Faceplate of stove was changing colour (yellowing) due to excessive heat.
Upon notifying the store, they redirected us to the manufacturer, even though there was an extended warranty and the stove was less than 1 year old. Upon notifying the manufacturer, they took their sweet time in responding. Although they showed up twice to to look at the problem, the part was ordered but never arrived. After a year they told us that the part was discontinued. Eventually they replaced the stove with an equivalent unit.