Now running at about 0.2 in the low pressure of around 1.1, before the normal operation is two of the pressure, then the compressor internal spindle is broken, back to the factory from the new replacement back after installing the add refrigerant into it, and the refrigeration temperature does not drop down, before the refrigeration temperature is 10 degrees below zero, now can drop to 3 degrees below zero.
Cold storage compressor defrosting may have the following reasons:1, cold storage, cold air machine, frost block, row pipe library is not defrost for a long time.2, expansion valve is not adjusted, open too large.3, too much refrigerant charge4, according to your description of the situation, you adjust the expansion valve, slowly close the small, 4 times a circle adjustment try
Throttle valve is not good or damaged refrigerant, water will also be excessive
Vacuum? Ice is due to lack of fluids, or it may be blocked.
The obvious compressor can be replaced. The cylinder is not cooled, is it?
