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mcquay als 312.3 chiller

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hi friends ive got a problem with this screw chiller.its r134a and 3 circuits each circuit has 136 kg of refrigerant. The chiller goes in alarm in circuit 1 on transitional fault after the soft start drops out. Circuit 2 had fault on soft start board it was displaying f23 were you get amps reading.once reset it run for 3 minutes and then the compressor stops. But the carel interface is still showing its running and loading up. On circuit 3 ive got the alarm for condenser and evaporater pump service and it runs for about 30 seconds and goes out on fault.any help or info will be grateful.thankyou guys

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