1, the refrigerator door is not closed tightly, adjust pitch hinges and locks on doors and storage body between. 2, refrigerator without refrigeration or cooling effect is poor, dirty refrigerator condenser Check whether frost on evaporator Check the library is too thick, check the refrigerant leaks (with soap and water applied to the pipe connections, there are bubble build instructions for refrigerant leakage). And ask the professionals and add refrigerant leaks processing, check the refrigerator door seal is intact and to exclude it, to check whether the refrigerator cold storage in the parameter settings work correctly, check the refrigerator computer controller and readjust Check whether the cold storage controller failure and replace it, check the library stacked items sufficient clearance and dredge it. 3, frequent or prolonged chiller start long boot does not start or stop or not to stop the thermostat. A, if there is dirt on the check condenser, heat will lead to poor Condenser pressure is too high, in order to protect the compressor, under pressure controller machine stops running, wait until after the heat well, by clicking on the pressure controller black reset button, the machine can automatically resume operation. B, controller parameters set incorrectly, reset can. C, refrigeration is not good, please refer fault 2. D, temperature control failure. E, electrical damage. 4, after closing the cold storage distribution box does not respond, and the three-phase power is normal. Please check the zero line, whether there is 220V voltage. Refrigerator parts (various valves, controllers) have been set up, there is no need to adjust the user's part. 5, bank lamp does not light, check whether the failure of the switch, the bulb is damaged. To cut off the power to check, pay attention when installing waterproof lamp shade. 6, when the ambient temperature is too high, the refrigerator running for some time, storage temperature not yet reached the set value and refrigerator in advance downtime. This is due to ambient temperature increases caused Condenser pressure is too high, in order to protect the compressor, under pressure controller's machine is stopped, until well after the heat, press the reset button on the pressure controller black machine that is automatically resume operation. And check whether water condenser cooling is good. Setting can not be adjusted to the pressure controller, pressure controller or no protection refrigerator effect. 7. Check the power: no power on the distribution box or display does not show. Please check whether the refrigerator dedicated brake failure. If the refrigerator starts frequent or long boot time does not start or does not stop or not to stop cold temperature. A, if there is dirt on the check condenser, heat is not good because the refrigerator can cause condensation pressure is too high, in order to protect the compressor, under pressure controller's machine is stopped, until well after cooling, the pressure controller click black reset button, the machine can automatically resume operation. B, controller parameters set incorrectly, reset can. C, if refrigeration is not good, please refer fault 2. 8, there is abnormal noise when the machine is running, please stop to check whether it is due to vibration or mechanical failure. Distribution box has an unusual noise, which is emitted by the sound exchanges and contacts, is due to exposure to the movement of the parts locally is not flexible, then back off please press the contactor iron absorption to eliminate noise. When the ambient temperature is too high, the refrigerator running for some time, storage temperature not yet reached the set value and refrigerator in advance downtime. This is due to ambient temperature increases caused Condenser pressure is too high, in order to protect the compressor, under pressure controller's machine is stopped, until well after the heat, press the reset button on the pressure controller black machine that is automatically resume operation. And check whether water condenser cooling is good. Setting can not be adjusted to the pressure controller, pressure controller or no protection refrigerator effect. These are the people Ran refrigeration technicians summed up a few cold there is a problem detected, read the whole article text articles Did you know a lot of cold knowledge of it, people ran refrigeration professional installation of large and small cold storage, cold storage to undertake maintenance, construction installation cold storage, moving a series demolition services. Tel 021-54855575 people ran cold storage refrigeration