What is the chiller fault code? Learned how to solve in minutes

Q: What is the chiller fault code?

A: E1 means the extremely high indoor temperature alarm. E2 means the high temperature alarm. E3 means the extremely low temperature alarm. E4 means the failure of indoor temperature controller. E5 means the failure of water temperature sensor. E6 means the water flow alarm. The fault code for industrial chillers is different from manufacturer to manufacturer. According to the different chiller fault code, it is more convenient to find the fault problem and deal with the chiller fault immediately.

water chiller FL serise

In general, people will see two areas on the control panel of the equipment, respectively are the PV area expressing the specific temperature and the SV area setting the temperature. When a fault occurs, PV displays the number of the fault and SV displays the name of the fault.

For example, when the number of the fault displayed in PV area is 1 and the name of fault displayed in SV area is Err01. The reason is the fault of fault phase protection and three-phase power supply (suspected to be caused by fault phase or inverse phase or phase leakage).

When the number of the failure displayed in the PV area is successively expressed as 2,3 and 4, and the name of the failure displayed in the SV area is successively Err02, Err03 and Err04. It is due to the high pressure, over-pressure and load of no. 2 refrigeration compressor. The solution is to stop the no. 2 compressor.

When the number of the failure displayed in the PV area is successively expressed as 5,6 and 7, and the name of the failure displayed in the SV area is successively Err05, Err06 and Err07. It is due to the high pressure, over-pressure and load of no. 2 refrigeration compressor. The solution is to stop the no. 2 compressor.

When the number of the fault displayed in PV area is 8 and the name of fault displayed in SV area is Err08. The reason is that the refrigerated centrifugal pump is too low due to insufficient water flow.

When the number of the fault displayed in PV area is 9 and the name of fault displayed in SV area is Err09. The reason is that the refrigerated centrifugal pump load.

When the number of the fault displayed in PV area is 10 and the name of fault displayed in SV area is Err10. The reason is that the water flow of the cooling pump is not enough, which leads to the low cooling cycle water pressure (over temperature of the centrifugal fan). All refrigeration compressors and cooling pumps should be closed but refrigeration pump does not.

When the number of the fault displayed in PV area is 11 and the name of fault displayed in SV area is Err11. The reason is that the load of cooling pump is very large, which results in the load of refrigerating centrifugal pump (load of centrifugal fan). All refrigeration compressors and cooling pumps should be closed but refrigeration pump does not.

When the number of the fault displayed in PV area is 12 and the name of fault displayed in SV area is Err12. the reason is that the cold storage temperature id lower than the temperature set by SV. In some cases, there will continue to be other failure codes, which will not be analyzed today.

In the application of industrial chiller in the whole process, many problems will cause alarm. There are many kinds of alarm. They are generally light effect alarms, sound alarms and code alarms. The types of alarms are different due to the different manufacturing designs of the chiller factories. Whether light effect alarm or sound, code alarm, must cause the high attention of customers. The common problem of industrial chiller alarm is high pressure and low pressure alarm.

Among them, there are many reasons for the low pressure alarm, which are caused by the large amount of refrigerant charging or related problems. High pressure alarms are mostly caused by problems such as overheating and insufficient cooling. It also includes low refrigerating does or cooling water flow, refrigerant leakage or pipe obstruction and dirty residue leads to the problems of low total flow and slow water flow, eventually causing alarms and failures.

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