in cars if you are manually doing that ON-OFF to the compressor than you are surely damaging the unit.
the machine itself diagnoses when the pre-set temp has reached it will cut off the compressor and will restart it on its own sensing the increase in cabin temperature.
same goes for the home ACs etc.
as soon as the pre-set temp is reahced compressor get cut-off. and gets restarted when any increase in temperature is noticed.
and that 3 minutes delay-start is used to protect the compressor from the fluctuations in electricity. say if the electricity is continuously fluctuating then that 3 minute delay will give you enough time to switch your unit OFF.
moreover, say, if units gets started and just after it got started, electricity goes OFF or fluctuates highly, then the unit may get damaged.
so that 3 min delay is used as precautionary measure to let the electricity supply stabilize! |