The psi on your unit will fluctuate ...dirty filter will cause it to be lower'' high humidity will cause it to be higher,,, the perfect scenario is 95 outside, 75 inside with 50 percent humidity,,, then it should read 68 psi which is a 40 degree coil temp. only when these conditions are perfect will your psi be 68psi
SOURCE: No pressure on suction side of condenser
hi there,
there are several factor we can consider of that status of the pressure of your ac.,if this run at normal operation w/sufficient
cooling effect,and standard operating pressure,then suddenly it drops to that pressure you said,there is leaks,before you recharge,you should find the leak,locate where tube and repair,testing leakage on tube is not easy job,it uses nitrogen gas
w/ 1000 psig to charge your system and halide leak tester has been used to find exactly where that leaks was in all your system.soap bubble test is a basic test but also helpul.this should be done by certified a/c technician.
beside one factor also is lost compression of the compressor,what ever you recharge,it will not work because of worn out of compression ring at piston,this case is seldom but if the service of your compressor is longer to warranty this may happen,or dried out of lubricant inside compressor.
better call on your service center to check on this,regards dont forget to ratew me thanks a lot.
SOURCE: supply air is 74 degrees???????? low side
Because you have a ductwork problem. Look for leaks in the supply lines or a dirty coil not allowing sufficient airflow.
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