Tech was informed on system is short cycling once tech arrived tech found system cutting within secs on high pressure tech inspected and tested system and sensors and transducer. All sensors and transducers are within dc voltage and ohm resistance specs. Tech spoke with Trane tech support and went thro the steps and determined system was over charged tech removed 4lbs of 410a to achieve desired pressures on heat mode tech cycled cooling mode and system is operating properly at this time