McQuay oil return problems with flooded evaporator

[hladotech]

Hi, Guys!
I have a problem with McQuay PFS C Italy chiller.
At one of double refrigerant circuits oil level in separator is under lower glass and oil not seen. In the oil return sight glass is bubble-oil mixture running back to the compressor.
Since the commissioning unit oil always migrate from the first circuit separator to the second. Unit does not have any protection from low oil level or oil absence in the separator. Daikin-McQuay says that is there no point to worry about. But I think it is stupid because there is no oil protection. So I do not know what to do.
If anybody has experience using this chiller please give advice.


Thank!

[sachinp747]

hi i have mcquay chiller MNG105.2 HA ST model im facing problem for both Circuit A & B, Circuit A showing Alarm AL:E01 Exp A not recognized & Circuit B is Low Ambient tepm start up failure & with AL:206 Low Pressure Alarm #2 what the reason and how to remove this alarm