My freezer is apparently slowly leaking refrigerant. I sent it in for repairs a few years back, but now it is failing with the exactly the same symptoms: compressor working non-stop, temperature never goes to -18C (it has a digital display), but stays around -11C. It has developed this condition very gradually.
My freezer has two screw-on connections (I think they were added during the repairs): one on the stump pipe going out of the compressor (bottom), and the other on the little stump going out of filter-drier (top):
My plan is to buy an auto air conditioner refill kit (gas can + gauge + tubes), and just add some gas. My freezer uses just 120g (4.2oz) of R-134A, so I know the gas is compatible, but I need to add just a little bit.
- Which connection to use? The top one or the bottom one?
- How can I know I added enough?
I know this is not really a fix without fixing the leak, if it helps for just a few months, I'm good with that.