Gree Chiller Error Code List



Gree Water-Cooled Screw Chiller

Gree Chiller Error Code List
Gree Chiller Error Code List

Error Display: high pressure of compressor

Name: high pressure protection

Source of Error Signal: high pressure switch




Description: When the high temperature of system exceeds the setting value, the high pressure protection occurs and the corresponding malfunction LED lights while the compressor stops immediately. The malfunction information is shown on the wired controller. The unit can be started up only after the malfunction is removed manually.

Error Display: low pressure of compressor 

Name: low pressure protection

Source of Error Signal: low pressure switch

Description: When the low temperature of system is lower than the setting value, the low pressure protection occurs and the corresponding malfunction LED lights while the compressor stops immediately. The malfunction information is shown on the wired controller. The unit can be started up only after the malfunction is removed manually.

Error Display: overload of compressor 

Name: overload protection

Source of Error Signal: thermal relay

Description: Upon overcurrent of compressor, the overload protection will occur and the corresponding malfunction LED lights while the compressor stops immediately. The malfunction information is shown on the wired controller. The unit can be started up only after the malfunction is removed manually.

Error Display: chilled water switch 

Name: flow switch protection




Source of Error Signal: chilled water switch

Description: When the chilled water flowing through the unit is not sufficient, the flow switch protection will occur. The error LED of system 1 and system 2 (dual system) will light and all the compressors, chilled water pumps and cooling water pumps will stop immediately. The malfunction information is shown on the wired controller. It can be reset automatically.

Gree Chiller Error Code List
Gree Chiller Error Code List

Error Display: cooling water switch 

Name: chilled water switch

Source of Error Signal: chilled water flow switch

Description: When the cooling water flowing through the unit is not sufficient, the flow switch protection will occur. The error LED of system 1 and system 2 (dual system) will light and all the compressors, chilled water pumps and cooling water pumps will stop immediately. The malfunction information is shown on the wired controller. It can be reset automatically.

Error Display: anti-freezing heat detector 

Name: anti-freezing protection

Source of Error Signal: anti-freezing heat detector

Description: If the sensor is wrong, the error LED of system 1 and system 2 (dual system) will light and all the compressors will stop immediately. The malfunction information is shown on the wired controller. The unit can be started up only after the malfunction is removed manually.

Error Display: heat detector of intake chilled water 

Name: sensor malfunction protection

Source of Error Signal: heat detector of intake chilled water

Description: If the sensor is wrong, the error LED of system 1 and system 2 (dual system) will light and all the compressors will stop immediately. The malfunction information is shown on the wired controller. The unit can be started up only after the malfunction is removed manually.

Gree Chiller Error Code List

Error Display: heat detector of outflow chilled water



Name: sensor malfunction protection

Source of Error Signal: heat detector of outflow chilled water

Description: If the sensor is wrong, the error LED of system 1 and system 2 (dual system) will light and all the compressors will stop immediately. The malfunction information is shown on the wired controller. The unit can be started up only after the malfunction is removed manually.

Error Display: heat detector of intake cooling water 

Name: sensor malfunction protection

Source of Error Signal: heat detector of intake cooling water

Description: If the sensor is wrong, the error LED of system 1 and system 2 (dual system) will light and all the compressors will stop immediately. The malfunction information is shown on the wired controller. The unit can be started up only after the malfunction is removed manually.

Error Display: heat detector of outflow cooling water 

Name: sensor malfunction protection

Source of Error Signal: heat detector of outflow cooling water

Description: If the sensor is wrong, the error LED of system 1 and system 2 (dual system) will light and all the compressors will stop immediately. The malfunction information is shown on the wired controller. The unit can be started up only after the malfunction is removed manually.

Error Display: superheat

Name: superheat protection

Source of Error Signal: heat detector of outflow cooling water

Description: When the outflow cooling water temperature is higher than the  setting value, the superheat protection will occur. The error LED of system 1 and system 2 (dual system) will light and all the compressors will stop immediately. The malfunction information is shown on the wired controller. In that case, only when the outflow cooling water temperature is lower than the setting value, the malfunction can be removed by manual resetting.

Error Display: anti-freeze

Name: anti-freezing protection

Source of Error Signal: anti-freezing heat detector

Description: When the anti-freezing heat detector detects that temperature is lower than the setting value, the error LED of system 1 and system 2 (dual system) will light and all the compressors will stop immediately. The malfunction information is shown on the wired controller. In that case, only when the temperature is higher than the setting value, the malfunction can be removed by manual resetting.

Error Display: discharge high temperature

Name: discharge high temperature protection

Source of Error Signal: heat detector of discharge high temperature

Description: When the discharge temperature is higher than the setting value, the error LED of corresponding system will light and the corresponding compressors will stop immediately. The malfunction information is shown on the wired controller. In that case, only when the discharge temperature is lower than the setting value, the malfunction can be removed by manual

Error Display: phase sequence of power supply

Name: Phase sequence protection



Source of Error Signal: Lack phase protector

Description: When the phase sequence of the power supply is wrong or the power supply is lack of phase, the lack phase protection will occur and the error LED of system 1 and system 2 will light and all the compressors will stop immediately. The malfunction information is shown on the wired controller. The unit can be started up only after the malfunction is removed manually.

Error Display: low flow of cooling water 

Name: low flow protection of cooling water

Source of Error Signal: heat detector of inflow and outflow temperature for cooling water

Description: When the controller detects for successive 10min that the differential temperature between inflow and outflow cooling water is higher than the setting value, the error LED will light. The wired controller will display the information of insufficient cooling water flow, but the unit will not stop. The error can be removed automatically.

Error Display: low flow of chilled water

Name: low flow protection of chilled water

Source of Error Signal: heat detector of inflow and outflow temperature for chilled water

Description: When the controller detects for successive 10min that the differential temperature between inflow and outflow chilled water is higher than the setting value, c, but the unit will not stop. The error can be removed automatically

Error Display: high pressure sensor

Name: sensor malfunction protection

Source of Error Signal: high pressure sensor

Description: If the sensor is wrong, the error LED of system 1 and system 2 (dual system) will light and all the compressors will stop immediately. The malfunction information is shown on the wired controller. The unit can be started up only after the malfunction is removed manually.

Error Display: low pressure sensor

Name: sensor malfunction protection

Source of Error Signal: low pressure sensor

Description: If the sensor is wrong, the error LED of system 1 and system 2 (dual system) will light and all the compressors will stop immediately. The malfunction information is shown on the wired controller. The unit can be started up only after the malfunction is removed manually.

Error Display: discharge temperature sensor

Name: sensor malfunction protection

Source of Error Signal: discharge temperature sensor

Description: If the sensor is wrong, the error LED of system 1 and system 2 (dual system) will light and all the compressors will stop immediately. The malfunction information is shown on the wired controller. The unit can be started up only after the malfunction is removed manually.

Error Display: inspiratory temperature sensor 

Name: sensor malfunction protection

Source of Error Signal: inspiratory temperature sensor

Description: If the sensor is wrong, the error LED of system 1 and system 2 (dual system) will light and all the compressors will stop immediately. The malfunction information is shown on the wired controller. The unit can be started up only after the malfunction is removed manually.

Error Display: oil switch

Name: oil switch protection

Source of Error Signal: oil switch

Description: When the oil level of the compressor is too low, the oil level switch protection will occur. The corresponding error LED will light and the corresponding compressor will stop. The malfunction information is shown on the wired controller. The unit can be started up only after the malfunction is removed manually.




Error Display: differential pressure protection 

Name: differential pressure protection

Source of Error Signal: high pressure and low pressure sensor

Description: When it is detected that the differential pressure of the compressor is too low, the differential pressure protection will occur and the compressor will stop. The unit can be started up only after the malfunction is removed manually.

Error Display: heat detector of condenser outlet

Name: sensor malfunction protection

Source of Error Signal: heat detector of condenser outlet

Description: If the sensor is wrong, the error LED of system 1 and system 2 (dual system) will light and all the compressors will stop immediately. The malfunction information is shown on the wired controller. The unit can be started up only after the malfunction is removed manually.

Gree Water-Cooled Screw Chiller Manual PDF

Gree Air Conditioners Error Codes




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