Indoor Unit Not cooling

[anil130]

Recently we have installed then20 HP City multi VRF system and among 8 indoor units 5 are working fine and on rest of the 3 units are not working means on 3 units, we are not getting cooling.i think expansion valve are not opening. so is there any setting to open the expansion valve of the indoor unit. waiting for your positive response.

[martinw58]

are you sure the units are wired and addressed correctly

[martinw58]

is the gas charge correct

[anil130]

is the gas charge correct

Gas charge and setting are all good and well and rest of the other 5 units are working fine.

[nike123]

How did you checked gas charge?
Do you hear clicking noise when energizing indoor units that are not opening valves?

[geminair]

The air filter might be clogged. because clogging air cannot flow through properly which greatly reduces the cooling capacity of the air conditioning (https://geminair.com.au/).

[chemi-cool]

Sound like a wiring problem to me.
Check the wires again to make sure it is correct.
3 units not working is not likely to a manufacture problem.