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What is the model on the ac unit?
Is his a central ac unit?Not seeing this as a good model. Is there a diagram on the unit?
1. Is that number off of the outdoor unit?
Can you attach a pic of that diagram?
Usually we will have 3 terminals on capacitor.
Fan, COM and HERM
Compressor has 3 wires. One to T1 on contactor, one to T2 on contactor and the other to HERM on Capacitor
Fan has 3 wires. One to T1 on contactor , one to T2 on contactor and one to FAN on capacitor
Then there is a wire from T2 on contactor to COM on capacitor.
Often the wire from compressor or fan will go to the COM on capacitor instead of directly to T2 as COM is fed from T2 on capacitor.
Give ,me a minute to look at those images
Let me draw this for you
OK so fan you have figured out yes?
OK I am drawing the diagram for the large compressor cap
OK here is what you will do.
1.You have 2 power wires coming into the unit.One will go to L1 and the other will go to L2 on the contactor
2.You will have a wire coming off of T1 on contactor going directly to C on compressor
3.You will have a wire coming from T2 on contactor and going to R on compressor and one side of the compressor capacitor
4. You will have a wire from other side of compressor capacitor going to S on compressor.
See the drawing I made
NO makes no difference on a single cap
Sounds like a bad compressor. Do you have a multimeter for troubleshooting?
Excellent. Turn power off. remove wires from compressor terminals. Set meter to read continuity. Put one lead on a known ground such as clean refrigerant copper line or a ground screw. Then touch other meter lead to each terminal on compressor and see if we get a reading from any terminal to ground.
OK that is GOOD. We don't want any reading there. Next put one lead on each of the terminals . (R to C, C tor S and S to R)See if we get a continuity reading there between terminals
OK we should get a reading between each of those.It will not be very many ohms.Are you saying we have ohms but below 20?
Watch this video starting at about 2:35
Then watch this one on ohming to ground .Let me know results of both of those tests
OK that is fine. But please verify for me you did get some reading between each and every compressor terminal but nothing from any terminal to ground?
Excellent and we should. This means either the compressor is mechanically seized or the capacitor is bad.Does your meter read microfarads? If not you can take the cap to a supply house to have it checked.
Leaving office for the evening.Nowhere to get cap tested or replaced tonight anyway so I will check in with you tomorrow morning.