I have 10 years old LG 12 a/c split system, and since last year it does
not cool as it used to. It is used only during summer, not for heating.
I have r22 manifold, so van anyone explain how to top-up with r22? I do
not have vacuum pump, and I can not evacuate the gas and put 780 grams
of r22 (as it is written on the label).
Where I am it is hard to find good a/c tech, and few I asked answered
that they only top-up by pressure, not as I described above.
I have r22 P/T chart, and it is also clearly marked on the manifold
dial. But I guess that it is not the same if I top up at 25 Celsius or
35 Celsius (75F or 95F), or while outdoor unit is exposed to the sun or
in the shade. How do you compensate for this differences?
I measured temp by inserting temp sensor an inch in the indoor unit, and
it shows 7.5 Celsius (44.6F), while my other aircon shows 5.5C (41.0F).
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