Fault in York Ec 500

[beida]

Hi brother
I have one chiller Ec 500 York ( york millenuium chiller ).
The fault is low curre/mp/hp
In the system no:1
And others system working no problem
NB : I hear some noise in the first contactor for (star delta)
I hope I can find some help like evry time I share my proplem with you
Sorry for my bad English

[al]

Check the contactors are getting voltage, check the auxillary contacts on the first (main) contactor

[beida]

Thanks bro to help
After checking I will tell you the results