Excessive refrigerant, frosting or dripping of oil return pipe, overheating of radiator, overheating of filter and frosting of evaporator. Whether the refrigerator is cooled may be due to the following reasons: 1. It may be that there are too many things in the refrigerator, which causes the illusion that the refrigerator does not cool. 2. It may be that the cleanliness of R600a system did not reach-133Pa due to the incorrect fluorine adding method, which led to poor refrigeration effect.

Suggested solution:

1, try to slim down the refrigerator, maybe it will work normally, usually because you don't know how to use it.

2, with pliers stuck dry filter, start the compressor, stop running after 5 minutes, vibration compressor to.

Drain some refrigerants compatible with the refrigerating machine oil, pause for 3 minutes, and then turn on the power supply to start the compressor to minimize the refrigerant content in the refrigeration system. Disconnect the power supply, seal the exhaust hole of the dry-blown compressor, clamp the special dislocation at the low-pressure pipe of the compressor, and vacuum the exhaust pipe outdoors with a special vacuum system for no less than 10 minute. Then remove the compressor with a heavy cutter, dry blow the compressor, blow the pipeline with helium for more than 5 seconds, and replace the interface of the corresponding parts. Pump nitrogen for leak detection, pump nitrogen after inspection and judgment, and vacuum for more than 20 minutes. Because the filling amount of 100 diagnostic reagent is very small, it is necessary to use high-precision refrigerant filling equipment, such as electronic scales, to weigh the injected refrigerant, or to judge whether the amount of refrigerant is appropriate according to the suction pressure. Maintain joint seal with special seal. Then check for leaks with soapy water.