There is a leak somewhere.
The problem is finding the leak.
Having found the leak, you fix it.
It might happen that you lose all of the refrigerant while performing the
If that happens, you need a new drier in addition to the other parts.
Finally, you are ready for a recharge.
Of course, you could just recharge it again and again and again. You will
get tired of buying more refrigerant though.
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