Compressor high, low, low pressure, normal refrigeration, why?
The description of the problem is vague and the description is not specificIt is recommended to check the heat dissipation of the condenser, the heat absorption of the evaporator and the normal exhaust of the compressor;Check expansion valveCheck the coolant leaks.
1, observe the work inside and outside the machine: if the light display board, inside the machine is working, the output speed is normal, the fans, the compressor is running, in order to determine the problem or lead to electrical system problems without refrigeration.2. Check the air conditioner data:A, air conditioning, water flow, general internal drip water, continuous air conditioning is normal, but affected by environmental humidity and temperature, can only be used as a reference value.B, inlet and outlet temperature difference, the normal temperature difference between inlet and outlet should be 12-14 degrees, but it will also be affected by environment temperature and wind speed.The C measurement system, pipeline pressure, general refrigeration heating in low pressure 0.45Mpa-0.50Mpa, high pressure between 1.8Mpa-2.2Mpa, but the pressure to be affected by the ambient temperature, inlet air temperature is high, the exhaust pressure is high, the condensing temperature is higher, and vice versa; the greater the air conditioning load, the higher the suction pressure. The evaporation temperature (normal evaporation evaporator temperature between 5-7 degrees).
What compressor makes clear? Check that the evaporator is dirty and the water circulation is OK. Is it normal? Any refrigerant missing? These may not be refrigeration. Don't you understand the compressor? The hand is blocked to repair the hernia!
