UK Appliance Repair Questions? Ask a Technician for Answers ASAP
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Can you hear a fan running in the freezer section? Can you see any frost on the back wall inside the freezer?
I am going to have another look at that model. Please allow me just a few minutes to prepare some information for you, thank you!
I apologize, that model is indeed not showing an evaporator fan. If the compressor is running all the time and the cooling is poor, you likely have a coolant leak that will need to be professionally repaired. Unfortunately, that repair will be expensive but certainly less than replacing it.
Typically, leaks develop at the unions where the copper tubing meets the aluminum where epoxy is used to seal the connection. It is not uncommon for the steel to copper solder joints at the compressor to develop leaks, either. It may be that the compressor is getting inefficient, too. However, the only way to know would be to solder on access valves and measure the pressures.
If the compressor has become inefficient as I mentioned above, the expense will be great, close to the cost of a new unit. If it is just a leak, depending on the leak area, it may not be too expensive. However, if the leak is at the evaporator joints, the entire evaporator would need to be replaced. Used parts are not used in sealed system repairs, so if any parts are required, it will not be an inexpensive repair. The only way to tell what is happening, though, is to get valves on it and see what the sealed system pressures are.
Yes, as stated above, anything other than a simple leak will be quite expensive, near the cost of a new unit. So, I would probably replace the refrigerator.
Both of the LG models are of good quality and with excellent reviews, so it would come down to your personal preferences. As for fixing the old one, it will cost the service call, some labor to solder valves on and the cost of supplies to get access (the valve(s), solder, etc) to determine what has happened. It will likely cost around £100-110 to get a diagnosis.