GMV DC Inverter VRF 
60 
Meaning 
Progress 
LED1  LED2  LED3 
Code 
Display 
Code 
Display 
Code 
06_outdoor unit's 
parts inspection   
db  ON  06  ON  OC  ON 
The system detected that 
there's no fault for outdoor 
unit's parts. Then it will 
automatically enter into 
If an abnormality is detected, it will stay in the current state and manual troubleshooting is 
required. The corresponding faults are as below: 
Meaning 
Progress   
Code 
Display 
Code 
Display 
Code 
Display 
06_outdoor unit's 
parts inspection 
db  ON  06  ON 
Corresponding 
error code 
ON 
The system detected that 
there's fault for outdoor 
Refer to the part of “Troubleshooting” for the corresponding troubleshooting method.   
Step 10: The unit debugging step 07 is “indoor unit's parts inspection”. 
If there is no abnormality in the detection, the display is as below, and then it automatically enters 
the next step of detection. 
Meaning 
Progress 
Code 
Display 
Code 
Display 
Code 
Display 
07_indoor unit's 
parts inspection 
db  ON  07  ON  OC  ON 
The system detected 
that there's no fault for 
indoor unit's parts. Then 
it will automatically enter 
If an abnormality is detected, it will stay in the current state and manual troubleshooting is 
required. The corresponding faults are as below: 
——  Debugging code  Progress code  Status code   
Meaning 
Progress 
Code   
Display 
Code 
Display 
Display 
07_
inspection 
db  ON  07  ON 
XXXX/ 
correspodin
ON 
The system detected that 
there's fault for indoor 
XXXX indicates the engineering no. of fault indoor unit. 3s later, the corresponding error code will 
be displayed. For example, if d5 fault occurs for No.100 indoor unit, LED3 displays as below:  01 (2s 
later) 00(2s later) d5, and they will display like that circularly.   
Refer to the part of “Troubleshooting” for the corresponding troubleshooting method.   
Step 11: The debugging step 08 is “compressor preheat confirmation”.   
If the preheat time has reached for 2h, the display is as below. Then it will enter into the next step 
for inspection.