Update: Norcold code “Flame detected where not expected”

Our Northwood TC recently started erroring out on lp mode. When I looked I saw the little blue flame but behind it there was a yellow flame throwing soot. I hope it's the infamous spider web hindering proper combustion. I know they like the water heater orifices I assume fridge no different. Doesn't look like fun to take apart as it's shrouded quite well with sheet metal.