GMV DC Inverter VRF 
50 
3.10 Check Items after Installation 
Has the unit been fixed firmly? 
The unit may drop, shake or emit noise. 
Have you done the gas leakage test? 
It may cause insufficient cooling/heating 
capacity. 
 
Dose the unit get proper thermal insulation? 
It may cause condensation and dripping.   
Does the unit drain well? 
It may cause condensation and dripping.   
Is the voltage in accordance with the rated voltage 
specified on the nameplate?   
It may cause malfunction or damage the part. 
 
Is the electric wiring and pipe connection installed 
correctly and securely? 
It may cause malfunction or damage the part. 
 
Has the unit been earthed securely? 
It may cause electrical leakage. 
Is the power cord specified?   
It may cause malfunction or damage the part. 
Has the inlet and outlet been blocked? 
It may cause insufficient cooling/heating 
capacity. 
 
Has the pipe length and refrigerant charging 
amount been recorded? 
The refrigerant charging amount is not 
accurate. 
 
Is the address code of outdoor modules correct? 
The unit cannot run normally. Communication 
malfunction might happen. 
 
Is the address code of indoor units and wired 
controller correct? 
The unit cannot run normally. Communication 
malfunction might happen. 
 
Has the communication line been connected 
correctly? 
The unit cannot run normally. Communication 
malfunction might happen. 
 
Is the pipe connection and valve status right?  The unit cannot run normally. 
 
Whether phase sequence of external power cord 
is correct or not? 
Operation fault occurs or unit is damaged. 
 
The above inspection items after installation are the inspection for some key components. Please 
conduct the check according to actual needs.