GREE                                                                        GMV5E DC INVERTER VRF UNITS SERVICE MANUAL 
    123   
Protection for other modules 
Current sensor of compressor 6 is 
abnormal 
Over-current protection of compressor 1 
Over-current protection of compressor 2 
Malfunction of casing top temperature 
sensor of compressor 1 
Over-current protection of compressor 3 
Malfunction of casing top temperature 
sensor of compressor 2 
Over-current protection of compressor 4 
Malfunction of exit tube temperature 
sensor of mode exchanger     
Over-current protection of compressor 5 
Malfunction of inlet tube temperature 
sensor of mode exchanger   
Over-current protection for compressor 6 
Malfunction of outdoor ambient 
temperature sensor 
Gas-mixing protection of 4-way valve 
Malfunction of defrosting temperature 
sensor 1 
High pressure ratio protection of system 
Malfunction of defrosting temperature 
sensor 2 
Low pressure ratio protection of system 
Malfunction of liquid temperature sensor 
of sub-cooler 
Protection because of abnormal pressure 
Malfunction of gas temperature sensor 
of sub-cooler 
Water flow switch protection 
Malfunction of inlet tube temperature 
sensor of vapor liquid separator 
Protection because high pressure is too 
low   
Malfunction of exit tube temperature 
sensor of vapor liquid separator   
Oil-return pipe is blocked   
Malfunction of outdoor humidity sensor 
Oil-return pipe is leaking   
Malfunction of gas temperature sensor 
of heat exchanger 
malfunction of driving board of compressor   
Malfunction of oil-return temperature 
sensor 1 
Driving board of compressor operates 
abnormally   
Clock of system is abnormal 
Voltage protection of driving board power 
of compressor   
Malfunction of inlet tube temperature 
sensor of condenser 
Reset protection of driving module of 
compressor 
Malfunction of outlet tube temperature 
sensor of condenser 
Drive PFC protection of compressor 
High-pressure sensor and low-pressure 
sensor are connected reversely 
Over-current protection of inverter 
compressor 
Malfunction of temperature sensor of 
oil-return 2 
Drive IPM module protection of 
compressor 
Malfunction of temperature sensor of oil 
return 3 
Malfunction of drive temperature sensor of 
compressor 
Malfunction of temperature sensor of oil 
return 4 
Drive IPM high temperature protection of 
compressor 
Malfunction of driving board of fan   
Desynchronizing protection of inverter 
compressor 
Driving board of fan operates abnormally   
Malfunction of drive storage chip of 
compressor 
Voltage protection of driving board 
power of fan   
High-voltage protection of compressor’s 
drive DC bus bar 
Reset protection of driving module of fan 
Malfunction of current detection circuit 
drive of compressor   
Drive PFC protection of fan 
Low voltage protection for DC bus bar of 
drive of compressor   
Over-current protection of inverter fan 
Phase-lacking of inverter compressor   
Drive IPM module protection of fan 
Malfunction of charging loop of driven of 
Malfunction of drive temperature sensor