Hi,Welcome to Just Answer, My name isXXXXX will be helping you with your appliance issue today.
First I you running low on propane? When the tank it's real low this can happen, second do you have the model number? Is this a drop-in countertop model? If so the model number should be under the cabinet if you open the door on the bottom of the unit, let me know if you can find it, thanks, Bryan