Timothy for Model Number PRG304US Thermador 30" Gas Range Natural gas. Problem occurs when using oven. During preheat while trying to get to preset baking temperature stove will begin to make loud puffing sound. Sound is similar to when it first ignites but it is repetitive until it finally reaches temperature. Oven igniter is operating correctly I believe. If we are using the cooktop burners while the oven is making the "puffing" sound the flame will reduce and expand along with the oven. This happens on all four burners. I'm thinking it might be the gas regulator. There have been no changes to the house plumbing
Answer Timothy, This does sound as if you have a pressure regulator issue, and it would need to be replaced. Part# 00754658 Read More... Answered by AppliancePartsPros.com | Monday, April 12, 2021