Without knowing the model number of your range I will only be able to provide general information and trouble shooting.
The range requires 220-240 volts in order for the surface elements and the bake and broil elements to work. If one of the house circuit breakers dedicated for your range trips, you may see as indicator light come on and the clock may work but the elements will not. I recommend locating the two (2) house circuit breakers dedicated for the range and reset both circuit breakers by flipping them both OFF and ON 2-3 times and then recheck the range operation. If it continues to not heat, the voltage supply must be verified before diagnosing any further. The voltage supply should be checked where it connects to back of the range. The voltage should measure 220-240 volts when checking voltage across the two (2) outside terminals where the power cord is attached. NOTE: I do not recommend checking voltages unless you have experience and feel confident and safe in doing so, otherwise I recommend calling a service technician to diagnose and repair your range.
If you are planning on troubleshooting the range yourself, resubmit your question with the model number and additional details for model specific troubleshooting assistance.