The City Multi heat pump system has correct operation.
All heat pump systems with multiple indoor units have standard heating mode oil return
The co2 system is not an option for my costumer. The refrigerated container will be used in desert environment, and only be used in special cases. IRyanCSI 05-03-2015, 10:20 AM
R134a Standard on Carrier 69NT40.
The problem is related to a non-working unit who are exposed to high ambient temperatures. The problem occurs