but the goods are not faulty, and how often would an oven liner fail?
what's happened is unfortunate but I don't see how it would be a CGA issue
The reason it may be a CGA issue is because of the part of the act I quoted, which stated that spare parts should be available for a reasonable period. This is in direct conflict to what the manufacturer told us.
Consider someone who doesn't have insurance (which luckily we do have). Is it reasonable to expect them to have to pay $2100 to replace an oven, when it could be fixed for $400 - $600 if the part was available? Looking at the construction of the oven, it definitely looks like it was designed to come out. And the manufacturer stated to us that the reason it can't be replaced is because they don't keep that part in stock, not that it is not a serviceable part.