.8 | Temperature setting, refrigerant efficiency |
| 4 | Refrigerant model selection | 92.4 | R22 vs R32 |
| 5 | Air conditioning odor treatment | 85.7 | Refrigerant leakage correlation |
2. Basic knowledge of air conditioning refrigerants
Refrigerant is the core medium of the air-conditioning refrigeration cycle, which transfers heat through gas-liquid phase change. Current mainstream models include:
| Model | Environmental protection | Pressure characteristics | Applicable models |
|---|---|---|---|
| R22 | Contains chlorine (phased out) | low pressure | Old fixed frequency |
| R410A | Chlorine-free | high pressure | New frequency conversion |
| R32 | low carbon | Flammable requires professional | Latest model |
3. The correct operating steps for turning on the refrigerant of the air conditioner
1.Safety preparation: Turn off the power, wear protective gloves and goggles, and ensure the working environment is ventilated.
2.Positioning service valve: Find the valve interface marked "HIGH/LOW" on the outdoor unit of the air conditioner (usually covered with a dust cap).
3.Connect pressure gauge: Connect the blue hose to the low-pressure valve (LOW), the red hose to the high-pressure valve (HIGH), and the yellow hose to the refrigerant tank.
| Operation link | normal value range | abnormal behavior |
|---|---|---|
| low pressure | 4-6bar (R22) | Below 3bar, additional injection is required |
| high pressure | 15-20bar | Exceeding 25bar is dangerous |
| Air outlet temperature difference | 8-12℃ | Small temperature difference needs to be checked |
4.Replenish refrigerant: Turn on the air conditioning refrigeration mode, slowly open the refrigerant tank valve, and observe the pressure gauge change to the normal range.
5.finishing touches: First close the refrigerant tank, then disconnect the pressure gauge, and finally restore the dust cap.
4. Important matters needing attention
•Not recommended for non-professionals: New refrigerants such as R32 are flammable and may cause explosions if handled improperly.
•Leak detection: Use soapy water to smear the interface to check for air bubbles. If leakage is found, stop using it immediately.
•Environmental regulations: According to the Montreal Protocol, it is illegal to discharge snow at will.
A recent hot search case shows that a user caused a fire by adding R32 refrigerant on his own, and the repair cost was as high as 20,000 yuan. It is recommended to contact the manufacturer’s after-sales service first (most brands provide free testing services). The regular refill fee is usually between 200-500 yuan.
With reasonable maintenance, air conditioning refrigerant generally does not need to be added for 3-5 years. Pay attention to cleaning the filter on a daily basis (once every 2 weeks) and avoid frequent switching on and off, which can significantly extend the life of the refrigeration system.
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