I videoed my loud whistle/noise, and Stewart at HO reviewed it. They say it is the blades and are sending me a new set. I guess my loud noise did cross the line to an unacceptable level. My consultant and Stewart have been very helpful.
Ok I'm worried now, thermi whistles (grates?) high pitched noise, when heating.Eg. Cooking rice it gets to temp 80+ and whistle begins... I'm wondering if it's a seal issue, hoping it is. It sounds like a metal scraping off balance sound...Emailing consultant now