I've got a Consumer Guarantees Act query slightly different from the normal "My thing broke through no fault of mine. Should it be fixed for free?" one.

My understanding of the CGA is that it also legislates that products sold in New Zealand need to have a decent amount of serviceable parts available. As stated here.

 

Guarantee as to repairs and spare parts

 

(1)Subject to sections 41 and 42, where goods are first supplied to a consumer in New Zealand (whether or not that supply is the first-ever supply of the goods), there is a guarantee that the manufacturer will take reasonable action to ensure that facilities for repair of the goods and supply of parts for the goods are reasonably available for a reasonable period after the goods are so supplied

 

(2)Part 3 gives the consumer a right of redress against the manufacturer where the goods fail to comply with the guarantee in this section.

 

We are in a rental property, and we foolishly placed aluminium foil on the bottom of the oven cavity. An ingrained habit which is no longer acceptable with modern ovens. So we've now decorated the bottom of the oven cavity with baked on aluminium foil. Totally our fault, and we're happy to pay to get it fixed.

We contacted the manufacturer (Westinghouse), and they told us that they don't carry the oven liner as a spare part for that model, so our only course of action is to replace the oven with a new one (RRP $2100). 

I spoke to an authorised Westinghouse appliance repairer, and he told me that if the part is available he could fix it for $400-$600.

In this instance are Westinghouse shirking their responsibilities under the CGA?