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martinw58
07-05-2015, 08:24 PM
have a trane chiller with 2 compressors one compressor keeps tripping on phase imbalance other one working ok have checked run amps both comps drawing 37 41and 41 amps volts 220 225 and 225 any idears

frank
07-05-2015, 10:05 PM
Swap the CT's and see if the fault moves across to the other compressor

martinw58
08-05-2015, 08:39 PM
have tried that and still same comp tripping strange only one tripping as they both pull the same amps

hookster
08-05-2015, 08:59 PM
Hi Martin58
Your voltage readings are exceeding the +_5% tolerance
Have you checked all your terminal connections and contacts for wear? Swap over the starter modules and see if comp trip moves over.

Then replace starter modules and check your supply voltage and supply cabling and switch circuit connection.

Martin Davies
09-05-2015, 11:04 AM
What does it trip exactly? Breaker in DB?

martinw58
10-05-2015, 08:34 PM
the manual states 15% tolerance. the unit brings fault up on controls not trip of breakers