What is the reason for the Wuling Hongguang mini air conditioner not cooling?
1 Answers
The reason why the Wuling Hongguang mini air conditioner is not cooling is due to a lack of refrigerant. The steps to add refrigerant are as follows: 1. Prepare the tools: Before adding car air conditioner refrigerant, prepare a vacuum pump, manifold gauge, refrigerant, electronic scale, etc. 2. Connect the filling port: First, use the manifold gauge to connect the vacuum pump and the filling port on the air conditioning pipeline to evacuate the system. Observe the scale on the manifold gauge. After the vacuum reaches the bottom, continue evacuating for more than half an hour (mainly to remove moisture from the air conditioning system). Tighten the manifold gauge hand valve, turn off the vacuum pump, and hold the pressure for about 10 minutes. 3. Observe the scale on the manifold gauge: If the system vacuum does not rebound, disconnect the manifold gauge tube from the vacuum pump, connect one end to the low-pressure pipe filling port, and the other end to the refrigerant cylinder. Before opening the manifold valve, first open the refrigerant cylinder, loosen the pipe joint, use the refrigerant to flush out the air in the pipe, and then tighten it. 4. Add refrigerant: If the specific filling amount is not known, loosen the manifold gauge hand valve with the air conditioner off and add as much refrigerant as possible. Then start the engine, turn on the air conditioner, and slowly increase the engine speed to 1200~1500 rpm. At this time, pay attention to the sight glass on the liquid storage dryer. Bubbles will initially roll, then gradually decrease. When the bubbles just disappear, close the manifold gauge hand valve. 6. Close the refrigerant cylinder: Disconnect the manifold gauge tube from the air conditioning low-pressure pipe, and the car air conditioner refrigerant filling is complete.
