Vulcan oven not heating
I’m working on a Vulcan oven, model VC4ED, for the school district that I work for. I got a call saying the temperature ramped up from 350 degrees to almost 500 degrees and then came back down to about 250 degrees. I suspected it to be the temperature probe or temperature control board, so I changed them both. Well I was wrong because it’s still not working. I checked the high limit switch and it is closed. I changed the contactor for the heating elements, thinking it may have been a bad contactor coil, still not working. Checked input power to temperature control board, I have 208V. Checked output voltage/control voltage at temperature control board, have 208V. I have 208V control going to the fan contactor coil, and it’s pulling in and the fan is running. But I don’t have 208V of control voltage going to the coil on the contactor for the heating element. Any advice is greatly appreciated.
Log in to reply.