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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.
are you sure the units are wired and addressed correctly
is the gas charge correct
Gas charge and setting are all good and well and rest of the other 5 units are working fine.Quote:
Originally Posted by martinw58
How did you checked gas charge?
Do you hear clicking noise when energizing indoor units that are not opening valves?
The air filter might be clogged. because clogging air cannot flow through properly which greatly reduces the cooling capacity of the air conditioning.
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.