Received the fan from Sweet Maria’s (sent via USPS 3-Day Priority Mail and arrived days late). It was a quick 20-minute replacement done from the front… didn’t need to pull the front plate.
Since the part was so late arriving I decided try to roast a few batches before the replacement arrived. Couldn’t make it happen. The outside temps have dropped low enough that ErC 6864 is triggered immediately (my issue with the IBTS fan is temperature related). I couldn’t preheat the roaster as the power went to P0 immediately with the error. If I had been able to PreHeat it would have (probably) warmed the fan enough for it to operate at high speed, but outside temps kept that from happening.
Today was colder than yesterday but once the fan was installed I immediately tried set the Bullet to PreHeat. Started preheating immediately- no ErC 6864. I won’t be able to roast for a few days till the weather clears after Thanksgiving, but just being able to go to PreHeat suggests the issue is resolved.
Thank you Aillio and Sweet Maria’s!