Cutting a 6x6 hole through the metal backing and insulation to repair a leak in the tubing seems like an unusual approach for refrigerator repair. Typically, when repairing a refrigeration system leak, technicians would follow industry-standard procedures.
Repairing a refrigerant leak usually involves identifying the location of the leak, patching it, or replacing the damaged component, such as the tubing or valve. In some cases, technicians might access the refrigerant lines through the back or sides of the refrigerator, but this is generally done with precision and care to minimize any impact on the refrigerator's structural integrity and insulation.
Cutting a large hole through the metal backing and insulation raises concerns about potential long-term impacts on the refrigerator's performance, efficiency, and safety. It may compromise the refrigerator's insulation, leading to energy inefficiency and potentially affecting its cooling capabilities. Additionally, cutting through the metal backing might introduce sharp edges or weaken the structural integrity of the appliance.
If the manufacturer is proposing this repair, it would be prudent to seek a second opinion from a reputable and qualified appliance repair specialist. You could also contact the manufacturer directly to inquire about the reasoning behind this specific repair approach and whether there are alternative methods that could be used.
Ultimately, before proceeding with any repair, make sure you fully understand the implications and potential risks involved. If you have any doubts or concerns, it's best to seek advice from a professional or the manufacturer. Additionally, check the terms of your refrigerator's warranty to see what is covered and what repair methods are acceptable under the warranty terms.