20 Most Recent Hobart Cn90 Full Size Electric Convection Oven W/ Stand 480v 3 Phase Questions & Answers

Did you ever find a solution? I’m having the same issues with mine

This happened to me:I used a gel rust remover with an electric pad sander (3 times - with a medium course paper the first 2 times, and then a finer course paper the 3rd time). It smoothed and cleaned it up pretty darn good, but there was still a slight red discoloration to the metal. So, we just kind of line the hopper with heavy duty aluminum foil and line over that with 2 clean plastic food grade bags. Also, now as part of maintenance/cleaning after use, we use a little spray rust remover at the beginning of the cleaning process. This should help prevent any more rust and might even help dull that red discoloration after a while.Good luck.

You should be able to purchase a conversion kit from Hobart Direct or a Hobart Agent. The conversion should be done by a Licensed Gas Fitter.

The oven has a 3 try electronic spark control. It sounds like the flame sensor is not sensing the flame correctly and is locking out. I don't know if your model senses flame through the high voltage spark wire or if it has a separate flame sensor wire.

The is something called a duty cycle and if you exceed that rating then you have to wait for it to cool off to use it again.