We have a CCOH- 3 oven. When we plug it into the wall, sparks fly and blows breaker. Any suggestions?
Your information is vague. You didn't indicate where you saw sparks flying from. Nonetheless, a simple and common sense approach should steer you in the right direction.
If it's happening at the receptacle...and the condition of the oven's plug is good, try plugging it into a different outlet. If all is well, then call a licensed electrician to repair the receptacle. If sparks STILL fly, then call a service company to repair the oven.
Service | Star Manufacturing
Here's a manual:
STAR/HOLMAN CCOH-3 Installation and Operation Instructions
You never stated the voltage the machine is made for. Before plugging it in make sure that the power switch is off. Inspect the plug blades to insure they are straight and clean. If not it will need replacement. As well as the receptical. Now if you plug it in and it spark's or pops the breaker, You have a short either in the cord or internal of the machine.
Retrieving data ...