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Do you have a meter for checking voltage and capacitance? One possible cause is a bad capacitor for compressor. If it is swollen it is bad, if not we would need a capacitance meter to check it.
Can do check capacitor to see if it is swollen as shown in pic I sent?
It will be in the service compartment of the outdoor unit near the contactors.
Ok from here will we need a meter since we can not see power.If you want to get an inexpensive one at Lowes or Walmart I can guide you. Yes it can be bad although not swollen. THat would require a meter that reads microfarads (uF)
Best thing to do is leave question open ,obtain the meter and then we will go step by step.We can continue working here until we are done .
First step is to set meter to uF setting and remove power,then wires from capacitor and verify it is within 3% of rating marked on side.
If capacitor is good we will start checking volatge at various places (Contactor,Compressor, etc.)Make sure to get a meter capable of reading both capacitance and voltage.
AS for cap if it is bad or weak, you can get at any appliance parts or hvac supplier.
It is pretty common for the cap to go bad, but I hae condemning parts without troubleshooting to verify. Home Depot or Lowes will not have but a local applaince parts store wherethey sell ac, washer dryer and stove parts will ahve
Sounds good, WE will go from here.
Remember we want to read both capacitance and voltage AC
Capacitor will probably run about 30 bucks
Ok what is model on meter? Do you know how to check capaciotr?
I don't see a uF (Capacitance ) setting on the DM-350A.