Hello runningman0122. My name isXXXXX see that you have been waiting for awhile to get someone to help you. I am not familiar with this equipment but since I have experience in commercial cooking equipment, I thought that it sounds like your unit is cycling on the hi-limit thermostat rather than the regular cycle thermostat. In any case one of your thermostats is bad. I will see if I can find any information on this piece of equipment and will get back to you. Bob
Is the 48905 the only model number for your oven?